the private and social costs of planning delay this paper examines planning delay and identifies the difficulty in establishing an appropriate definition and measure of delay it then outlines an economic framework for the analysis of delay costs distinguishing between private costs and the various elements of social cost it shows that the costs of delay are contingent upon the restrictiveness of planning and should be assessed in relation to the benefits of planning control available estimates of delay cost are identified but are shown to be deficient even as measures of the private cost of delay various suggestions are made for the improvement of existing approaches but it is concluded that the assessment of private and social delay costs requires case study research which distinguishes between property sectors locations and different points in the cycle of property development

planning delay and the responsiveness of english housing supply there is growing international interest in the impact of regulatory controls on the supply of housing most research focuses on the supply impacts of prescribed limits on land use but housing supply may also be affected by the process of planning monitoring and approval but this is hard to measure in detail the uk has a particularly restrictive planning regime and a detailed and uncertain process of development control linked to it but does offer the opportunity of detailed site based investigation of planning delay this paper presents the findings of empirical research on the time taken to gain planning permission for selected recent major housing projects in southern england the scale of delay found was far greater than is indicated by average official data measuring the extent to which local authorities meet planning delay targets hedonic modelling indicated that there is considerable variation in the time it takes local authorities to process planning applications housing association developments are processed more quickly than those of large developers and small sites appear to be particularly time intensive these results suggest that delays in development control may be a significant contributory factor to the low responsiveness of uk housing supply to upturns in market activity

mathematical vindication of ricardo on machinery ricardo is shown to be right that machinery can hurt wages and reduce output a dramatic robot example reveals wicksell s error in believing that pareto optimality calls for no drop in total output from a viable invention under ricardo s axiom that labor supply adjusts to keep wages at the subsistence level he can correctly deduce on a market clearing basis a rise in his net product rent plus interest while the greater drop in population and total wages result in a reduction in his gross product rent plus interest plus wages

the household responsibility system in china s agricultural reform a theoretical and empirical study the emergence and eventual prevalence of the household responsibility system which replaces the production team system as the unit of production and income distribution has brought about dramatic changes in china s rural areas since 1979 this institutional change has resulted in remarkable growth in agricultural productivity however in the literature on collective farms a theory that is capable of explaining the causes and effects of this change is yet to be developed the formal theory about collective economies developed so far by ward domar sen oi and clayton bradley maurice and ferguson cameron bonin chinn israelsen putterman and others suggests that the allocation of resources in a collective farm is efficient at least in

land rental development via institutional innovation in rural jiangsu china previous studies have demonstrated that there are two important preconditions for encouraging land rental in agriculture out migration and the enhancement of security and transferability of land rights focusing on the latter we scrutinize the impacts of institutions aimed at facilitating land use dynamism particularly the rural shareholding cooperatives rscs which have been established recently at the local level in rural china in general we find that rscs can pave the way for the extension of property rights to farmland and promote more efficient land use patterns using survey data collected from 300 village committees in rural jiangsu province we estimate the effectiveness of rscs in encouraging land rental our analysis reveals that rscs can serve as intermediate agents for reducing transaction costs associated with exchange of land use rights and thereby not only encourage land rental consolidation activities but also enable the entry of non farm household entities into the farm business

subsidy or market reform rethinking china s farm consolidation strategy chinese food security policy is anchored increasingly on the conviction that domestic grain production should be greatly enhanced and the best way to do so is to expand farm production scale to that end an increasing stream of public investment has been directed to the grain sector in the form for example of farm expansion subsidies our purpose is to assess the potential impacts of china s farm scale expansion on both yields and per hectare economic returns analysis of a large sample of farm household production data finds with some exceptions that grain yields likely will decline as farm size grows compromising food self sufficiency targets more importantly in only isolated cases would per hectare economic returns decline with size thus an emphasis on reducing farmland transactions costs may stimulate cropland consolidation and achieve the desired long term structural transformation

the rapid rise of cross regional agricultural mechanization services in china although adam smith 1776 and alfred marshall 1920 emphasized the gains from specialization that arise from the division of labor their focus was on the manufacturing sector both saw farming as being on too small a scale and bereft of economies of scale with a market that was too small and local with too sharp a seasonality and too quick a succession of tasks to support either the development of a division of labor over the tasks of a cropping season or of mechanization smith and marshall s vision of farming and its implications for division of labor and mechanization was manifest again in the 1950s to the present in asia ruttan 2001 puts forward nearly the same ideas and terms as smith and marshall but for contemporary small rice farms in asia he emphasizes that the use of machines for the series of short tasks performed on tiny farms would imply costly investment in specialized machines that small farmers would be loath to make and even if these farmers mechanized ruttan posited that it would not induce a segmented and specialized farm labor market as again the critical mass of demand for each segment would not be present otsuka 2012 goes further along these lines to note that only on larger farms would the mechanization investment

housing supply investment demand and money creation a comment on the drivers of london s housing crisis this commentary examines the current emphasis on supply side solutions to the housing crisis in england building more homes to increase accessibility against a backdrop of intensifying demand side pressures the financialisation of housing and the impact of credit liberalisation and money creation on housing demand and prices it reflects on the need to balance additional housing supply where needed with gradual demand management responses that at last acknowledge the centrality of spatially unbounded investment demand and the flow of money created by deregulated banks into housing as fundamental to the current crisis of housing affordability and access

farm size and the determinants of productive efficiency in the brazilian center west this paper explores the determinants of technical efficiency and the relationship between farm size and efficiency in the center west of brazil this is the region where agricultural production and total factor productivity have grown the fastest since 1970 it is also a region characterised by unusually large farms technical efficiency is studied with data envelopment analysis and county level data disaggregated by farm size and type of land tenure the efficiency measure is regressed on a set of explanatory variables which includes farm size type of land tenure composition of output access to institutions and indicators of technology and input usage the relationship between farm size and efficiency is found to be non linear with efficiency first falling and then rising with size type of land tenure access to institutions and markets and modern inputs are found to be important determinants of the differences in efficiency across farms

formalising economics social change values mechanics and mathematics in economic discourse the mathematisation and formalisation of economic science has been one of the most important features of the development of economic science in the latter part of the twentieth century what were the causes behind this ubiquitous mathematisation of economic science recent scholarship places excessive emphasis on the role and prestige of mathematics as a scientific tool in this paper we argue this is inadequate not least because it fails to account for the whole classical era when mathematical economists failed to have any impact explaining this failure is one of the main aims of this paper most accounts focus mostly on the intellectual factors involved failing to do justice to what amounts to a multifaceted and complicated phenomenon involving social economic political intellectual normative and institutional factors partly redressing the balance by bringing to the fore the various factors involved is the other prime aim of this paper

rabbit hutches on postage stamps planning development and political economy the supply of land for housing has been restricted by planning controls the prices of land and of houses have risen in consequence as a result land has been used with increasing intensity with infill town cramming and smaller houses on less land rabbit hutches on postage stamps a destruction of the urban environment of the many to preserve a rural environment for a few why is the supply of land restricted firstly it is suggested because the british misapprehend the degree of urbanisation in their own country secondly because rural and farming interests ensure that the planning system operates in their favour and thirdly and most importantly because the planning process is tilted in favour of the existing residents of an area who seek to preserve their environment by resisting intruders a number of suggestions are made to resolve the situation by increasing the supply of land or reducing the demand for land

land conversion at the urban fringe a comparative study of japan britain and the netherlands in the 1980s the multiplier between land values for agricultural and urban uses was found to run at 50 200 times or even higher in the areas surrounding expanding cities in japan and britain co

new ways of looking at old issues inequality and growth abstract the paper uses new cross country data on income and asset land distribution to show that i there is a strong negative relationship between initial inequality in the asset distribution and long term growth ii inequality reduces income growth for the poor but not for the rich and iii available longitudinal data provide little support for the kuznets hypothesis policies that increase aggregate investment and facilitate acquisition of assets by the poor might thus be doubly beneficial for growth and poverty reduction

the impact of china s economic reforms on agricultural productivity growth this paper presents a method for assessing the relative importance of price increases and strengthened individual incentives due to the introduction of the responsibility system for the post 1978 increase in china s agricultural productivity data on post 1978 chinese agricultural performance suggest that a little over three quarters of the measured productivity increase is due to payment system changes and the remainder to price increases we also use our method to calculate incentive indices giving an estimate of the fraction of their marginal product that peasants received under the pre 1978 regime

the paradigm of agricultural efficiency and its implication on food security in africa what does meta analysis reveal summary the study investigates whether african agricultural efficiency levels have been improving or not and what drives them over the years based on 442 frontier studies using meta regression analysis the results show that the mean efficiency estimates from studies decrease significantly as year of survey in the primary study increases also studies published in journals with parametric specification and with panel data produced significantly higher efficiency estimates while those with a focus on grain crops reported significantly lower efficiency estimates other results show that education followed by experience extension and credit are the major drivers of agricultural efficiency levels in africa

coase spatial pricing and self organising cities modern computational techniques offer new horizons for urban economics in the form of agent based simulation frameworks this paper reports on a cellular automata ca simulation in which urban land transforms on the basis of locally optimal bargaining between developers and local communities local governments because ca is an explicitly spatial modelling methodology the space time specific paths to global equilibrium can be observed because it is an atomistic methodology cells represent decision units it is suitable for articulating microeconomic theories of urban processes including planning we present a space time specific simulation of cities evolving under two alternative planning regimes in one the community has property rights and uses planning conditions planning gain impact fees and so on to ensure that each development occurs at a socially optimal density this is a theoretically simplified rendition of the british development control system simplified in the sense of acting from a position of perfect knowledge and having a single objective of optimising locational externalities in the other simulation developers have the right to develop but the community is allowed to make rather than receive compensatory payments in order to achieve socially optimal land use patterns and densities decision making in both systems is local and socially efficient however case by case ad hoc development control with compensatory exactions has the effect of steering development to the least polluting locations although socially optimal densities can occur under alternative control regimes as the second simulation demonstrates the stylised british development control process acts like a decentralised locational pricing system and by definition yields a superior land use pattern than any other style of planning system at one level our model articulates the coasian invariance theorem the same partial equilibrium outcome can be achieved whichever way the property rights over land development fall at another level the results demonstrate that in a spatial resource allocation problem such as land use planning global equilibrium is not independent of property rights the total social product in the urban land economy is greater when the community holds rights over development

planning and housing supply in two speed britain modelling local market outcomes summary economic research on uk housing markets has only recently got to grips with measuring and modelling the impact of planning and other public interventions although their importance has long been recognised in theory the interurban panel dataset utilised in this study does represent a step forward by permitting more robust econometric estimation and by incorporating a wider more balanced range of determinant factors a coherent set of relationships governing the key market outcomes house prices new building migration and vacancies can be established the modelling framework is used to explore differences in behavioural responses between markets in high and low demand states simulations are used to track the impact on market outcomes of different policy strategies applied in different types of locality supply measures needed to achieve national targets for house price growth reduction are assessed measures acting on both demand side and supply side variables in areas of high and low demand are compared these suggest that output is more sensitive than price to policies and that quite strong concerted policies would be needed to impact significantly on the major market imbalances currently seen

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

ricardo s volte face on machinery a formal restatement of the numerical example ricardo invoked to explain his change of mind on the feasibility of the depressing effect of technology on labor underlines the analytical difficulty that he could not overcome and thus explains his inconclusive results this difficulty is basically due to the absence of a clearly perceived demand theory demands for goods factor services and money characteristic of him and of classical economics in general since the focus of the technology labor issue is on the expected change of demand for labor in response to technical change the failure of classical economists and of ricardo to propose a relevant theory was inevitable

the rise of large farms in land abundant countries do they have a future increased levels and volatility of food prices has led to a surge of interest in large scale agriculture and land acquisition this creates challenges for policy makers aiming to establish a policy environment conducive to an agrarian structure to contribute to broad based development in the long term based on a historical review of episodes of growth of large farms and their impact this paper identifies factors underlying the dominance of owner operated farm structures and ways in which these may change with development the amount of land that could potentially be available for expansion and the level of productivity in exploiting available land resources are used to establish a country level typology the authors highlight that an assessment of the advantages of large operations together with information on endowments can provide input into strategy formulation at the country level a review of recent cases of land acquisition reinforces the importance of the policy framework in determining outcomes it suggests that transparency and contract enforcement recognition of local land rights and ways in which they can be exercised attention to employment effects and technical viability and mechanisms to re allocate land from unsuccessful ventures to more productive entrepreneurs are key areas warranting the attention of policy makers

the nature of the farm abstract using a model based on a trade off between moral hazard incentives and gains from specialization this paper explains why farming has generally not converted from small family based firms into large factory style corporate firms nature is both seasonal and random and the interplay of these qualities generates moral hazard limits the gains from specialization and causes timing problems between stages of production by identifying conditions in which these forces vary we derive testable predictions about the choice of organization and the extent of farm integration to test these predictions we study the historical development of several agricultural industries and analyze data from a sample of over 1 000 farms in british columbia and louisiana in general seasonality and randomness so limit the benefits of specialization that family farms are optimal but when farmers are successful in mitigating the effects of seasonality and random shocks to output farm organizations gravitate toward fa

ricardo was right ricardo added a chapter on machinery to the third and last edition of his principles in it he contended that invention of machinery could reduce i the demand for labor ii wages and iii national income this paper is devoted to the analytical questions of whether ricardo was right that viable invention can reduce the total of real output after all competitive prices adjust to clear all markets and why so many mainstream economists doubt ricardo after a defense of ricardo s analysis the political and ideological aspects of the historical discussions are evaluated mathematical proofs are provided in an appendix

the future of small farms trajectories and policy priorities summary while smallholder development has in the past led to reductions in poverty and hunger does this still apply in today s more globalized world this paper reviews the debates on the contemporary role of agriculture in development and the case for small farms in light of the rise of supermarkets lower commodity prices and liberalized trade agricultural research funding environmental change hiv aids and changing policy ideas although the answers vary greatly by context for many low income countries smallholder development remains a key option the policy agenda however has changed in addition to providing public goods the growing challenge is to overcome market failures which is largely a matter of institutional innovation

quota prices as indicators of comparative advantage in supply managed industries the canadian farm products agencies act 2012 requires that comparative advantage be used to guide the allocation of new quota under supply management this requirement however has not been met in practice agricultural economists have proposed several ways of making this legal requirement operational we review and evaluate these proposed approaches and find that quota prices are the only direct measure of comparative advantage in supply managed industries we develop an agent based general equilibrium model of quota exchange to illustrate the use of quota prices as indicators of comparative advantage our approach complements the proposal by meilke 2009 to use quota prices as indicators of comparative advantage in supply managed industries and also addresses the concerns of larue and gervais 2008 that quota prices may not be theoretically consistent with comparative advantage we also discuss potential practical challenges of using quota prices as indicators of comparative advantage in the canadian supply managed industries finally we provide an example of calculating provincial shares of new quota using recent quota price data according to two prototype decision rules this abstract was borrowed from another version of this item

farm mechanization scale economies and polarization the japanese experience abstract whether economies of scale are the major factor underlying concentration of agricultural land in large farms has long been under debate the case study of japanese agriculture for the past three decades confirmed the tendency observed from international comparison that increasing returns in agricultural production emerge when economic development reaches a stage at which real wage rates begin to rise sharply it was found that the effect of scale economies was highly significant even though the intersectoral labor market effect was greater on land concentration the results imply that developing countries need not worry about mechanization to cause more unequal land distribution if factor markets are not unduly distorted

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

wage growth landholding and mechanization in chinese agriculture this paper uses farm panel data from china to examine the dynamics of land transactions machine investments and the demand for machine services recently china s agriculture has experienced a large expansion of machine rentals and machine services provided by specialized agents which has contributed to mechanization of agricultural production the empirical results show that an increase in nonagricultural wage rates leads to expansion of self cultivated land size a rise in the proportion of nonagricultural income or the migration rate also increases the size of self cultivated land interestingly however relatively educated farm households decrease the size of self cultivated land which suggests that relatively less educated farmers tend to specialize in farming the demand for machine services has also increased if agricultural wage and migration rate increased over time especially among relatively large farms the results on crop income support the complementarity between rented in land and machine services demanded which implies that scale economies are arising in chinese agriculture with mechanization and active land rental markets

goals and consequences of rice policy in japan 1965 80 the change in welfare of producers and consumers government cost and the deadweight loss arising from the various forms of government interventions into the rice market in order to protect domestic producers in japan are estimated in a partial equilibrium framework results of the quantitative analysis indicate that the motivation of the government was to minimize budget costs in achieving the target level of producer price support while consumer welfare had an insignificant weight in the government s objective function it is aiso found that acreage control is a second best policy to reduce social inefficiency produced from other forms of market distortions

the development of the land lease market in rural china this paper examines the development of the land lease market in rural china special attention is paid to productive heterogeneity among farmers and the openness of the labor market in activating the land lease market a theoretical model is employed to explore the underlying connections an econometric model is implemented using a two period panel data set gathered in three counties of china s zhejiang province the results show that productive heterogeneity and a freer labor market do promote more land leases the implications for the institutional change literature are discussed

contextual political economy not whig economics the paper has three objectives first it seeks to resuscitate a methodology of the history of economic thought that takes account of the problem solving efforts of political economists rather than concentrating entirely on the putative advances in techniques of analysis detaching them from their political and social context second it seeks to establish the priority of two italian savants in theorising some basic features of capitalist growth long before its prime movers had been conceptualised in the eighteenth century third it puts colonialism and imperialism as the ever present components of capitalist development on centre stage contextual political economy would be a study of the capitalist system as it has really operated i e as a system characterised by enormous turbulence superimposed on growth in which formal and informal colonialism and speculation have played major roles

success and failure of reform insights from the transition of agriculture this paper analyzes the linkages between the reform strategies in transition countries and economic performance the authors focus on agriculture because of the sharpness of the policy changes fundamental differences among countries and relative simplicity of agricultural relationships the authors document post reform performance in the transition countries of asia and europe the authors show how a pricing reform and subsidy reductions b land rights reform and policies that affect farm restructuring and c the presence institutions that facilitate exchange either markets or market substitutes affect output and productivity the paper ends with general lessons on reforms and transition

the roles of land tenure reforms and land markets in the context of population growth and land use intensification in africa this article reviews the past and potential future roles of land tenure reforms and land markets in sub saharan africa ssa as responses to population growth in the process of land use intensification and livelihood transformation the farm size distribution and the existence of an inverse relationship ir between farm size and land productivity in ssa and the implications of this relationship for efficiency and equity are investigated more secure property rights and removal of restrictions on land markets have the potential to create both efficiency and equity benefits but there are high risks of elite capture of large land areas with inefficient and inequitable outcomes this situation is the case not only in land abundant areas but also in urban and peri urban areas where increasingly larger proportions of people will make their living increasing population pressure in densely populated rural areas contributes to more rapid rural urban migration and creating alternative livelihood opportunities for the migrating youth population is essential to achieving economic development with social stability

british planning policy and access to housing some empirical estimates there is evidence that the implementation of the planning system creates scarcity rents for land in different uses by acting as a constraint on land supply this paper provides for 1984 estimat

rising real wages mechanization and growing advantage of large farms evidence from indonesia this paper examines dynamic patterns of land use capital investments and wages in agriculture using farm panel data from indonesia the empirical analysis shows that with an increase in real wages that prevailed in both agricultural and non agricultural sectors in rural areas relatively larger farmers increased the size of operational farm land by renting in land as well as used more hired in machines through machine rental and or service providers which induces the substitution of labor by machines machines and land are complementary and consistently the inverse farm size productivity relationship tends to be reversed among relatively large holders the results support growing diminishing advantage of large small farms in the presence of rapidly rising real wages and have food security policy implications to many asian countries where real wages are rapidly rising and small farms are predominant

reforms globalization and endogenous agricultural structures in this paper i draw lessons from two quasi natural experiments the transition process in former communist countries and the rapid globalization of food chains on the optimality of farms and agricultural structures more generally i argue that a the farm structures that have emerged from the transition process are much more diverse than expected ex ante b this diversity is to an important extent determined by economic mechanisms which are influenced by initial conditions eg technology and reform policies c non traditional farm structures have played an important role during transition since they were optimal to address the specific institutional and structural constraints imposed by the transition process d there is more diversity than often argued in the farms that are integrated in global food chains e endogenous institutional contracting innovations in food chains may lock existing farm structures in a long run institutional framework and f indicators based on farm structures are not a good measure of welfare effects of the globalization of food chains

the evolving role of agriculture in poverty reduction an empirical perspective abstract the role of agriculture in development remains much debated this paper takes an empirical perspective and focuses on poverty as opposed to growth alone the contribution of a sector to poverty reduction is shown to depend on its own growth performance its indirect impact on growth in other sectors the extent to which poor people participate in the sector and the size of the sector in the overall economy bringing together these different effects using cross country econometric evidence indicates that agriculture is significantly more effective in reducing poverty among the poorest of the poor as reflected in the 1 day squared poverty gap it is also up to 3 2 times better at reducing 1 day headcount poverty in low income and resource rich countries including those in sub saharan africa at least when societies are not fundamentally unequal however when it comes to the better off poor reflected in the 2 day measure non agriculture has the edge these results are driven by the much larger participation of poorer households in growth from agriculture and the lower poverty reducing effect of non agriculture in the presence of extractive industries

the impact of planning on local business rents despite the pervasiveness of planning intervention in the land and property market the economic effects of the planning system have been little researched while there is a growing body of work addressing this issue in the housing sector similar work considering the business sector is marked only by its absence the paper describes the first substantive attempt to explore this subject area through an analysis of the impact of planning on business rents a full structural model of a local property market was developed it incorporates the planning regime as a key element of the system and it allows for the interaction between property market use sectors the model formed the basis for the creation of a simplified five equation system that could be operationalised within extant data constraints upon application a local effect of planning was identified that was consistent with theory as planning regimes become tighter the local supply of space decreases this has a negative effect on local economic ac

food insecurity income inequality and the changing comparative advantage in world agriculture i would like to argue in this article that in the process of economic development in land poor countries in asia agriculture faces three distinctly different problems food insecurity sectoral income inequality and the declining food self sufficiency associated with the declining comparative advantage in agriculture at the high income stage massive imports of food grains to asia if they occur will aggravate the world food shortage which will have significant implications for the poverty incidence in the world i argue that in order to avoid such a tragedy asia should expand farm size to reduce labor cost by adopting large scale mechanization sub saharan africa should realize a green revolution in grain production and latin america should further expand its grain production capacity

political reforms rural crises and land tenure in western europe abstract this paper analyzes the origins and causes of the differences and changes in land tenure institutions over more than a century in several western european countries the analysis shows that differences and changes in land tenure are caused by a combination of economic institutional and political factors including the french revolution changes in agricultural profitability voting rights reforms etc significant changes in land tenure regulations resulted from the combination of both improved political representation of tenants in parliament and a severe economic crisis increasing the pressure for reforms empowerment of small tenants and farm workers and increasing their access to and influence on policy making appears to be an important pre condition in order to improve their land tenure rights

explaining agricultural and agrarian policies in developing countries the paper describes and as far as possible explains variations in policies programs and institutions that influence agricultural growth agrarian relations and rural welfare across developing countries and over time it evaluates the impact of distorted policy patterns on agricultural production and rural poverty and identifies conditions under which policy reforms meant to bring about greater efficiency and equity are likely to be initiated and sustained it draws upon a broad range of literature to show how material conditions missing markets and government policies affect static welfare outcomes patterns of accumulation state formation and the establishment of political institutions it suggests ways to improve policy advice and proposes directions for future research

economic growth convergence and agricultural economics after nearly two centuries of lagging behind the industrial countries growth in many developing countries has surged since the early 1990s this outperformance has major implications for almost all areas of agricultural economics and if continued will likely do so into the future this article aims to identify the key ways in which the changes in rich and poor country growth rates matter for agricultural economists as a basis for formulating better research agendas a key impact arises through sharp increases in demand for agricultural resources as demand for livestock products increases this changing structure of food demand has important implications for nutrition studies and policies with the emergence of a double burden of malnutrition on the supply side growth in developing countries tends to increase domestic food supply which is also boosted by increases in research and development spending growth in developing countries both stimulates and benefits from increases in infrastructure investment evaluation of which requires new analytical tools negative impacts include the contribution of increased demand for livestock products to global greenhouse gas emissions in terms of trade policy growth in developing country is tending to lead to convergence of agricultural policies with the pattern of assistance seen in today s developed countries raising concerns about the future need to deal with collective action problems particularly those that increase the volatility of world prices

the relation between farm size and farm productivity the role of family labor supervision and credit constraints abstract the paper shows that if the performance of hired farmhands is affected by supervision from family members and if the availability of credit is dependent on the amount of land owned then a systematic positive or negative relationship between per acre yields and farm size will prevail a model with no supervision effects on labor productivity would predict that yields are unaffected by farm size the paper also investigates the relation between land utilization and owned holding size when land rental possibilities are limited results are shown to be compatible with various observed patterns in ldcs