Increasing agricultural water use efficiency to meet future food production

Wallace, Jim

doi:10.1016/s0167-8809(00)00220-6

Cited by 571 publications

(293 citation statements)

References 17 publications

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“…High water losses are associated with poorly managed soil surfaces in hot environments with high evaporative demand. For example, in rain-fed millet in West Africa, Wallace (2000) reported that soil evaporation losses constituted 30-45% of rainfall, runoff and drainage constituted 40-50%, while only 15-30% of the rainfall was available for transpiration. In fields where farmers establish sparse crop stands as a management strategy under poor fertility, evaporation losses are likely to be higher.…”

Section: Resultsmentioning

confidence: 99%

Nitrogen and phosphorus capture and recovery efficiencies, and crop responses to a range of soil fertility management strategies in sub-Saharan Africa

Chikowo

Corbeels

Mapfumo

et al. 2009

Nutr Cycl Agroecosyst

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This paper examines a number of agronomic field experiments in different regions of subSaharan Africa to assess the associated variability in the efficiencies with which applied and available nutrients are taken up by crops under a wide range of management and environmental conditions. We consider N and P capture efficiencies (NCE and PCE, kg uptake kg -1 nutrient availability), and N and P recovery efficiencies (NRE and PRE, kg uptake kg -1 nutrient added). The analyzed cropping systems employed different soil fertility management practices that included (1) N and P mineral fertilizers (as sole or their combinations) (2) cattle manure composted then applied or applied directly to fields through animal corralling, and legume based systems separated into (3) improved fallows/cover cropscereal sequences, and (4) grain legume-cereal rotations. Crop responses to added nutrients varied widely, which is a logical consequence of the wide diversity in the balance of production resources across regions from arid through wet tropics, coupled with an equally large array of management practices and inter-season variability. The NCE ranged from 0.05 to 0. 123Nutr Cycl Agroecosyst DOI 10.1007/s10705-009-9303-6 quality manure immobilized soil N, while response to P was in many cases poor due to P fixation by soils. Other than good agronomy, it was apparent that flexible systems of fertilization that vary N input according to the current seasonal rainfall pattern offer opportunities for high resource capture and recovery efficiencies in semi-arid areas. We suggest the use of cropping systems modeling approaches to hasten the understanding of Africa's complex cropping systems.

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Section: Resultsmentioning

confidence: 99%

Nitrogen and phosphorus capture and recovery efficiencies, and crop responses to a range of soil fertility management strategies in sub-Saharan Africa

Chikowo

Corbeels

Mapfumo

et al. 2009

Nutr Cycl Agroecosyst

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“…Eighty percent of available water resources in the world are currently used to support irrigated agriculture (Wallace, 2000). As a result of the water resource crisis, water-saving agriculture is essential for the sustainable development of human societies.…”

Section: Introductionmentioning

confidence: 99%

Effects of super-absorbent polymers on a soil–wheat (Triticum aestivum L.) system in the field

Hughes

et al. 2014

Applied Soil Ecology

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“…Therefore, quantifying the maximum yield per unit of available water supply, hereafter called the water-limited yield, is essential for identifying water management practices and policies to optimize water-use efficiency (Wallace, 2000). Boundary functions provide a robust framework to analyze water-limited productivity (e.g., French and Schultz, 1984;Passioura, 2006;Sadras and Angus, 2006).…”

Section: Introductionmentioning

confidence: 99%

Limits to maize productivity in Western Corn-Belt: A simulation analysis for fully irrigated and rainfed conditions

Grassini

Yang

Cassman

2009

Agricultural and Forest Meteorology

231

124

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Increasing agricultural water use efficiency to meet future food production

Cited by 571 publications

References 17 publications

Nitrogen and phosphorus capture and recovery efficiencies, and crop responses to a range of soil fertility management strategies in sub-Saharan Africa

Nitrogen and phosphorus capture and recovery efficiencies, and crop responses to a range of soil fertility management strategies in sub-Saharan Africa

Effects of super-absorbent polymers on a soil–wheat (Triticum aestivum L.) system in the field

Limits to maize productivity in Western Corn-Belt: A simulation analysis for fully irrigated and rainfed conditions

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