The productivity of the Vertisols in the Ethiopian highlands could be raised by facilitating the removal of excess water from the field in the main rainy season. This could be accomplished by the introduction of an animal powered broadbed maker (BBM) which shapes the soil into broadbeds and furro...
Astatke, A.
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Mohamed-Saleem, M.A.
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[Effect of different cropping options on plant-available water of surface-drained Vertisols in the Ethiopian highlands]
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Effect of different cropping options on plant-available water of surface-drained Vertisols in the Ethiopian highlands
Presents results of economic analysis carried out in southwestern Nigeria to determine the profitability of alternative land use systems, taking into account the short and long-run impact of soil erosion on agricultural productivity. The fallow systems include 1. two continuous cultivation alley ...
Ehui, Simeon K.
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Kang, B.T.
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Spencer, D.S.C.
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[Economic analysis of soil erosion effects in alley cropping. No-till and bush fallow systems in south west Nigeria]
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Economic analysis of soil erosion effects in alley cropping. No-till and bush fallow systems in south west Nigeria
Larbi, Asamoah
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Smith, Jimmy W.
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[Forage legume living mulch or crop and livestock production in the West African derived savannah]
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Forage legume living mulch or crop and livestock production in the West African derived savannah
Examines the extent and methods of crop production in the Fulani agropastoral system in central Nigeria by analyzing cropping patterns, management techniques employed, and inputs to cropping such as labour, draught power & fertilizers, and output in terms of grain yield, energy and crop residues.
Powell, J.M.
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Taylor-Powell, E.
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[Les activities culturales dans le systeme agropastoral peul du Nigeria central]
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Les activities culturales dans le systeme agropastoral peul du Nigeria central
Studies the effect of ridge height on sorghum production and the benefits associated with ridging including increase in yields of grain and residue and root density.
Tarawali, G.
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Mohamed-Saleem, M.A.
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[Effets des facons culturales sur la densite des racines et les rendements en grains et en residus de sorgho]
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Effets des facons culturales sur la densite des racines et les rendements en grains et en residus de sorgho
Estimates moisture availability in Ethiopia since 1953, using a model developed by the FAO; correlates results of the analysis using existing meteorological data with the recorded incidence of drought and famine.
Henricksen, B.L.
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Durkin, J.W.
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[Humidite disponible, periode de vegetation et possibilites d'alerte precoce en cas de famine en Ethiopie]
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Humidite disponible, periode de vegetation et possibilites d'alerte precoce en cas de famine en Ethiopie
Management of harvested (senescent) banana pseudostems has implications for efficiency of nutrient use for sole cropped as well as intercropped bananas. Two studies were conducted on aspects of nutrient flows from senescent pseudostems. Sixty one and 55% of the initial N and P, respectively, in s...
Maintenance of soil organic matter (SOM) at levels that sustain optimal supply of soil nutrients and enhance efficiency of externally added fertilizers is a major challenge for smallholder farming systems of southern Africa. A study was conducted to quantify the interactive effects of organic res...
Mapfumo, Paul
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Mtambanengwe, F.
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Vanlauwe, Bernard
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[Organic matter quality and management effects on enrichment of soil organic matter fractions in contrasting soils in Zimbabwe]
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Organic matter quality and management effects on enrichment of soil organic matter fractions in contrasting soils in Zimbabwe
Ecophysiological models are increasingly used as research and decision support tools in agriculture, but it is often difficult to assess how suitable a model is for a particular application. Model evaluations usually involve bivariate linear regression between observed and simulated values, which...
White, Jeffrey W.
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Boote, Kenneth J.
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Hoogenboom, Gerrit
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Jones, Peter G.
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[Regression-based evaluation of ecophysiological models]
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Regression-based evaluation of ecophysiological models
Nitrogen (N) has been gradually depleted from West African soils and now poses serious threats to food production. Many ways of increasing N supply (e.g. judicious use of inorganic fertilizers and nitrogen-fixing plants) have been tried in West African farming systems. Herbaceous and woody legume...
Sanginga, Nteranya
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[Role of biological nitrogen fixation in legume based cropping systems: A case study of West Africa farming systems]
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Role of biological nitrogen fixation in legume based cropping systems: A case study of West Africa farming systems