wheat from chaff meta analysis as quantitative literature review abstract this paper presents and develops a quantitative method of literature reviewing and evaluating empirical research meta regression analysis or mra economics is theory driven yet we must learn empirically if economics is to advance mra offers a more objective statistical method to summarize our empirical knowledge and to explain the wide study to study variation in economic research mra is used to assess the evidence for ricardian equivalence and its findings are contrasted to those of conventional narrative review furthermore mra establishes a platform from which to distinguish genuine empirical effect from the exploitable specification error that infests applied econometrics

impacts in uganda of rising global food prices the role of diversified staples and limited price transmission this study assesses the potential impact of rising world food prices on the welfare of ugandan households while uganda experienced sharply higher food prices in 2008 as a landlocked food exporting country the causes of those price changes were mainly regional and indirect rather than directly transmitted from global markets using trade volumes food prices and household survey data we describe how uganda unlike some other countries is partially shielded from direct impacts of global food price movements although the majority of ugandans are net food buyers the adverse impact at household level of rising global prices is moderated by the relatively large quantity and range of staples consumed that come from home production moreover several of these are not widely traded some population groups in uganda are vulnerable to rising food prices however primarily those for whom maize is an important staple including those dependent upon humanitarian relief and the urban poor only a relatively small group of ugandan households will benefit directly and immediately from rising food prices the significant net sellers of food crops constituting between 12 and 27 of the population in this assessment we do not estimate the level and extent of wider second round effects from these higher prices jel classification q18 r22

bid ask spreads volume and volatility evidence from livestock markets using literature based measures and a modified bayesian method specified here we estimate liquidity costs and their determinants for the live cattle and hog futures markets volume and volatility are simultaneously determined and significantly related to the bid ask spread daily volume is negatively related to the spread while volatility and average volume per transaction display positive relationships electronic trading has a significant competitive effect on liquidity costs particularly in the live cattle market results are sensitive to the bid ask spread measure with our modified bayesian method providing estimates most consistent with expectations and the competitive structure in these markets

tradeoffs and complementarities in the adoption of improved seeds fertilizer and natural resource management technologies in kenya there is widespread consensus that agricultural technology has an important role to play for poverty reduction and sustainable development there is no consensus however about the types of technologies that are best suited for smallholder farmers in africa while some consider natural resource management nrm technologies as most appropriate others propagate input intensification with a stronger role of the private sector in the public debate these two strategies are often perceived as incompatible environmental non governmental organizations in particular consider low external input strategies as the only sustainable form of agriculture a view that has considerable influence on policymakers and the international donor community most existing research studies on smallholder innovation focus on the adoption of individual technologies so that comparisons between different types of technologies in the same context are not easily possible we use representative data from maize producing households in kenya and a multivariate probit model to analyze the adoption of different types of technologies simultaneously results indicate that nrm technologies and strategies that build on external inputs are not incompatible interesting complementarities exist which are not yet sufficiently exploited because many organizations promote either one type of technology or the other but rarely a combination of both

is the corn futures market noisier the impact of high frequency quoting the paper pioneers research on high frequency hf quoting noise in electronically traded agricultural futures markets hf quoting quickly cancelling posted limit orders and replacing them with n

one security many markets determining the contributions to price discovery when homogeneous or closely linked securities trade in multiple markets it is often of interest to determine where price discovery the incorporation of new information occurs this article suggests an econometric approach based on an implicit unobservable efficient price common to all markets the information share associated with a particular market is defined as the proportional contribution of that market s innovations to the innovation in the common efficient price applied to quotes for the thirty dow stocks the technique suggests that the preponderance of the price discovery takes place at the new york stock exchange nyse a median 92 7 percent information share although most of the classic paradigms in market microstructure concern a security that trades in a single centralized market such situations are becoming increasingly rare in practice fragmentation the dispersal of trading in a security to multiple sites has emerged as a dominant institutional trend this process is of concern to financial economists and regulators because price information and price discovery the impounding of new information into the security price arguably the most important products of a security market have many attributes of public goods as the process of fragmentation accelerates it may be important to determine where the price information and price discovery are being produced 1 this paper suggests a practical econometric approach to this problem the technique is illustrated with an application to u s equity markets many stocks listed on the new york stock exchange nyse trade concurrently on the regional exchanges and the national association of securities dealers national market system nasd nms since a share of ibm stock is the same security whether purchased on the midwest or pacific exchange this is a particularly clear instance of multiple markets nevertheless the expres

intersectoral transfer growth and inequality in rural ecuador abstract in this paper we study intersectoral transfer and its impact on the distribution of income in ecuador we find that income shares between farm and nonfarm activities are roughly equal on average although the rich in rural areas typically receive a greater share of income from nonfarm sources thus decomposing inequality by income source reveals that a rise in nonfarm incomes increases inequality drawing on a new method to estimate local level distributional outcomes growth of the high productivity nonfarm sector is observed to have a strong and positive association with average consumption and inequality growth of the low productivity nonfarm sector is associated with little change in either average income or income inequality irrespective of subsector growth of the nonfarm sector is associated with a substantial fall in poverty

assets activities and income generation in rural mexico factoring in social and public capital in recent years there has been increasing emphasis in the rural development literature on the multiple income generating activities undertaken by rural households and the importance of assets in determining the capacity to undertake these activities controlling for the endogeneity of activity choice and applying lee s generalisation of amemiya s two step estimator to a simultaneous equation model household returns to assets from multiple activities are explored for the mexico ejido sector to incorporate the multiple variables representing social and public capital into the analysis factor analysis is used the results indicate that the asset position of the household has a significant effect on household participation in income generating activities and returns to those activities furthermore the inclusion of measures of social and public capital into the analysis show that these assets play an important role in income generating activities and that the influence is dependent on the type of social and public capital as well as the particular activity

non agricultural earnings in peri urban areas of tanzania evidence from household survey data abstract this study draws on purposive survey data of approximately 600 households in peri urban tanzania to describe the degree and nature of non farm diversification in these settings with the exception of relatively dynamic cities such as dar es salaam and arusha overall non farm incomes shares are not unambiguously higher than in rural areas as a whole non farm income shares rise sharply and monotonically with quintiles defined in terms of per capita food consumption in that sense the sector appears to offer an important route out of poverty the evidence suggests that education and access to infrastructure are important determinants of non farm incomes in peri urban areas women appear to be poorly placed vis a vis the non farm sector even after controlling for education age and other characteristics kinship and tribal affinities and time devoted to communal activities appear to deter entrepreneurial activity and non farm employment but trust in officials and public servants and strong heterogeneous village associations are important in stimulating non farm activity

household welfare effects of agricultural productivity a multidimensional perspective from ghana abstractalthough poverty reduction policies in developing countries hinge on the link between smallholder productivity and welfare micro level empirical evidence on this is limited in sub saharan africa and neglects the multidimensionality of welfare this article contributes through investigating the productivity poverty relationship using a number of welfare measures with a three period panel dataset for ghana the findings are that welfare is increasing with labour productivity irrespective of the measure used but that dramatic increases in productivity would be required to achieve meaningful poverty reduction

china s electrification and rural labor analysis with fuzzy regression discontinuity abstract this article exploits the exogenous shock of china s rural primary electrification program at the county level to understand how electrification may impact rural arears in terms of labor supply the fuzzy regression discontinuity method is employed to address the endogeneity problem of the electrification assignment and to identify treatment effects the results show that the assignment of the electrification treatment can be efficiently identified by whether the amount of pretreatment electricity consumption level fell below a cutoff value moreover over the program s disbursement period from 1991 to 2000 electrification has had measurable and positive impact on labor supply and electricity consumption of the rural households there is also evidence that electrification has negative effect on the long term employment growth in the rural areas of the recipient counties the article concludes the positive effect of electrification on labor supply is hard to translate into a positive effect on rural employment in the absence of rural enterprises development

a cross country comparison of rural income generating activities summary this paper uses a newly constructed cross country database composed of comparable income aggregates to examine the full range of income generating activities carried out by rural households the analysis paints a clear picture of multiple activities across rural space in countries on all four continents though less so in the included african countries for most countries the largest share of income stems from off farm activities and the largest share of households has diversified sources of income diversification not specialization is the norm nevertheless agricultural sources of income remain critically important for rural livelihoods in all countries

farm productivity and rural poverty in india armed with new data we return to an old question from the pages of this journal to what extent do india s rural poor share in agricultural growth combining data from 24 household sample surveys spanning 35 years with other sources we estimate a model of the joint determination of consumption poverty measures agricultural wages and food prices we find that higher farm productivity brought both absolute and relative gains to poor rural households a large share of the gains was via wages and prices though these effects took time the benefits to the poor were not confined to those near the poverty line

green revolution in sub saharan africa implications of imposed innovation for the wellbeing of rural smallholders green revolution policies are again being pursued to drive agricultural growth and reduce poverty in sub saharan africa however conditions have changed since the well documented successes of the 1960s and 1970s benefitted smallholders in southern asia and beyond we argue that under contemporary constraints the mechanisms for achieving improvements in the lives of smallholder farmers through such policies are unclear and that both policy rationale and means of governing agricultural innovation are crucial for pro poor impacts to critically analyze rwanda s green revolution policies and impacts from a local perspective a mixed methods multidimensional wellbeing approach is applied in rural areas in mountainous western rwanda here malthusian policy framing has been used to justify imposed rather than induced innovation the policies involve a substantial transformation for rural farmers from a traditional polyculture system supporting subsistence and local trade to the adoption of modern seed varieties inputs and credit in order to specialize in marketable crops and achieve increased production and income although policies have been deemed successful in raising yields and conventionally measured poverty rates have fallen over the same period such trends were found to be quite incongruous with local experiences disaggregated results reveal that only a relatively wealthy minority were able to adhere to the enforced modernization and policies appear to be exacerbating landlessness and inequality for poorer rural inhabitants negative impacts were evident for the majority of households as subsistence practices were disrupted poverty exacerbated local systems of knowledge trade and labor were impaired and land tenure security and autonomy were curtailed in order to mitigate the effects we recommend that inventive pro poor forms of tenure and cooperation none of which preclude improvements to input availability market linkages and infrastructure may provide positive outcomes for rural people and importantly in rwanda for those who have become landless in recent years we conclude that policies promoting a green revolution in sub saharan africa should not all be considered to be pro poor or even to be of a similar type but rather should be the subject of rigorous impact assessment such assessment should be based not only on consistent objective indicators but pay attention to localized impacts on land tenure agricultural practices and the wellbeing of socially differentiated people

accumulation of assets in farms covered by the fadn farm accountancy system in poland the economic and eco efficiency context the primary objective of the article is to identify the accumulation processes in farms in poland based on the economic size as well as the context of eco efficiency from the perspective of environmental sustainable value in addition the importance of subsidies in generating accumulation was specified and the context of eco efficiency was taken into account analysis of the environmental context was carried out with the use of the assessment of subsidies for public goods and return to cost ratio rtc based on the concept of sustainable value sv cross analysis has shown that with the transition to groups of farms with an increasing economic size the situation was more favourable from the perspective of the accumulation rate and its level per 1 ha subsidies play a significant role in shaping accumulation it was observed that the higher rate of accumulation associated with the transition to groups of farms with greater economic strength is accompanied by an increase in eco efficiency through the prism of the rtc indicator larger but not the largest farms are more efficient in using the transformation of environmental inputs into production output which does not mean that they exert an absolutely lower environmental pressure

agricultural technology productivity and poverty in madagascar summary this paper uses a unique spatially explicit dataset to study the link between agricultural performance and rural poverty in madagascar we show that controlling for geographical and physical characteristics communes that have higher rates of adoption of improved agricultural technologies and consequently higher crop yields enjoy lower food prices higher real wages for unskilled workers and better welfare indicators the empirical evidence strongly favors support for improved agricultural production as an important part of any strategy to reduce the high poverty and food insecurity rates currently prevalent in rural madagascar

agricultural trade and poverty in chile a spatial analysis of product tradability many questions have arisen about the relationship between international agricultural trade and poverty in developing countries this article explores these questions by analyzing local agricultural tradability indices which measure the degree to which commodities produced in a particular region are traded internationally data are examined for chile a middle income country with a history of international agricultural trade over the last decades empirical results indicate that a higher agricultural tradability index is associated with lower poverty rates across chilean comunas

is land titling in sub saharan africa cost effective is land titling in sub saharan africa cost effective a cost benefit analysis suggests that the current system of formal titling should not be extended in rural madagascar and that any new system of land registration would have to be quite inexpensive to be worthwhile indeed establishing a modern property rights system without legally recognizing informal rights may expand the scope for rent seeking thus creating additional insecurity atwood 1990 purchasing a titled plot without easily being able to update the name on the document exposes the buyer to the risk that a relative of the seller sharing the family name might subsequently claim the plot or challenge the transfer analyses omitted here for brevity indicate that there is no significant advantage to owning titled land in terms of a household s access to formal credit after controlling for the household s landholdings within the mailles such land being much more likely to be titled and titled plots are no more likely to be used as collat

the returns from schooling in a diversified rural economy controlling for the endogeneity of activity choice and considering both household head and family schooling we findevid ence of high returns from schooling in both crop andnoncrop activities as schooling levels increase the returns from schooling shift away from crop production failure to control for activity selection andfamily schooling is likely to result in biasedestimates of the returns from schooling in individual activities copyright 2000 oxford university press

nonfarm income diversification and household livelihood strategies in rural africa concepts dynamics and policy implications abstract asset activity and income diversification lie at the heart of livelihood strategies in rural africa this paper introduces a special issue on the topic income diversification and livelihoods in rural africa cause and consequence of change we concentrate on core conceptual issues that bedevil the literature on rural income diversification and the policy implications of the empirical evidence presented in this special issue

better technology better plots or better farmers identifying changes in productivity and risk among malagasy rice farmers we introduce a method for properly attributing observed productivity and risk changes among new production methods farmers and plots by controlling for farmer and plot heterogeneity results from madagascar show that the new system of rice intensification sri is indeed a superior technology although about half of the observed productivity gains appear due to farmer characteristics rather than sri itself the technology generates the estimated average output gains of more than 84 the increased estimated yield risk associated with sri would nonetheless make it unattractive to many farmers within the standard range of relative risk aversion

an investigation of the spatial determinants of the local prevalence of poverty in rural malawi abstract of malawi s rural population 66 have a level of consumption below the national poverty line we examine the spatial determinants of the prevalence of poverty for small spatially defined populations there a theoretical approach based on the risk chain conceptualization of household economic vulnerability guided selection of a set of potential risks and coping strategies our analytical determinants that could be represented spatially we used these to develop global and local models of poverty prevalence in our global spatial error model only eight of 24 determinants selected for analysis proved significant in contrast all determinants considered were significant in at least some of the local models developed using geographically weighted regression moreover these models provided strong evidence of the spatial non stationarity of the relationship between poverty and its determinants this result implies that poverty reduction efforts in rural malawi should be designed for and targeted at district and subdistrict levels

input subsidy programs in sub saharan africa a synthesis of recent evidence input subsidy programs have once again become a major plank of agricultural development strategies in africa ten african governments spend roughly us 1 billion annually on input subsidy programs isps amounting to 28 6 of their public expenditures on agriculture this article reviews the microlevel evidence on isps undertaken since the mid 2000s we examine the characteristics of subsidy beneficiaries crop response rates to fertilizer application and their influence on the performance of subsidy programs the impacts of subsidy programs on national fertilizer use and the development of commercial input distribution systems and finally the impact of isps on food price levels and poverty rates the weight of the evidence indicates that the costs of the programs generally outweigh their benefits findings from other developing areas with a higher proportion of crop area under irrigation and with lower fertilizer prices factors that should provide higher returns to fertilizer subsidies than in africa indicate that at least a partial reallocation of expenditures from fertilizer subsidies to r d and infrastructure would provide higher returns to agricultural growth and poverty reduction however because isps enable governments to demonstrate tangible support to constituents they are likely to remain on the african landscape for the foreseeable future hence the study identifies ways in which benefits can be enhanced through changes in implementation modalities and complementary investments within a holistic agricultural intensification strategy among the most important of these are efforts to reduce the crowding out of commercial fertilizer distribution systems and programs to improve soil fertility to enable farmers to use fertilizer more efficiently the challenges associated with achieving these gains are likely to be formidable

using evidence of household income diversification to inform study of the rural nonfarm labor market in africa abstract the labor market literature in developing countries has seldom drawn on the studies of rural household income diversification this paper draws on such studies to inform future study of the rural nonfarm labor market in africa the review of evidence provides some surprising departures from traditional images of nonfarm activities of rural households among the most striking is the dominant importance in the majority of case study areas of nonfarm wage labor as compared to self employment of nonfarm sector earnings as compared to farm sector wage earnings and of local nonfarm earnings as compared to migration earnings the most worrying finding was the poor distribution of nonfarm earnings in rural areas despite the importance of these earnings to food security and farm investments this poor distribution implies significant entry barriers and market segmentation it is probable that this will lead over time to an increasingly skewed distribution of land and other assets in rural africa

unpacking the meaning of market access evidence from rural kenya summary this paper critically examines the dimensions of market access using farm panel survey data from kenya we investigate changes in ten indicators of market access during the 1997 2010 post liberalization period we find major improvements in certain market access conditions and little change in others there is generally low correlation between alternative indicators of market access all purpose indicators may not accurately reflect specific market access conditions of interest distances to physical infrastructure are often not representative of farmers access to markets changes in specific market access conditions may have more to do with the behaviors of marketing agents we consider the implications of these findings for agricultural marketing policies and for research methods

rural finance and agricultural technology adoption in ethiopia does the institutional design of lending organizations matter summary it has now become almost a stylized fact that sustained agricultural growth is central to rapid poverty reduction and economic development yet world poverty is largely concentrated in the agrarian societies which have the potential for agricultural productivity growth this is particularly true for sub saharan african countries where the gaps between potential and actual yields remain high minimizing this gap through the promotion of modern inputs such as fertilizer and modern seeds has been at the core of almost all development strategies in ethiopia among other initiatives the country has promoted microfinance institutions and member owned financial cooperatives to alleviate credit constraints of the smallholder farmers this paper analyzes the impacts of these institutions using household survey data and a propensity score matching technique we examine the effects that institutional financial services have on farmers adoption of agricultural technology in ethiopia the results suggest that access to institutional finance has a significant positive impact on both the adoption and extent of technology use however when impacts are disaggregated by type of financial institution and farm size heterogeneities are observed in particular financial cooperatives have a greater impact on technology adoption than microfinance institutions and the results appear to vary depending on farm size and types of inputs the paper concludes with implications for policies to promote adoption of modern agricultural inputs

rural livelihood diversification in sub saharan africa a literature review abstractthis article provides a comprehensive review of the literature on the nature and evolution of rural livelihood diversification in sub saharan africa and the situation regarding smallholders it reveals mixed findings about the causes and consequences of livelihood diversification on rural smallholders adopting this strategy a lot of evidence from the literature suggests that it is relatively better off smallholders with sufficient assets who achieve successful livelihood diversification mainly by exploiting opportunities and synergies between farm and nonfarm activities because of asset constraints increase in incomes and wealth based on livelihood diversification has not yet benefitted the large majority of smallholders

the productivity and income effects of adoption of improved soybean varieties and agronomic practices in malawi abstract soybean constitutes an important component of the maize based smallholder cropping systems in malawi and holds considerable potential for countering soil fertility decline enhancing household food and nutrition security and raising rural incomes a number of yield enhancing improved soybean varieties and agronomic practices isvaps have been developed and disseminated in malawi but there is limited evidence on the adoption and impacts of these technologies this paper assesses the productivity and income effects of adopting isvaps using plot level data collected from a nationally representative sample of 1237 soybean growing households in malawi our results show that over a third of the sampled households have adopted isvaps furthermore results from a stochastic dominance analysis showed that soybean yields and net crop incomes for adopters are significantly higher than those of non adopters over the entire probability distribution of isvaps adoption endogenous switching regression model results further demonstrated that adoption of isvaps is associated with an average of 61 yield gain and 53 income gain for adopters overall the results point to the need for further scaling of isvaps for greater adoption and impact on the livelihoods of smallholder farmers in malawi

policies for agricultural productivity growth and poverty reduction in rural ethiopia summary increasing the productivity of smallholder agriculture holds the key to poverty reduction the empirical literature is limited to ascertain the linkages and the implications for policy uptake in ethiopia we examine the impact of growth in agricultural productivity on household poverty dynamics in rural ethiopia using a panel dataset 1994 2009 findings suggest that government policies aimed at reducing poverty should adopt a growth plus approach designing policy interventions to support agricultural productivity growth plus to protect assets and enhance market access for rural households in the country

the determinants of nonfarm activities and incomes of rural households in mexico with emphasis on education abstract this paper presents the main results of a study of the effects of education as well as other household assets on the choice of activities and incomes of rural mexican households our study examines the various income sources as well as the education of the household s head and its members implications are drawn for rural education and development policies to promote rural nonfarm incomes and employment

rural nonfarm incomes in nicaragua abstract this paper examines nonfarm incomes of rural nicaraguan households using a nationwide survey lsms from 1998 the key findings are as follows a rural nonfarm income rnfi constitutes 41 of rural household incomes b rnfi is much more important than farm wage labor income c rnfi tends to be relatively concentrated geographically and socioeconomically toward the rural areas of the managua zone and the rest of pacific zone which are denser in infrastructure and population and toward the upper income quartile of rural households this concentration implies high entry barriers and capital requirements for rural nonfarm activity that the poor are simply not equipped to overcome equipping the rural poor through training and acquisition of diverse forms of capital to have a chance at the higher return nonfarm jobs would be a major step toward helping them to share the benefits of the rural nonfarm economy d self employment small enterprise income in manufactures is very minor probably due to the ease of obtaining manufactured goods from urban industries and imports wage employment constitutes the bulk of rnfi despite it receiving little attention in development programs and debate e three quarters of rnfi is in the service sector and only one quarter is from manufactures that can be contrasted with the emphasis on small manufactures enterprises in rural development programs and research f education road access as well as access to electricity and water were found to be important to nonfarm incomes

high frequency quoting short term volatility in bids and offers at subsecond horizons bids and offers in u s equity markets are more volatile than what would be implied by long term fundamentals to assess costs and consequences this paper suggests that traders random delays latencies interact with quote volatility to generate execution price risk and relative latency costs analysis of the behavior of quote setters suggests that this volatility is more likely to arise from recurrent cycles of undercutting similar to the edgeworth cycles found in product markets rather than mixed strategies of limit order placement

on the malthusian theory of long swings in the essay on population economic growth consists of alternating surges of population during which real wages fall and the rate of profit rises and capital during which the reverse occurs a series of temporary equilibria exists at which wages are maximal the rate of profit minimal and fully employed work force in technically determined relation to fixed capital stock between these equilibria occur episodes of excess labour below maximum wages above minimum profit rate and capital accumulation malthus s ratios presuppose a logarithmic production function that implies first that the full employment real wage will fall to subsistence secondly that the full employment wages fund is constant summary in fre

informing food security decisions in africa empirical analysis and policy dialogue discussions of economic and agricultural development in africa have focused heavily in recent years on structural adjustment i e basic policy changes aimed at allowing international and domestic markets to play a greater role in coordinating national economic activities often these structural adjustments and accompanying policies aimed at improving economic performance have been based on several implicit assumptions about how african food systems operate yet for many countries little empirical information has been available to test these assumptions hence designing policies too often becomes an exercise in planning without facts this paper argues that not only is there a need to base food security and structural adjustment policies more firmly on empirical information but that the process by which the information is obtained is as important as the information itself agricultural economists and other social scientists can and increasingly should design policy research in africa in ways that simultaneously increase effective demand for empirical information as an input into the ongoing policy process and augment african capacity continually to inform policy deliberations we illustrate the payoffs to such an approach by drawing on selected experience in several african countries weber

world poverty and the role of agricultural technology direct and indirect effects agricultural technology can help reduce poverty through direct and indirect effects direct effects are gains for the adopters while indirect effects are gains derived from adoption by others leading to lower food prices employment creation and growth linkage effects conceptualising and measuring these effects is highly complex yet is needed for each region if technology is to be used as an effective instrument for poverty reduction we propose a methodology for doing this in the context of computable general equilibrium modelling and apply it to archetype models for africa asia and latin america results show that the dominant effect of technology on poverty is through direct effects in africa indirect agricultural employment effects in asia and linkage effects through the rest of the economy in latin america in each case increasing the poverty reduction effect through the targeting of technology across crops and through complementary rural development programmes is also explored

algorithmic quoting trading and market quality in agricultural commodity futures markets this paper investigates the effect of algorithmic trading activity as measured by quoting on the corn soybean and live cattle commodity futures market quality using the cme s limit order book

the role of agriculture in economic development visible and invisible surplus transfers the financial surplus of agriculture has been central to theories of the role of agriculture in economic development morrisson and thorbecke mt have used a constant price social accounting matrix sam framework to measure rigorously the financial surplus of agriculture and decompose the mechanisms of surplus extraction history and theory have however stressed the role of prices as an invisible transfer mechanism in addition to the visible transfers identified in the sam framework we extend the mt approach by defining and measuring the real surplus of agriculture and decomposing the mechanisms of surplus extraction between visible and invisible financial transfers using an archetype computable general equilibrium model for poor african nations we trace the generation transfer and use of an agricultural surplus created by a productivity gain in agriculture this shows that prices indeed play an overwhelmingly important role in transferring a surplus from agriculture to the benefit of the rest of

contract farming smallholders and rural development in latin america the organization of agroprocessing firms and the scale of outgrower production abstract this paper demonstrates how contract farming functions as an economic institution and explores the causes of the observed variation in the scale of outgrower production in latin america we outline how market imperfections and transaction costs influence the decision of agroprocessing firms to contract out vertically integrate or use spot markets to obtain raw product the paper demonstrates how market conditions are likely to be associated with particular outgrower characteristics under contract farming an analysis of the mexican frozen vegetable industry illustrates determinants of successful and unsuccessful small scale contracting and suggests alternative policies to promote contract farming with smallholders

determinants and consequences of internal return migration in thailand and vietnam summary this paper draws a distinction between local return migrants who move back to their home village and regional return migrants who return to other places within their home provinces in thailand and vietnam using multinomial regressions we firstly analyze determinants of internal return migration and find that while local return migrants are lower educated than continuing migrants this negative human capital selection cannot be found for regional return migrants secondly after returning local return migrants often engage in agriculture while regional return migrants continue in nonfarm employment thereby diversifying the household income and consequently bringing potential for future economic development

what are the farm level impacts of malawi s farm input subsidy program a critical review this article provides a critical analysis of the current frontier of research evaluating malawi s farm input subsidy program fisp whose main objectives are increasing maize production promoting household food security and enhancing rural incomes we focus on farm level studies in malawi identifying consistent and contrasting research results in order to draw important policy lessons and provide suggested avenues for future research while national production estimates suggested dramatic increases in maize production and productivity during the years of the fisp the farm level studies found relatively modest increases in maize production and yields over the same period consistent with the farm level results of modest maize production increases there has been a relative increase in real maize prices and the country continued to import maize during most of the subsidy program years furthermore there is evidence that better off households gained substantially more than poorer households when they participated in the program together these findings cast some doubt on the fisp s ability to reduce food insecurity and poverty we propose a number of policy lessons and suggestions for rigorous investigation including research that directly measures the causal impacts of the fisp program on poverty in malawi

do land markets improve land use efficiency evidence from jiangsu china inefficient use of scarce and fragmented land challenges the sustainability of agriculture land markets may improve land use efficiency in recent years china has employed various instruments to

is land titling in sub saharan africa cost effective evidence from madagascar formalizing land rights has been promoted as a way to encourage agricultural investment and stimulate land markets yet little is known about the benefits of such policies in sub saharan africa where the preconditions for success are less favorable the analysis uses a large sample of plots from an intensively titled rice growing area of madagascar and compares land specific investments land productivity and land values for titled and untitled plots cultivated by the same household having a title has no significant effect on plot specific investment and correspondingly little effect on land productivity and land values these results are broadly consistent with a simulation of a theoretical model of investment under expropriation risk calibrated to the same data a cost benefit analysis suggests that the current system of formal titling should not be extended in rural madagascar and that any new system of land registration will have to be quite inexpensive to be worthwhile

gender assets and agricultural development lessons from eight projects ownership of assets is important for poverty reduction and women s control of assets is associated with positive development outcomes at the household and individual levels this research was undertaken to provide guidance for agricultural development programs on how to incorporate gender and assets in the design implementation and evaluation of interventions this paper synthesizes the findings of eight mixed method evaluations of the impacts of agricultural development projects on individual and household assets in seven countries in africa and south asia the results show that assets both affect and are affected by projects indicating that it is both feasible and important to consider assets in the design implementation and evaluation of projects all projects were associated with increases in asset levels and other benefits at the household level however only four projects documented significant positive impacts on women s ownership or control of some types of assets relative to a control group and of those only one project provided evidence of a reduction in the gender asset gap the quantitative and qualitative findings suggest ways that greater attention to gender and assets by researchers and development implementers could improve outcomes for women in future projects

malthus on long swings the general case 3 major assumptions provided the basis to malthus theory of population food is necessary to human existence passion between man and woman is necessary and will continue nearly in its present state and the power of population is indefinitely greater than the earths power to produce subsistence for humans with this as his base malthus proposed the thesis that strong and constant forces need to hold the superior power of population over subsistence in check the forces include both positive checks e g infant mortality and preventive checks e g foregoing early marriage malthus evidently had a theory of long swings in mind because he began his essay questioning whether humankind will experience unlimited improvement or a state oscillating between happiness and misery waterman 1987 offers a new interpretation of malthus theory of long swings concluding that the malthusian theory of oscillations as sketched in the essay on population may justly be represented by a zig zag path of real wages 2 questions arise does the text literally mean what waterman suggests and is the text consistent with malthus general position the quotation offered by wasserman focuses on a special case that illustrates how oscillations might take place but fails to represent malthus general position in any society the populations response to wages determines the level of subsistence due to the different living habits in each state the subsistence level varies from state to state and malthus devotes much of the 1st essay to discussing what determines the living habits and the subsistence level in different countries in malthus theory of long swings real wages do not follow a zig zag path this is due to the fact that neither the accumulation of capital nor the growth of population behaves as he proposes whenever the rate of profit is sufficiently attractive capital accumulates and the response of population to a change in wages depends on a complex of forces termed by malthus as positive and preventive checks generally the path of wages over time is dependent on the prevailing conditions at a particular time and place excerpt

land inheritance and market transactions in uganda studies on the role of nonmarket land transactions remain limited this paper addresses two questions is land inheritance driven by underdeveloped land markets how does land inheritance influence land disposal and acquisition we use a switching regression model on household data from rural uganda we find that the initially landless or near landless households due to little or no land inheritance obtain land through land markets while those that are land rich dispose of land through land sales and bequests the results suggest that a process of land equalization is unfolding within the sample

isolation and agricultural productivity this article examines the mechanisms that transmit isolation into productivity in particular we study the effect of isolation and transport infrastructure on welfare and agricultural productivity in the case of madagascar madagascar is a good case study given the bad shape of its infrastructure and therefore the significant variation in isolation based on comprehensive household survey data combined with a census of communes we discover a strong poverty isolation relationship further we find the inverse relationship between agricultural productivity and isolation to be surprisingly strong we isolate the following reasons why productivity might decline with isolation i transportation induced transaction costs ii the inverse relationship between plot size and productivity iii increasing price variability and extensification onto less fertile land and iv insecurity

nonfarm employment and poverty alleviation of rural farm households in honduras abstract this paper analyzes the role of nonfarm income of rural farm households in honduras it uses the national income and expenditure survey from 1993 to 1994 income from nonfarm wage and self employment represents 16 25 of farm household income and is especially important for middle and higher income strata nonfarm wage labor is geographically concentrated in small rural towns and in the industrial free zones located in the northern region while self employment is particularly developed in the southern region access to nonfarm wage employment is confined to educated individuals that belong to large households while female members of wealthier households are mainly involved in self employment food security is strongly enhanced through the engagement in nonfarm activities moreover nonfarm income enables farmers to purchase external inputs for improving yields and labor productivity suitable policies to enhance nonfarm employment include education training and technical assistance to reduce labor intensity in agricultural production as well as public investment and credit services to improve access to nonfarm activities

why has economic growth been more pro poor in some states of india than others abstract we use 20 household surveys for india s 15 major states spanning 1960 1994 to study how the sectoral composition of economic growth and initial conditions interact to influence how much growth reduced consumption poverty the elasticities of measured poverty to farm yields and development spending did not differ significantly across states but the elasticities of poverty to urban and rural non farm output varied appreciably and the differences were quantitatively important to the overall rate of poverty reduction states with higher elasticities did not experience higher rates of non farm growth the non farm growth process was more pro poor in states with initially higher literacy higher farm productivity higher rural living standards relative to urban areas lower landlessness and lower infant mortality

assessing food insecurity in latin america and the caribbean using fao s food insecurity experience scale abstract the complexity of the operational concept and definition of food insecurity has complicated the study of the food insecure and efforts to determine clear policy directions previous findings on the prevalence and severity of food insecurity are inconsistent and often depend on the measure used to overcome limitations in food security measurement the food and agriculture organization of the united nations developed the food insecurity experience scale which is the first survey protocol to measure people s direct experience of food insecurity on a global scale using this new measure our study contributes to the understanding of the food insecure by examining the determinants of food insecurity within and across countries in latin america and the caribbean lac using a series of multilevel linear models we find the three determinants associated with the largest increase in the likelihood of experiencing food insecurity in lac are low levels of education limited social capital and living in a country with low gdp per capita results suggest the need to promote education of the most vulnerable encourage social interactions that help build individuals social capital and adopt gender sensitive programs the results also suggest the need for a shift in policy from short term strategies to long term efforts that sustain household productive capacity and employment to promote sustained economic growth

the role of landholding as a determinant of food and nutrition insecurity in rural myanmar summary recent research has emphasized the role of land tenure in influencing rural food and nutrition insecurity in developing countries we use data from rural myanmar to empirically analyze the links between land holdings and household level food and nutrition security our analysis focuses on the following issues i what are the socio economic characteristics of food insecure households ii what are the main coping strategies adopted by vulnerable households to address their food security and iii are our findings robust across the different food security measures our results show landholding to be a strong predictor of household food and nutrition security

the gender gap in agricultural productivity the role of market imperfections abstractthis paper hypothesises that labour and credit market imperfections by discouraging off farm income generating activities and restricting access to inputs respectively affect female farm productivity more deeply than male productivity the paper develops a theoretical model which decomposes the contribution of various market imperfections to the gender productivity gap empirically we show that agricultural labour productivity is on average 44 per cent lower on female headed plots than on those managed by male heads 34 per cent of this gap is explained by differences in labour market access and 29 per cent by differences in credit access

nonfarm income inequality and land in rural egypt this article proposes to clarify the impact of nonfarm income and unequal land distribution on rural income inequality by analyzing the results of a new nationally representative household survey in egypt the article seeks to make three contributions first it uses standard decomposition techniques based on the gini coefficient to pinpoint the contribution of five different sources of rural income including nonfarm income to overall rural inequality this is useful because of few past studies have used disaggregated household level income data to analyze the contribution of nonfarm income to overall rural inequality second the analysis applies a new income decomposition procedure based on regression analysis this procedure proposed by j morduch and t sicular provides a flexible and efficient way for quantifying the role of various household level variables in determining the level of income inequality third the study uses the new income decomposition procedure to identify the contribution of one specific variable land ownership to various sources of income inequality this analysis finds that land ownership which is distributed very unevenly in rural egypt is negatively and significantly related to the determination of nonfarm income however land ownership is positively and significantly related to the determination of agricultural income excerpt

are african households not leaving agriculture patterns of households income sources in rural sub saharan africa this paper uses comparable income aggregates from 41 national household surveys from 22 countries to explore the patterns of income generation among rural households in sub saharan africa and to compare household income strategies in sub saharan africa with those in other regions the paper seeks to understand how geography drives these strategies focusing on the role of agricultural potential and distance to urban areas specialization in on farm activities continues to be the norm in rural africa practiced by 52 percent of households as opposed to 21 percent of households in other regions regardless of distance and integration in the urban context when agro climatic conditions are favorable farming remains the occupation of choice for most households in the african countries for which the study has geographically explicit information however the paper finds no evidence that african households are on a different trajectory than households in other regions in terms of transitioning to non agricultural based income strategies

spatial integration at multiple scales rice markets in madagascar the dramatic increase in the price of rice and other commodities over the past year has generated new interest in how these markets work and how they can be improved this article uses an exceptionally rich data set to test the extent to which markets in madagascar are integrated across space at different scales of analysis and to explain some of the factors that limit spatial arbitrage and price equalization within a single country we use rice price data across four quarters of 2000 2001 along with data on transportation costs and infrastructure availability for nearly 1 400 communes in madagascar to examine the extent of market integration at three different spatial scales subregional regional and national and to determine whether non integration is due to high transfer costs or lack of competition the results indicate that markets are fairly well integrated at the subregional level and that factors such as high crime rates remoteness and lack of information are among the factors limiting competition

assessing environmental dependence using asset and income measures evidence from nepal understanding rural environmental dependence in a rural population is an important factor in the framing of environmental policy with the dual aim of tackling poverty and conserving nature firstly this study compares the assessment of environmental dependence between poverty groupings based on income and asset measures using a composite asset index we were able to distinguish the asset poor from the asset non poor we then combined income data with the asset index enabling us to disentangle the stochastic and structural nature of poverty the distribution of poor and non poor households based on income measures was significantly different from that based on asset measures the income poor are substantially more dependent on environmental resources than the income non poor about 15 difference while strikingly minimal difference was observed in environmental dependence between the asset poor and non poor less than 2 difference the level of environmental dependence between the poor and non poor households differs with the choice of welfare measure and combining two of these measures to identify wealth groups provides policy makers with better insight on the variations in environmental dependence

post green revolution food systems and the triple burden of malnutrition developing country food systems have changed dramatically since the green revolution period at the same time malnutrition still represents a challenge and is now understood to encompass the three simultaneous dimensions of undernourishment micronutrient deficiencies and over nutrition manifest in overweight and obesity these changes in food systems and in the understanding of the global malnutrition challenge necessitate fresh thinking about food systems based strategies to reduce malnutrition this paper introduces a special section that offers such new perspectives we discuss trends with respect to indicators of the triple burden of malnutrition to understand the extent of global malnutrition challenges and then relate those to food systems transformation in developing countries

short and long run determinants of commodity price volatility to explain price volatility in the u s agricultural energy and metal futures markets we estimate a model of common and commodity specific high and low frequency factors by building on the spline garch model of engle and rangel 2008 a better model fit results from allowing the unconditional variance to slowly change over time moreover the persistence of volatility shocks is shown to be much weaker than what standard garch models imply combining the volatility results with monthly macroeconomic indicator data we find that decomposing realized volatility into high and low frequency components better reveals the impact of slowly evolving aggregate variables on price volatility moreover over the period 1990 2005 most of the macroeconomic variables had similar effects within the same commodity category e g grain but their effects differed across commodity groups e g grain versus livestock over the period 2006 2009 however commodity specific factors dominated common factors copyright 2013 oxford university press

yield gap based poverty gaps in rural sub saharan africa summary given africa s challenge of feeding a growing population narrowing yield gaps is an efficient way of raising production under covariate constraints using household panel data from 21 regions in eight sub saharan african countries this article unravels the determinants of yield gaps it also tests the hypothesis that poverty gaps are increasing with yield gaps the results suggest that yield gaps are increasing with cultivated area that yield differences are reducing with fertilizer use particularly when combined with improved seeds in low production potential regions that poverty gaps are increasing with yield gaps particularly in low production potential regions

the canonical classical model of political economy adam smith david ricardo thomas robert malthus and john stuart mill shared in common essentially one dynamic model of equilibrium growth and distribution when the limitation of land and natural resources is added to the model of karl marx he also ends up with this same canonical classical model in its present version the model is stripped down to its minimal essentials for brevity i employ modern mathematical tools but only to characterize in modern terms the relations that were actually common to all these writers the reader should of course be warned that any simple codification of the classical economists discursive writings must be an oversimplification in some of their passages they qualify what they have written elsewhere in some they provide negations and contradictions not a few of the stereotypes about the classical writers are to paraphrase voltaire myths agreedupon by later commentators distortions that both improve and libel the originals the relevant object of study for a modern scholar is the corpus of original texts and the commentaries on them the latter not being genuinely of less interest than the former once we have succeeded in telling them apart to the fascinating question of whether classical political economy does or can be made to offer an alternative paradigm in the sense of thomas kuhn 11 1962 to modern mainstream economics the present investigation provides an instructive answer so to speak within every classical economist there is to be discerned a modern economist trying to be born a ricardo or mill did not so much replace supply and demand by quite different mechanisms but rather sought to be able to say something significant and limiting about their properties quite in the same way that we moderns endeavor to do i describe and analyze here the basic classical model in its essential form

a century long perspective on agricultural development this article strategically surveys the past century s literature on agricultural development we organize the discussion around three grand themes that reveal the richness of agricultural development as an intellectual endeavor first we explore the role of agriculture in the broader development process from a macroeconomic and political economy perspective we then examine the role of technological and institutional change in successful agricultural development finally the focus turns to a microeconomic perspective on agricultural household decision making and the problems of imperfect and missing markets asymmetric information and transactions costs that lead to widespread apparent inefficiency and disequilibrium

urban agriculture poverty and food security empirical evidence from a sample of developing countries urban agriculture may have a role to play in addressing urban food insecurity problems which are bound to become increasingly important with the secular trend towards the urbanization of poverty and of pop ulation in developing regions our understanding of the importance nature and food security implica tions of urban agriculture is however plagued by a lack of good quality reliable data while studies based on survey data do exist for several major cities much of the evidence is still qualitative if not anec dotal using a recently created dataset bringing together comparable nationally representative house hold survey data for 15 developing or transition countries this paper analyzes in a comparative international perspective the importance of urban agriculture for the urban poor and food insecure some clear hints do come from our analysis on the one hand the potential for urban agriculture to play a sub stantial role in urban poverty and food insecurity reduction should not be overemphasised as its share in income and overall agricultural production is often quite limited on the other hand though its role should also not be too easily dismissed particularly in much of africa and in all those countries in which agriculture provides a substantial share of income for the urban poor and for those groups of households to which it constitutes an important source of livelihoods we also find fairly consistent evidence of a positive statistical association between engagement in urban agriculture and dietary adequacy indicators

farmers welfare and changing food prices nonparametric evidence from rice in madagascar this paper uses nonparametric density estimation and kernel smoothing techniques to examine the instantaneous distributional implications of rice price changes in madagascar while many farmers do not participate in product markets as either buyers or sellers and net sales or marketable surplus are fairly small for many others the roughly one third of rice farmers who fall below the poverty line face significant negative first order welfare effects from increases in the mean or variance of rice prices conversely the first order gains from rice price increases are highly concentrated among the largest rice farmers and particular regions in madagascar

why have some indian states done better than others at reducing rural poverty the unevenness of the rise in rural living standards in the various states of india since the 1950s allowed the authors to study the causes of poverty they modeled the evolution of average consumption and various poverty measures using pooled state level data for 1957 91 they found that poverty was reduced by higher agricultural yields above trend growth in nonfarm output and lower inflation rates but these factors only partly explain relative success and failure in reducing poverty initial conditions also mattered states that started the period with better infrastructure and human resources with more intense irrigation greater literacy and lower infant mortality rates had significantly greater long term rates of consumption growth and poverty reduction by and large the same variables that promoted growth in average consumption also helped reduce poverty the effects on poverty measures were partly redistributive in nature after controlling for inflation the authors found that some of the factors that helped reduce absolute poverty also improved distribution and none of the factors that reduced absolute poverty had adverse impacts on distribution in other words there was no sign of tradeoffs between growth and pro poor distribution

agricultural productivity growth rural economic diversity and economic reforms india 1970 2000 a salient theme in d gale johnson s work is the importance of agricultural development for general prosperity and for economic diversification e g johnson 2000 johnson has also noted that most of the world s poor are engaged in farming so that a key focus of development policy is to raise the incomes of farmers from a global perspective increasing the productivity of agriculture given the fixity of land is necessary for both poverty reduction and the development of the nonagricultural sector at the level of the world agricultural productivity gains poverty reduction and the growth of the nonfarm sector are complements however the question remains whether these observations imply that every poor country should focus its public resources on agricultural development in order to raise the incomes of people now engaged in farming and whether such a policy is necessary for obtaining economic diversity in this article we use the experience of india over the past 30 years to address the issue of whether agricultural technical change actually leads to economic diversification and income growth within the rural sector in the context of an open economy country in which there are cross area trade and capital flows we focus in particular on the rural sector because this is the sector in which linkages between agricultural and nonagricultural sectors are thought to be the strongest we exploit the fact that india has maintained a policy of openness with respect to agricultural technology over this period permitting and actively supporting agricultural development and has moved to a reformed regime in which goods are traded and capital is more mobile in the 1990s evidence on the relationship between agricultural growth and nonfarm

rural nonfarm employment and incomes in chile abstract this article analyzes the evolution of rural nonfarm employment rnfe and income in chile during 1990 96 the data used come from the national socioeconomic survey casen and from a household survey undertaken by the authors in two municipalities in 1999 the latter contrasted two zones very different in terms of economic dynamism and rural poverty we show that during the period rnfe and incomes increased 10 and 18 respectively in 1996 reaching 39 of rural employment and 41 of rural incomes the rate of multiactivity the share of households participating in more than one sector was only 20 lower than expected indicating a tendency toward economic specialization in rural income strategies the determinants of such employment are mainly household characteristics in particular variables related to human capital such as the age and gender of the household head and the schooling of the household members although also important are access to credit and physical capital the level of nonfarm income of rural households is determined mainly by the economic context in particular the economic level and dynamism of the overall zone and the quality of the roads it is proposed that policies to develop rnfe should be geared to zone characteristics and should in general favor investments in education in roads and in access to credit moreover households headed by women should be the object of special attention to promote such policies it will be necessary to address important gaps and weaknesses in the public institutional structure

who benefits from energy policy incentives the case of jatropha adoption by smallholders in mexico understanding the distribution of policy incentives is important in evaluating the impact of promotion programmes this study investigates the allocation of economic subsidies to jatropha cultivation by using adoption models at both the community and household levels in chiapas at the community level we compared socioeconomic and environmental variables of the communities that adopted jatropha to non adopters at the household level 420 farm households were surveyed to analyse both the determinants of adoption and the extent of adoption i e hectares dedicated to jatropha the variables determining adoption were analysed at both levels using generalised linear models the extent of jatropha adoption was assessed using ordinary least squares multiple regression quantitative data was complemented with key stakeholder interviews and focus groups results show that subsidies tend to be allocated to larger better connected communities which have access to better services within adopter communities the subsidy is distributed among households that have more resources better risk coping strategies better access to information more experience with similar technologies and whose attitude towards risk is positive this study provides lessons that can be useful for the introduction of new energy crops to better reach the target group and ultimately achieve the aims of energy promotion strategies

rural nonfarm activities and poverty in the brazilian northeast abstract this paper combines two complementary data sets to present a disaggregated spatial profile of poverty in the brazilian northeast and to investigate the importance of nonagricultural activities for its rural dwellers we present both univariate and multivariate profiles of nonagricultural employment and discuss its determinants while the main occupational difference between the rural poor and the rural nonpoor in brazil seems to be the greater reliance of the former on paid agricultural employment vis a vis own cultivation rather than access to nonagricultural activities the evidence nevertheless suggests that diversification into this growing sector provides both an important complement to the budgets of the poor and possibly a self insurance mechanism against negative shocks despite the substantial heterogeneity of the sector two general findings are robust returns to education are comparatively high and location in relation to urban areas is an important determinant of both employment and earnings in rural nonagricultural activities

economic development and the role of agricultural technology in earlier debates on economic development the agricultural sector s role was somewhat controversial while dualistic models highlighted the importance of agriculture the mainstream literature placed a greater emphasis on the creation of a modern industrial sector soon agriculture disappeared from the mainstream development literature to re emerge recently with a variety of multiple sector growth models emphasizing the key role of agriculture and specifically technology in agriculture this article is an empirical cross country analysis of agricultural technology s role in economic development specifically the hypothesis being tested is whether improvements in agricultural technology have a significant impact on long run economic growth the results indicate that agricultural modernization has a positive effect on both measures of economic growth and human development

off farm labor market decisions and agricultural shocks among rural households in kenya using household level data from rural kenya this article explores whether and how farm households respond to unfavorable agricultural production environments including any ex post adjustments in off farm labor supply in response to unexpected weather shocks while controlling for a wide range of educational demographic and other locational factors we examine how long term weather conditions and specific rainfall shocks influence a household s decision to engage in and their earnings from the off farm labor market we find that rural households engage in off farm work as a long term strategy to deal with the effects of anticipated weather conditions on their farming operations the analysis does not reveal major short term adjustments in off farm engagement as a result of specific unexpected rainfall shocks these households do however rely on remittance income and petty agricultural wage labor under these circumstances holding other factors constant and conditional on participation households in areas with a more productive local agriculture tend to earn more from off farm work especially in the informal business sector than their counterparts in regions with a less productive agriculture as expected a vibrant local economy in the form of public investment increases the probability of off farm participation

a selectivity model of household food marketing behavior in sub saharan africa the agricultural household s discrete decision of whether to participate in coarse grain markets is separated here from the continuous decision of how much to sell or buy conditional on participation failure to participate in markets results from high fixed transactions costs a selectivity model endogenously switches households into alternative market participation states correcting for bias caused by the exclusion of unobservable variables affecting both discrete and continuous decisions improved market information increases the probability of participation by sellers while access to cereals processing technology increases quantities transacted by both sellers and buyers conditional on participation

agricultural growth and poverty in an archetypical middle income country chile 1987 2003 is a reduced share of agriculture in the economy an obstacle for the agricultural sector to play an important role in poverty alleviation what is the key channel if any by which agriculture is benefiting the poor in chile that would be worthwhile to promote in other countries by answering these questions we expand the literature on poverty and composition of growth by proposing a methodology that allows to disentangle the mechanisms by which agricultural growth can be poverty reducing we find that in chile agriculture plays a large role in reducing poverty and most of this effect is channeled through the labor market

hicks and hollander on ricardo a mathematical note the model of ricardo s economy that john hicks and samuel hollander 1977 explored in this journal laid to rest the notion that ricardian models can be adequately constructed with the wage assumed to be at subsistence the model in that paper dealt for the most part with an economy possessed of circulating capital only 1 it examined the behavior of the wage and labor force as the economy approaches the stationary state in the course of their investigation hicks and hollander encountered the possibility that the wage and labor force might not approach stationary state levels in a smooth way but might instead oscillate the wage passing sometimes below subsistence sometimes above it the labor force increasing and decreasing such behavior which ricardo mentioned only briefly 2 they named the exception hicks and hollander 1977 p 358 when such a possibility arises it is natural enough to investigate the conditions that give rise to it hicks and hollander did so and concluded that the approach to stationary state equilibrium will be smooth provided only that the elasticity of the marginal product curve must be greater than 1 hicks and hollander 1977 p 356 this note reexamines the model formally 3 on the basis of pasinetti s 1960 article it shows that the hicks hollander condition for nonoscillatory behavior is sufficient but not necessary

are workers close to cities paid higher nonagricultural wages in rural china in the present study we investigate whether workers close to cities are paid higher non agricultural wages than workers in outlying rural areas we find that workers close to urban areas not only benefit from more opportunities to engage in non agricultural activities but also from better paid jobs in addition distance exhibits a strongly nonlinear impact distance always has a negative impact on wages but the effect is more detrimental the closer the village is to the urban center we also find evidence of urban hierarchy effects workers living close to bigger cities are paid higher wages finally we provide evidence on the transmission channels at work

what s so spatial about diversification in nigeria summary many households in developing countries allocate their productive assets among various income generating activities in order to develop a portfolio of income from occupations with different degrees of risk expected returns and seasonal and liquidity constraints the push and pull factors influencing diversification decisions of households are widely discussed in the literature however no study to date has taken into account spatial interdependence of household decisions in spite of various channels of neighborhood effects such as information flow learning from others social networks and agglomeration economies this paper fills in the gap by incorporating spatial dependence in the choice model of diversification using a spatial auto regressive probit model and an advanced bayesian strategy to its estimation empirical analysis is run taking advantage of the nigerian general household survey panel 2010 11 providing gis coordinates for the surveyed households the results imply endogeneity of the neighbors decisions to allocate their productive assets among various occupations and signal the importance of social learning and agglomeration effects favoring the spillover of diversification activities through neighbors networks and local markets the households decisions respond to local environment factors such as weather shocks or infrastructural constraints as shown by the regional differences taking into account spatial interdependence is particularly important in the event of a wide divide of the data available into different zones as for example in case of the nigerian northern region where the states are larger

assets activities and rural income generation evidence from a multicountry analysis summary this paper examines the links between the assets and the economic activities of rural households in developing countries to provide insight into how the promotion of certain key assets particularly education land and infrastructure influences the economic choices of these households nationally representative data from 15 countries which form part of the rural income generating activities riga database are used in the analysis the results indicate that improved land access is linked to agricultural production and thus will lead households to take on average this path for improving household welfare higher levels of education and greater access to infrastructure appear to be most closely linked to non agricultural wage employment