Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 9 of 9 for “"yield gap"”.
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An evaluation of some management practices for improving wheat productivity in northern Pakistan
… of Agriculture Department, estimates the yield gap as a result of deviations between actual and recommended practices and identifies the causes of deviations. The study has implications for policy makers, researchers, extension workers and farmers.
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Maize response to fertilizer and fertilizer-use decisions for farmers in Ghana
Current maize yields in Ghana average only one-third of their estimated potential, but this yield gap can be reduced by improving farming practices and growing conditions in Ghana; specifically, yields in Ghana can likely be increased by intensifying the use of fertilizer, other inputs, and …
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Impacts of pesticide use practices and gender on cowpea productivity of smallholder farmers in Benin
… of African smallholder farmers. Yet, cowpea yields in Africa are among the lowest in the world and one possible explanation for the yield gap is cowpea’s high vulnerability to insect pest attacks. Pesticides have been widely acknowledged as the most effective method of controlling pests and …
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Ecosystem services provided by agricultural land as modeled by broad scale geospatial analysis
… System (VALUES), the North Carolina Realistic Yield Expectations (RYE) database, and the land cover datasets NLCD and CDL. Furthermore I sought to model tradeoffs between provisioning and other services. First I assessed the accuracy of agricultural land in NLCD and CDL over a four county area …
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Climate change and global crop yield: impacts, uncertainties and adaptation
… of climate change impacts on global crop yield, and of farmers’ adaptive capacity, remains incomplete as previous global assessments: (1) inadequately evaluated the role of extreme weather events; (2) focused on a small subset of the full range of climate change predictions; (3) overlooked …
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Closing yield gaps in South Asian wheat production (Bihar, India and Terai of Nepal)
… the Eastern Indo-Gangetic Plain. Closing wheat yield gaps in this region through agronomic practices currently available to farmers can contribute to a more secure future in this region. In Nepal and Bihar, India, a set of complementary management practices were associated with higher yields, …
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Impacto e projeção de séries meteorológicas na safra de milho em Minas Gerais
… foi estabelecido por meio de análise em "yield gap". Por fim, para contemplar respostas da planta com ambiente futuro foram produzidas análise em impactos biometeorológicos no milho, ou seja, estimativas da ocorrência do número dias sem chuva (NDSC); precipitação total; transpiração; …
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Genes, haplotypes and physiological traits associated with a chromosome 3B locus for wheat improvement in hot climates
… by dry and hot conditions, increasing the yield gap between potential and actual yield. To close this gap, the identification of genes contributing to yield in stressed conditions is one key to the breeding of tolerant cultivars. However, due to low stability across environments, no genes …
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Food demand and supply under global change
… impairs the agriculture sector, reducing crop yields namely due to soil degradation, water scarcity, and climate change. However, this is a more complex issue than it appears. Crop yields can be increased by use of agrochemicals and fertilizers which are mainly produced by fossil energy. This …