bluuebunny/crossref_metadata_2025 huggingface dataset:
MEN OR MEASURES? CONSERVATIVE PARTY POLITICS, 1815–1951 Parliament and politics in the age of Churchill and Attlee: the Headlam diaries, 1935–1951. Edited by Stuart Ball. Cambridge: Cambridge University Press for the Royal Historical Society, Camden 5th ser., 14, 1999. Pp. xiii+665. ISBN 0-521-66143-9. £40.00. Disraeli. By Edgar Feuchtwanger. London: Arnold, 2000. Pp. xii+244. ISBN 0-340-71910-9. £12.99. The self-fashioning of Disraeli, 1818–1851. Edited by Charles Richmond and Paul Smith. Cambridge: Cambridge University Press, 1999. Pp. ix+212. ISBN 0-521-49729-9. £30.00. Stanley Baldwin. By Philip Williamson. Cambridge: Cambridge University Press, 1999. Pp. xvi+378. ISBN 0-521-43227-8. £25.00. Protection and politics: Conservative economic discourse, 1815–1852. By Anna Gambles. Woodbridge, Suffolk: Boydell Press for the Royal Historical Society, Royal Historical Society Studies in History, n.s., 1999. Pp. xi+291. ISBN 0-86193-244-7. £40.00. Agriculture and politics in England, 1815–1939. Edited by J. R. Wordie. London: Macmillan Press, 2000. Pp. vii+260. ISBN 0-333-74483-7. £47.50.
Authors: WINDSCHEFFEL ALEX
Published: February 2003

With his unparalleled genius for self-promotion, Benjamin Disraeli advised us to ‘read no history, nothing but biography, for that is life without theory’. Historians of the British Conservative party have followed his instructions faithfully, long seduced by the charms of the political biography. In recent years alone the world has seen the publication of two scholarly and highly flattering biographies of the third marquess of Salisbury, by Andrew Roberts and David Steele, alongside a reconstruction of the distinctive Salisburian philosophical world by Michael Bentley, and a long overdue biography of Bonar Law by R. J. Q. Adams. Of the newer vintage, we now have Anthony Seldon's biography of John Major and the first instalment of John Campbell's deconstruction of Margaret Thatcher. One can only shudder with trepidation at the unedifying prospect of the weighty and earnest tomes devoted to William Hague or Iain Duncan Smith awaiting tomorrow's historians. The fates and fortunes of the party continue to be intertwined unproblematically with the qualities of its successive leaders. On one level this is inevitable, befitting the self-image of a party which has always valued leadership and hierarchy. But on another level the predilection for biography has encouraged Conservative studies to remain stubbornly immured within a set of sterile and untheoretical paradigms. The tendency is for narration rather than explanation, for ‘party’ to be defined institutionally rather than organically, and for the world of politics to be reduced to conversations held within the hermetic corridors of Westminster. The more imaginative and innovative work on Victorian and Edwardian politics to have appeared in recent years has been carried out by historians of the Liberal and Labour parties.
GENDER IN MODERN EUROPE: CRIME AND VIRTUE Gender and crime in modern Europe. Edited by Margaret L. Arnot and Cornelie Usborne. London: UCL Press, 1999. Pp. xv+288. ISBN 1-85728-746-0. £14.99. Breaking the codes: female criminality in fin-de-siècle Paris. By Ann-Louise Shapiro. Stanford: Stanford University Press, 1996. Pp. vi+265. ISBN 0-8047-2693-0. £10.95. Reign of virtue: mobilizing gender in Vichy France. By Miranda Pollard. Chicago: University of Chicago Press, 1998. Pp. xxi+285. ISBN 0-226-67350-2. £15.95.
Authors: CHILDERS KRISTEN STROMBERG
Published: February 2003

The past decade has seen a virtual explosion in scholarship about issues of gender in the history of modern Europe. Historians have taken up topics from the fall of Louis XVI during the Revolution to the role of women in fascism to demonstrate the pivotal importance that matters of sexual difference have made in shaping politics, culture, and society in the last centuries. Scholars have realized that interpretations of class dynamics, work relations, collective action, and nations at war, for example, look considerably different and are far more complex when attention is paid to gender. Where the study of women in the past was once relegated to the backwaters, now courses on women's history and gender have taken a permanent place in most university curricula. Histories that include women have moved from ‘her-story’ (crudely, the history of individual women and their accomplishments) to analyses that use gender as an interpretative prism through which to view larger social and political transformations.

The three books under review participate in this larger movement toward integrating the perspectives of gender into major issues of European history that have been researched by historians before, but from a standpoint that these authors find lacking. Margaret Arnot and Cornelie Usborne, as editors of a collection of essays on gender and crime, wish to correct some of the assumptions about women and crime that have been ignored by historians who focus mostly on more historically conspicuous male criminals. Ann-Louise Shapiro uses the trials of criminal women in late nineteenth-century Paris as ‘lightning rods’ that illuminate the social, political, and cultural conflicts of the fin-de-siècle.
Predicting grain yield and protein content in winter wheat and spring barley using repeated canopy reflectance measurements and partial least squares regression
Authors: HANSEN P. M. , JØRGENSEN J. R. , THOMSEN A.
Published: February 2003

By providing both spatial and temporal information remote sensing may function as an important source of data for site-specific crop management. This technology has been used for nitrogen application strategies to obtain optimum yield and grain quality. Here, the objective was to use early repeated remotely sensed multi-spectral data to predict grain yield and quality for winter wheat (Triticum aestivum L.) and spring barley (Hordeum vulgare L.). The crops were sown with two different seeding rates and a wide range of nitrogen strategies were applied. Multi-way partial least squares regression (N-PLS) was used to predict grain yield and protein content. The results were compared with unfold-PLS1 and PLS1 using reflectance data from the last measurement day. Both single reflectance wavelengths and selected vegetation indices were used simultaneously. The results reveal that all models can make a good prediction of yield in both crops with unfold-PLS1 and N-PLS as the best. However, estimation of grain protein content at harvest was very poorly determined in barley, as no relation between the reflectance measurements and barley protein content was obtained. The relation between reflectance measurements and protein content was slightly better in wheat, where especially N-PLS improved the prediction of grain protein content. The overall conclusion of the present experiments is that data from repeated measurements of reflectance used in multi-way partial least squares regression before heading improved the prediction of grain yield and protein content in wheat and barley.
Tolerance indicators and responses of rice cultivars to infestation by the African rice gall midge, Orseolia oryzivora
Authors: OMOLOYE A. A. , ODEBIYI J. A. , WILLIAMS C. T. , SINGH B. N.
Published: February 2003

The mechanisms and host plant responses that are indicative of tolerance to the African rice gall midge, Orseolia oryzivora Harris & Gagne were investigated in four promising donor rice cultivars, Cisadane, Bw 348-1, Tox 4093-17-1 and ITA 306 (local check), in a screen house at the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria. Results indicated that Cisadane was tolerant to infestations on the basis of higher (P<0.05) percentage seedling survival, production of significantly higher number of fertile tillers, productive panicles and significantly higher grain yield per infested plant than the control. Both single infestation at one larva per plant and adult infestation once at 14 days after seeding were positively correlated to higher fertile tiller production per infested plant (at 80 days after transplanting) and higher grain yield per infested plant at maturity. The grain yield per infested plant was significantly higher (P<0.05) in the tolerant variety (Cisadane) than in the control.
Utilization of nitrogen- and mineral-rich vascular forage plants by reindeer in winter
Authors: STOREHEIER P. V. , MATHIESEN S. D. , TYLER N. J. C. , SCHJELDERUP I. , OLSEN M. A.
Published: February 2003

The marginal winter pastures of reindeer and caribou (Rangifer tarandus) in Arctic and sub-Arctic areas are assumed to be nitrogen- and mineral-poor. Reindeer eat a mixed diet consisting of nitrogen-deficient lichens and a wide variety of vascular plants in winter. Some reindeer populations manage to maintain carcass mass outside the growing season and very little is known about the ability of reindeer to utilize vascular plants in this season. The chemical composition and in vitro digestibility of 17 species of vascular forage plants and one species of moss collected mid-winter from beneath the snow at an inland winter pasture in northern Norway were determined. Wintergreen parts of graminoids had a high content of crude protein (0.072–0.108 g/kg dry matter (DM)) and water-soluble carbohydrates (0.098–0.167 g/kg DM) and were highly digestible (50–65% IVDMD) compared with the withered parts of the plants (27–53% IVDMD). The digestibility of both shrubs and graminoids was inversely related to content of cellulose and lignin, but positively correlated with increasing contents of water-soluble carbohydrates. Shrubs were relatively calcium-rich (3.6–6.1 g/kg DM) while wintergreen graminoids contained up to 10.0 g/kg DM of potassium, 1.5 g/kg DM magnesium and 2.1 g/kg DM phosphorus. The present study demonstrates that the wintergreen parts of several species of vascular plants are nutritious, containing high levels of nitrogen and minerals, and that they are highly digestible to reindeer in winter. Vascular plants may, therefore, be more important to reindeer and caribou in winter than previously realized.
Effects of crossbred ewe genotype and ram genotype on lamb carcass characteristics from the lowland sheep flock
Authors: DAWSON L. E. R. , CARSON A. F.
Published: February 2003

A study was carried out on five lowland farms in Northern Ireland over 2 years to investigate the effects of crossbred ewe and ram genotype on lamb carcass characteristics. Four ewe genotypes were sourced from six hill farms – Bluefaced Leicester×Blackface (BLXB), Texel×Blackface (TXB), Suffolk×Cheviot (SXCH) and Texel×Cheviot (TXCH). On each farm groups of 20 to 30 of each crossbred ewe genotype were crossed with Suffolk or Texel sires. Within each of the ram breeds, high lean growth index rams sourced from UK sire reference schemes (SRS) were compared with rams sourced from flocks not involved in objective genetic improvement programmes (control). Throughout the 2 years of the study the ewes lambed at 1 and 2 years of age. Lambs from each of the crosses were slaughtered at 36, 44 and 52 kg live weight. Assessed on a 5-point scale, lambs from BLXB ewes had the poorest conformation classification values (2.8) (P<0.001) compared with 3.0–3.2 (S.E. 0.051) for lambs from the other ewe genotypes. Lambs from TXB, SXCH and TXCH ewes had similar conformation classification values. The differential in conformation classification values between lambs from BLXB ewes and those from the other genotypes was greater when the ewes were crossed with Texel (0.6 units) compared with Suffolk rams (0.3 units) (P<0.05). Differences in conformation between the sire breeds varied according to ewe genotype (P<0.05). When crossed with BLXB ewes there was no difference between Texel and Suffolk-sired lambs in terms of conformation classification values (2.7 v. 2.8 (S.E. 0.07), while with all the other ewe genotypes, Texel-sired lambs had a significantly higher conformation classification than Suffolk-sired lambs (3.5 v. 3.0 when crossed with T×B; 3.2 v. 2.9 when crossed with SXCH; 3.4 v. 3.0 when crossed with TXCH (S.E. 0.07)). Sire reference scheme-sired lambs had greater growth rates from birth to slaughter (203 g/day) compared with control-sired lambs (193 g/day) (S.E. 3.7 days) (P<0.05) and were of an improved conformation classification (3.1 v. 3.0 (S.E. 0.04)) (P<0.01). There was a significant interaction (P<0.01) between ram breed and ram source on lipid content of the carcass. Within the Suffolk-sired lambs, there was no significant difference between SRS-sired lambs (197 g/kg) and control-sired lambs (190 g/kg) (S.E. 6.2 g/kg). However, within the Texel-sired lambs, SRS-sired lambs had a lower lipid content (174 g/kg) than control-sired lambs (204 g/kg) (S.E. 6.2 g/kg) (P<0.01).
Effects of crossbred ewe genotype and ram genotype on ewe prolificacy, lamb viability and lamb output in the lowland sector
Authors: DAWSON L. E. R. , CARSON A. F.
Published: February 2003

A study was carried out on five lowland farms in Northern Ireland over 3 years to investigate the effect of crossbred ewe and ram genotype on ewe prolificacy, lamb viability and weaned lamb output. Four crossbred ewe genotypes were sourced from six hill farms involved in a previous study – Bluefaced Leicester×Blackface (BLXB), Texel×Blackface (TXB), Suffolk×Cheviot (SXCH) and Texel×Cheviot (TXCH). On each farm, groups of 20–30 of each crossbred ewe genotype were mated with Suffolk or Texel rams. Throughout the 3 years of the study, the ewe genotypes lambed at 1, 2 and 3 years of age. Within each of the ram breeds, high lean growth index rams sourced from UK sire reference schemes were compared with rams sourced from flocks not involved in objective genetic improvement programmes (control). BLXB ewes were the most prolific of the four ewe genotypes producing 1.73 lambs per ewe lambed compared with 1.47 for TXB, 1.46 for SXCH and 1.41 for TXCH (P<0.001). Lamb mortality was similar for the four ewe genotypes, thus number of lambs weaned was greatest for the BLXB ewes (P<0.001) with the other three crosses producing similar numbers of lambs. A greater proportion (P<0.05) of SXCH ewes lambed without assistance compared with BLXB and TXB ewes and a greater proportion of TXCH ewes had abundant supplies of colostrum compared with the other crosses (P<0.10). Output of weaned lamb per ewe lambed and per ewe metabolic live weight (P<0.001) was greatest in the BLXB ewes. Ewe productivity, prolificacy, number of lambs weaned and the proportion of ewes lambing without assistance increased with ewe age (P<0.001). Lamb growth rate from birth to 6 weeks and from birth to weaning increased with ewe age (P<0.05). Crossbred ewes lambing at 3 years old had a greater output of weaned lamb compared with ewes lambing at 1 and 2 years old (P<0.001). Ram genotype had no effect on ewe prolificacy, lamb viability or pre-weaning growth rates, although Texel-sired lambs had lower birth weights than Suffolk-sired lambs and control-sired lambs had lower birth weights than high lean index-sired lambs (P<0.05).
Tropical browses: contents of phenolic compounds, in vitro gas production and stoichiometric relationship between short chain fatty acid and in vitro gas production
Authors: GETACHEW G. , MAKKAR H. P. S. , BECKER K.
Published: February 2003

The contents of phenolic compounds, protein precipitation capacity (PPC) and in vitro gas production of tropical browse species were evaluated. The stoichiometric relationship between in vitro gas measured on incubation of tannin-containing browses in buffered rumen fluid and calculated from short chain fatty acid (SCFA) production was investigated. Crude protein (CP) contents in the browses ranged from 54 to 300 g/kg dry matter (DM). Total phenol (TP), tannins (T) and condensed tannins (TP and T as tannic acid equivalent; CT, as leucocyanidin equivalent) ranged from 17–250, 7–214, and 0–260 g/kg DM respectively, and PPC from 0 to 1066 μg BSA precipitated/g DM. CP content of browses was negatively correlated with TP, T, CT and PPC. A significant correlation was observed between per cent change in gas production on addition of polyethylene glycol (PEG) and the contents of phenolics (r = 0.76 for both TP and T). Addition of PEG to tannin-containing browses increased in vitro gas production. PPC was significantly correlated with TP (r = 0.87; P<0.001), T (r = 0.83; P<0.001), and CT (r = 0.41; P<0.05). A good relationship (R2 = 0.94; P<0.001) was observed between measured in vitro gas production and that calculated from SCFA. The molar proportions of SCFA were not affected by the inclusion of PEG (P>0.05). The relationship between in vitro gas measured on incubation of browse leaves and that calculated from SCFA allows prediction of SCFA from gas production.
Seedling development and biomass as affected by seed size and morphology in durum wheat
Authors: APARICIO N. , VILLEGAS D. , ARAUS J. L. , BLANCO R. , ROYO C.
Published: February 2003

This work evaluated the effect of seed size and morphology on the development and biomass of durum wheat seedlings. Three different seed-grading sizes selected by sieving were used in glasshouse experiments, and a set of three developmental and 23 biomass-related indices were measured on eight genotypes, at two moisture levels. The influence of seed size on seedling development was studied at high and low temperatures (22/12 °C, and 15/5 °C day/night temperatures, respectively), in growth chambers.

The area of the seed and the area of the embryo were the seed morphological traits most affected by seed size. Seed size was strongly associated with seedling development and seedling biomass until the complete extension of the first two leaves, at the fourth leaf stage. The rate of first-leaf growth and the area of the first leaf were the developmental and biomass traits, respectively, most sensitive to seed-grading size.
Effects of long-term straw management and fertilizer nitrogen additions on soil nitrogen supply and crop yields at two sites in eastern England
Authors: SILGRAM MARTYN , CHAMBERS BRIAN J.
Published: February 2003

The effects of straw incorporation (early and late cultivation) and straw burning were contrasted in a split-plot study examining the impact of long-term straw residue management, and six fertilizer nitrogen (N) rates on soil mineral nitrogen, crop fertilizer N requirements and nitrate leaching losses. The experiments ran from 1984 to 1997 on light-textured soils at ADAS Gleadthorpe (Nottinghamshire, UK) and Morley Research Centre (Norfolk, UK).

Soil incorporation of the straw residues returned an estimated 633 kg N/ha at Gleadthorpe and 429 kg N/ha at Morley on the treatment receiving 150 kg/ha per year fertilizer N since 1984. Straw disposal method had no consistent effect on grain and straw yields, crop N uptake, or optimal fertilizer N rates. In every year there was a positive response (P<0·001) to fertilizer N in straw/grain yields, N contents and crop N offtakes at both sites. Nitrate leaching losses were slightly reduced by less than 10 kg N/ha where straw residues had been incorporated, while fertilizer N additions increased nitrate leached at both sites.

At both sites there was a consistent effect (P<0·001) of straw disposal method on autumn soil mineral N, with values following the pattern burn>early incorporate>late plough. The incorporation of straw residues induced temporary N immobilization compared with the treatment where straw was burnt, while the earlier timing of tillage on the incorporate treatment resulted in slightly more mineral N compared with the later ploughed treatment. Fertilizer N rate increased (P<0·001) soil mineral nitrogen at both sites. At Morley, there was more organic carbon in the plough layer where straw had been incorporated (mean 1·09 g/100 g) rather than burnt (mean 0·89 g/100 g), and a strong positive relationship between organic carbon and fertilizer N rate (r2=93·2%, P<0·01). There was a detectable effect of fertilizer N on readily mineralizable N in the plough layer at both Gleadthorpe (P<0·001) and Morley (P<0·05). At Morley, there was a consistent trend (P=0·06) for readily mineralizable N to be higher where straw had been incorporated rather than burnt, indicating that ploughing-in residues may contribute to soil nitrogen supply over the longer term.
Solution culture for screening rice varieties for sodicity tolerance
Authors: SINGH R. K. , MISHRA B. , CHAUHAN M. S. , YEO A. R. , FLOWERS S. A. , FLOWERS T. J.
Published: February 2003

Sodic soils are widespread, especially in the Indo–Gangetic plain. Amelioration with gypsum is effective, especially when combined with growing a crop of rice. However, it has proved difficult to generate new varieties of sodic-tolerant rice, because of the difficulties of screening – other than in the field, where spatial variation of sodicity is notoriously high. Growing plants at high pH in solution culture in a controlled environment is problematic, because of the effects of pH on nutrient availability. This study evaluated a system of growing rice in a nutrient solution with added Tris but without minor nutrients, which were supplied in a foliar spray. Performance was evaluated from the change in weight and in appearance and correlated with performance in soil. Growing rice in the presence of Tris (4 mM, pH 8·6) provides a means of evaluating genotypic differences in response to sodicity.
Genotypic and phenotypic variability in Vernonia galamensis germplasm collected from eastern Ethiopia
Authors: BAYE TESFAYE
Published: February 2003

Ethiopia is the centre of origin and diversity of Vernonia galamensis, which is a new potential industrial oilseed crop. Seeds of Vernonia are rich in vernolic acid, a naturally epoxidized fatty acid with unique chemical (epoxy) and physical (low viscosity) properties. Vernolic acid is a useful raw material for manufacturing paints and coatings. No effort has been made so far in Ethiopia or elsewhere to improve this plant. Therefore, an experiment was conducted in three contrasting agroclimatic zones (Alemaya, Harar and Babile) using eight accessions to assess the genotypic (GCV) and phenotypic (PCV) coefficients of variation, to estimate broad sense heritability (h2B) and genetic advance (GA) as a per cent of the mean for 17 pheno-morphic and agronomic traits.

Considering GCV, h2B and GA (as per cent of the mean) simultaneously as the best estimators of the amount of advance expected from selection, secondary head number (28·90, 0·90 and 56·60), secondary branch number (13·90, 0·67 and 51·97), and seed number per head (15·97, 0·72 and 27·92) gave the highest values at Alemaya, Harar and Babile, respectively. This shows that a satisfactory selection program for improvement of these characters is possible in V. galamensis var. ethiopica at each specific location.
In vivo digestibility and nutritive value of Atriplex halimus alone and mixed with wheat straw
Authors: ALICATA M. L. , AMATO G. , BONANNO A. , GIAMBALVO D. , LETO G.
Published: February 2003

In vivo digestibility trials were carried out using six young rams fed with Atriplex halimus biomass harvested in summer (A) and in early autumn (B), and with a mixture of mid-autumn Atriplex halimus and wheat straw (5[ratio ]1 ratio on fresh matter basis) (C). Atriplex halimus had a high protein content (139·0, 135·9 and 193·4 g/kg DM in A, B and C respectively), but was rich in sodium chloride, especially in summer (145·9 g/kg DM), limiting its use as feed. The summer forage had a higher organic matter (OM) digestibility coefficient than the autumn forage (0·663 v. 0·530) but lower digestible OM intake (16·8 v. 29·4 g/day per kg BW0·75). In autumn forage, the combination with straw did not influence the digestibility of organic matter, whereas it enhanced DOM intake in comparison with the Atriplex halimus on its own (35·7 v. 29·4 g/day per kg BW0·75).
The influence of feeding strategy on growth and rejection of herbage around dung pats and their decomposition
Authors: BOSKER T. , HOEKSTRA N. J. , LANTINGA E. A.
Published: February 2003

Fresh cattle dung from four farms with different feeding strategies was used to create artificial dung pats in a continuously grazed pasture in order to compare the rejection of herbage growing around the pats, the effect on undisturbed herbage growth under cages and pat decomposition. The first farm was an extensive organic farm (ORGE) with young steers grazing on a biodiverse sward. The second was an intensive organic farm (ORGI) with dairy cattle grazing on a grass/clover sward during the day and fed low-protein forages indoors. The third dung used was from an integrated farm (INT), where the feeding strategy was aiming for high dung quality by including straw in the diet. The fourth examined dung was from a conventional farm (CONV) aiming for a high milk production per cow, where fertilized grazed grass was the main component of the diet. A human smell test was performed to rank the odour of the four dungs.

After 6 weeks of continuous grazing with dairy cattle, herbage yield around INT pats tended to be lowest, whilst undisturbed herbage yield in and around caged INT pats was highest (P<0·05). Therefore, it could be concluded that rejection was lowest for INT. The CONV pats gave highest rejection (P<0·05). However, herbage yield around the dung pats under grazing showed no significant correlation with both the human smell test and the contents of total-N and sugar in the rejected herbage.

The feeding strategy had a significant effect on the decomposition of dung pats under the cages. After 6 weeks, the most liquid and least fibrous dung (CONV) showed highest decomposition (P<0·05), whilst decomposition of the most solid and fibrous dung (ORGE) tended to be lowest. However, no relationship was found between the decomposition of dung and the rejection of herbage around the dung pats.

When combining a number of parameters determined in the experiment and comparing them using index figures for dung quality in terms of rejection, herbage growth and decomposition, the index figures of ORGI (102) and especially INT (113) were above average (100), while those of ORGE (94) and CONV (90) were below average. The difference between ORGI and INT might be explained by the addition of straw to the diet in the latter. The study showed that there are possibilities to improve dung quality by altering feeding strategy.
The use of spatial analysis to measure the effect of environmental heterogeneity on genetic variation in Trifolium species from Sardinia
Authors: BENNETT S. J. , GALWEY N. W.
Published: February 2003

Trifolium species are native to the Mediterranean Basin where they are an important component of permanent pastures. A number of species have become naturalized in Australia and are agriculturally important in annual pastures. To understand the importance of genetic and ecotypic variation in the adaptation of Trifolium species to a new environment, seeds of three predominantly inbreeding and two predominantly outcrossing species of Trifolium were collected from 12 sites in Sardinia in 1998. Detailed ecogeographic information was collected at each site. The progeny were grown at the University of Western Australia Field Station at Shenton Park, Western Australia in 1999, and were scored for 10 morphological characters. Spatial analysis was applied to the data to improve the estimation of accession means, and to investigate the relationship with environmental variables that characterized the sites of collection. The spatially adjusted means were used as the basis for a principal components analysis. Ecogeographical factors at the sites of collection, particularly soil pH, are suggested to be more important than breeding system in determining the extent of genetic variation within the species. The species that showed the greatest genetic variation between accessions were the predominantly inbreeding species T. glomeratum and T. subterraneum, and the predominantly outcrossing species T. nigrescens. It is suggested that the wide genetic variation of these three species is largely due to their being in an ecogeographic environment close to their optimum, and to the possession of a mating system that is neither completely outcrossing nor completely self-fertilizing. The remaining two species, T. tomentosum and T. resupinatum, both occur more frequently on alkaline soils, and it is suggested that for the collected accessions of these two species the acid soils of Sardinia are a stressful environment that does not promote high levels of genetic variation.
The effects of cultivation method, fertilizer input and previous sward type on organic C and N storage and gaseous losses under spring and winter barley following long-term leys
Authors: VINTEN A. J. A. , BALL B. C. , O'SULLIVAN M. F. , HENSHALL J. K.
Published: February 2003

The effects of ploughing or no-tillage of long-term grass and grass-clover swards on changes in organic C and N pools and on CO2 and denitrified gas emissions were investigated in a 3-year field experiment in 1996–99 near Penicuik, Scotland. The decrease in soil C content between 1996 and 1999 was 15·3 t/ha (95% confidence limits were 1·7–28·9 t/ha). Field estimates of CO2 losses from deep-ploughed, normal-ploughed and no-tillage plots were 3·1, 4·5 and 4·6 t/ha over the sampling periods (a total of 257 days) in 1996–98. The highest N2O fluxes were from the fertilized spring barley under no-tillage. Thus no-tillage did not reduce C emissions, caused higher N2O emissions, and required larger inputs of N fertilizer than ploughing. By contrast, deep ploughing led to smaller C and N2O emissions but had no effect on yields, suggesting that deep ploughing might be an appropriate means of conserving C and N when leys are ploughed in. Subsoil denitrification losses were estimated to be 10–16 kg N/ha per year by measurement of 15N emissions from incubated intact cores. A balance sheet of N inputs and outputs showed that net N mineralization over 3 years was lower from plots receiving N fertilizer than from plots receiving no fertilizer.
The effects of cultivation method and timing, previous sward and fertilizer level on subsequent crop yields and nitrate leaching following cultivation of long-term grazed grass and grass-clover swards
Authors: VINTEN A. J. A. , BALL B. C. , O'SULLIVAN M. F. , HENSHALL J. K. , HOWARD R. , WRIGHT F. , RITCHIE R.
Published: February 2003

A 3-year field experiment was conducted in 1996–98 near Penicuik, Scotland, to investigate the fate of N released after cultivation of previously long-term grass and grass-clover swards. The effects of timing of cultivations (autumn and spring), tillage methods (no tillage, ploughing to 200 mm and ploughing to 300 mm) and fertilizer N for spring (0, 40, 80 and 120 kg N/ha) and winter barley (0, 60, 120, 180 kg N/ha) on yield, N uptake and nitrate leaching were measured.

In 1996, after spring cultivation, on plots previously in grass, spring barley grain yield and N uptake did not respond to N fertilizer, but on plots previously in grass-clover there was a nearly linear response to N. In 1997, the spring barley responded to N fertilizer at all levels. Yields of 1997 winter barley after grass did not show a response above 60 kg N/ha, but increased with fertilizer N up to at least 120 kg N/ha after grass-clover. In 1998, there were strong effects of N fertilizer and cultivation method on grain yield and N uptake of both spring barley and winter barley. Winter barley grain yield was significantly higher in plots previously in grass than in plots previously in grass-clover in 1998, though not in 1997. Winter barley yields were higher than spring barley at the same fertilizer N level.

Throughout the 3 years, the no-tillage plots had consistently lower yields than the ploughed plots, but there was no consistent difference between the ploughed and deep ploughed treatments. There were strong interactive effects between tillage and previous sward in 1997. No-tillage under spring barley generally yielded lower than ploughing due to difficulties in weed control and the frequent anaerobic conditions in the soil.

Annual leaching losses were relatively small (6·4–19·6 kg N/ha). In 1996–97, more N was leached from the plots left in stubble following spring barley than from those planted with winter barley after either spring barley or grass in 1996, but in 1997–98 more N was leached from plots in winter barley than from those in over-winter stubble. Nitrate leaching was least under no-tillage, though the effect was not significant.
The great badgers and bovine TB debate
Authors: HANCOX M.
Published: February 2003

Progress in politics and science often happens by serendipity, and an unforeseen effect of the 2001 foot and mouth epidemic will be its impact on bovine tuberculosis in three areas. Cattle TB will be much worse, increasing the risk to public health, and ‘the highly emotive and complex issue’ of badgers and TB may be resolved after 30 years controversy. A critical reappraisal of these three areas is worthwhile.
Tolerance to drought stress among selected Indian wheat cultivars
Authors: DHANDA S. S. , SETHI G. S.
Published: February 2003

Experiments were designed to examine differences in some morpho-physiological characters among wheat genotypes in response to drought stress at anthesis and maturity and to determine the relationships between these characters. In three sets of experiments, one set was evaluated under well-irrigated conditions and two sets under drought stress conditions by developing terminal drought stress at anthesis in one set and at maturity in the other, for 2 years. Genotypes differed in their response at both stages of plant growth for grain yield, days to heading, excised-leaf water loss, leaf membrane stability and relative water content under drought stress. Under irrigated conditions differences in the genotypes for water retention traits were not clear. There were significant genotype×environment interactions. Terminal drought stress resulted in reduced mean values and variability for all characters. The varieties WH 147 and WH 147(U) showed a combination of drought resistance, water retention and high grain yield, whereas C 306, Kharchia 65 and Hindi 62 showed a lower percentage injury in plasma membrane and better water retention in the leaves. Drought resistance index was associated with other characters.
Browse selection by Karakul sheep in relation to plant composition and estimated metabolizable energy content
Authors: DEGEN A. ALLAN , BENJAMIN R. W. , ABDRAIMOV S. A. , SARBASOV T. I.
Published: February 2003

Large areas of the Central Asian Republic of Kazakhstan are classified as desert and semi-desert rangelands and are subjected to severe climatic extremes. The sparse vegetation of these rangelands supports mainly grazing sheep, which are raised for wool and meat production. These two products are important to the national economy and the livelihood of the rural population. The extremes of climate cause periodic shortages of fodder availability that, together with the lack of drinking water and adequate animal shelters, can cause severe animal loss, particularly during the winter but also in other seasons. Desert rangeland improvements have been instigated by the introduction and planting out of palatable drought-resistant fodder shrubs to augment the natural species, many of which appear to have survived only because they are unpalatable and/or inedible. To determine the edibility of 15 natural species, Karakul sheep were observed grazing and/or browsing them and identified those species that were edible. It was predicted that the sheep would selectively browse from shrubs with low phenolic concentration, high estimated metabolizable energy content, high crude protein content and low fibre content. To test this prediction, the shrub foliage was analysed and edibility by sheep was related to chemical composition and estimated metabolizable energy content. Six of the 15 plant species were edible. The only significant factor in determining whether plants were eaten was total phenolic content – plants eaten had a content of 17·7±6·3 g/kg DM whereas plants not eaten had a content of 66·4±129·6 g/kg DM. Metabolizable energy, protein and fibre contents did not affect edibility of the plants.
Canopy morphology and nutritional quality traits as potential grazing value indicators for Lolium perenne varieties
Authors: GILLILAND T. J. , BARRETT P. D. , MANN R. L. , AGNEW R. E. , FEARON A. M.
Published: February 2003

Twelve perennial ryegrass (Lolium perenne L.) varieties of different ploidy and maturity classifications were compared under a frequent cutting management in their second harvest year, equivalent to the simulated rotational grazing system employed in UK testing protocols. Varietal differences in canopy structure (proportion of lamina, green leaf mass, sward surface height, extended tiller height, bulk density) and in herbage nutritive value factors (water-soluble carbohydrate content and proportion of linoleic and α-linolenic fatty acids) were assessed and their importance evaluated with reference to total herbage production. Significant variety variation (P<0·001) was recorded in the annual means of all the canopy structure characteristics. Significant differences associated with ploidy were also recorded, with tetraploid varieties having significantly higher values than diploids in most plant characters, indicating better intake characteristics for these grasses. Temporal patterns of variation associated with maturity were also observed in several characters, thus making it impossible to designate a single assessment that would be representative of the annual ranking of varieties. Water-soluble carbohydrate concentration differed significantly (P<0·001) between varieties and although the tetraploids tended to have high contents, the highest value of all was recorded in a diploid variety, which had been selectively bred for this trait. The varieties did not differ in total lipid content but there were significant differences in the proportion of linoleic acid between varieties (P<0·001) while the proportion of α-linolenic acid differed between varieties (P<0·001), ploidy (P<0·001) and maturity (P<0·05) classes.

Overall evaluation of the extensive variety variation highlighted the need for better quantification of animal responses to differences of these magnitudes, before the high workload of including them in routine variety testing protocols could be justified. Potential for breeding improvement in these factors was also indicated and the future prospects for their use in farmer decision support systems was considered.
Effect of sulphur inoculated with Thiobacillus on saline soils amendment and growth of cowpea and yam bean legumes
Authors: STAMFORD N. P. , FREITAS A. D. S. , FERRAZ D. S. , SANTOS C. E. R. S.
Published: February 2003

A greenhouse experiment was carried out from January–May 2001, to evaluate the effects of elemental sulphur inoculated with Thiobacillus, compared with gypsum, in the amendment of two saline sodic soils (Neosol Fluvic Salic sodic) from the Brazilian semi-arid region, and on growth of the tropical legumes cowpea and yam bean, inoculated with specific rhizobia strains. The treatments consisted of sulphur rates (0·6, 1·2 and 1·8 t/ha) and gypsum (1·8 and 3·6 t/ha), and irrigation water containing the salts NaHCO3, MgCl2, CaCl2, NaCl and KCl, with electrical conductivity 0·2 dS/m at 25 °C. There was a treatment with no sulphur or gypsum applied. The correctives increased Na+ and electrical conductivity on leached solution, and decreased soil pH and exchangeable cations, especially Na+. Sulphur inoculated with Thiobacillus was more efficient than gypsum, reducing soil-exchangeable sodium. Sulphur with Thiobacillus in Soil 1 reduced pH (8·2 to 4·7) and electrical conductivity of the soil saturation extract (15·3 to 1·7 mS/cm) to values below those used for classification as saline and sodic soil. The growth of the tropical legumes cowpea and yam bean was increased by rhizobia inoculation when soil ameliorants were used, especially sulphur in combination with Thiobacillus.
Some problems in the design and analysis of field experiments subject to inter-plot interference
Authors: DYKE G. V. , TODD A. D. , JENKYN J. F.
Published: February 2003

Results from field experiments with mobile pests and air-borne pathogens are subject to bias as a result of inter-plot interference. Serially balanced designs (SBDs) allow interference to be estimated but other designs may be better for decreasing such effects. To investigate this, systematic replicated designs, comparing sprays applied at different times to control powdery mildew of spring barley, were sited in 2 years alongside SBDs testing similar treatments. Yields of grain and assessments of mildew on the leaves were analysed. Results from the balanced designs provided strong evidence of interference in both years but not in a third (when the systematic design was omitted). Estimates of treatment effects from the systematic designs were often, but not consistently, greater than corresponding estimates from the SBDs. A method of analysis from Draper & Guttman (1980) was adapted to produce estimates of the differences between treatments as if applied to all plots of an experiment; this showed larger differences between treatments than the conventional analysis in 1975 and 1976 (when there was appreciable interference), but failed in 1977 when interference was slight. This method fails when applied to the systematic designs; SBDs (which are a subset of all designs in randomized blocks) are probably optimal for this type of analysis. The difficulties of analysing data in the form of percentages or proportions (with consequent non-orthogonality) are discussed.
The End of the World, The Beginners of a Nation: Edward Eggleston and the Crisis of National Meaning in the Gilded Age
Authors: LEVY BRUCE
Published: February 2003

In a remarkable span of days at the turn of the year 1888, Edward Eggleston and Edward Bellamy issued critiques of Gilded Age America that employed a similar, and for the time, unusual, narrative device – the glance backward from the late twentieth century.1 Bellamy's, of course, was Looking Backward, 1887–2000, the most successful novel of the period, and one of the few works of American popular fiction to impel both social action and political reform.2 Eggleston's work, far less ambitious and visionary than Bellamy's, nonetheless warrants interest; not only does it provide a point of entry for recuperating Eggleston's considerable reputation in the nineteenth century as a regional novelist and social historian, it also allows us to recover the relation his writing bore then – and bears now – to American pluralist fantasies about race, class, and national identity.3 Entitled “A Prospective Retrospect,” Eggleston's backward glance purports to describe “The Age of Paradox,” an article from “a magazine called The Twentieth Century … dated November, 1987,” in which a future antiquarian “look[s] back but one hundred years upon American life.” To the observer from the future “the manners of the people of 1887” revealed the paradox of the age. On one hand, the “antiquary” noticed that democratic America had removed from the public arena “any mark of social distinction”; in this “paradoxical age,” he argued, fashion was no longer a reliable gauge of class: “the gentleman, and especially the statesman … held fellowship with cabby in wearing the high hat, the man of the upper walks of life was yet more intimately associated with the waiter, in the fact that the dress-coat of the gentleman was an exact copy of the working coat of the waiter.”
The Nightmare and the Dream: Edward Bellamy and the Travails of Socialist Thought
Authors: HABER SAMUEL
Published: February 2003

In the light of recent events, the once widely accepted Marxist distinction between “scientific” and “utopian” socialism is fading rapidly. For it has become increasingly difficult to believe that any form of socialism is inherent in the workings of history, as the Marxists had claimed for their “scientific” variety. Today Marxism, in its own terms, turns out to be “utopian.” One can now more readily recognize the kinship of the many different socialisms as well as the significance of their link to the social ideals of the past. What had previously been a somewhat antiquarian literature on “precursors,” “forerunners,” and “schismatics” of socialism suddenly appears as especially pertinent and perhaps even central. Today, without difficulty, one turns away from the various contradistinctions developed in this scholarship and toward the interconnections implicit in it.1

Surveying this literature, we can recognize three preeminent social ideals that went into the making of the various socialisms – the call for social justice, the aspiration toward a society of brotherly love, and the belief that one could rid society of poverty. It was the eighth-century prophets of the Hebrew Bible who advanced the audacious demand for justice in society. They urged an end to oppression, cruelty, abuse, and more generally that people be given what was rightfully theirs. This demand recurs in almost all the socialist programs. In the Marxist scheme, it takes the form of the theory of surplus value which describes capitalist profit as a surplus product stolen (“entwandt”) from the worker who creates it.
“Mr. Roosevelt is Guilty”: Theodore Roosevelt and the Crusade for Constitutionalism, 1910–1912
Authors: MURPHY GARY
Published: February 2003

In February 1912 Theodore Roosevelt sought the Republican nomination for president on a radical platform of reform that had a devotion to the Constitution as its central plank. Such an analysis differs from the standard historical explanation for Roosevelt's challenge to the incumbent Republican president, William Howard Taft, which argues that, bored with private life after his return from big game hunting in Africa in 1910 and consumed by an obsessive pursuit of presidential power, he ran to seek revenge on the successor who had failed to live up to the mentor's hopes. By initiating anti-trust suits against US Steel and International Harvester, which Roosevelt had examined when president but had not filed suit against, and by letting the Republican Party be dominated by regulars rather than Progressives, Taft had earned Roosevelt's unyielding enmity; Roosevelt's response was to seek the presidency.1 This article argues that far more important than any personal motivation, however, was Roosevelt's conviction that the issue at stake in 1912 was in essence a crusade for constitutionalism.

Throughout Roosevelt's long career constitutional issues played a primary role in formulating his political views. This was particularly true of the period after he left the presidency in 1909 when his interpretation of the Constitution was used as a means to advance various political ends. The debate about the Constitution, one which had become deep rooted in the national psyche by the close of the first decade of the twentieth century, and the judiciary's role in its interpretation was central to Roosevelt's political philosophy.