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yield gap

December 7, 2017Knowledge Portal
Rooting for food security in Sub-Saharan Africa

This letter provides a quantitative assessment of the┬ádegree to which major agricultural countries in west and east Sub-Saharan Africa (SSA) can join the ranks of the world most productive crop producing regions »

April 3, 2017Knowledge Portal
Satellite-based assessment of yield variation and its determinants in smallholder African systems

This article demonstrates the potential to track smallholder maize yield variation in western Kenya, using a combination of 1-m imagery and intensive field sampling on thousands of fields over 2 years. The emergence of satellite sensors that can routinely observe millions of individual smallholder farms raises possibilities for monitoring and understanding agricultural productivity in many regions of the world. »

December 28, 2016Knowledge Portal
Can sub-Saharan Africa feed itself?

This article, published by the PNAS Journal, presents a study that provides insight about the challenge in meeting the projected tripled cereal demand by 2050 due to expected population growth and modest changes in diets in 10 SSA countries, through scenarios of yield gap closure. Recent studies indicate that the global increase in food demand by 2050 can be met through closing the gap between current farm yield and yield potential on existing cropland. Here, however, we estimate it will not be feasible to meet future SSA cereal demand on existing production area by yield gap closure alone. »

May 3, 2016Knowledge Portal
Addressing the yield gap in rainfed crops: a review

This article in the Agronomy for Sustainable Development Journal explores some of the existing methods to assess potential grain yield, the size of the gap between average and rainfall-limited potential yield and to suggest pathways for future gains in crop yields in the presence of soil degradation, climate change and seasonal variability of rainfall. They focus mainly on cereal and grain legume crops but recognise that oilseed crops such as canola and mustard play an important role in many rainfed cropping systems. »

February 15, 2016Knowledge Portal
Drivers of household food availability in sub-Saharan Africa based on big data from small farms

The analysis in this article uncovers the drivers for the variation in household food availability in sub-Saharan Africa. It suggest that targeting poverty through improving market access and off-farm opportunities is a better strategy to increase food security than focusing on agricultural production and closing the yield gaps. The analysis builds on data from 93 sites in 17 countries in sub-Saharan Africa, across contrasting agro-ecologies and calculated a simple indicator of food availability. »

May 4, 2015Knowledge Portal
Diversification practices reduce organic to conventional yield gap

This article by a group of researchers, published in Proceedings B by Royal Society, compares organic and conventional yields by using a new meta-dataset and a new hierarchical analytical framework that can better account for the heterogeneity and structure in the data. Their main finding is that organic yields are only 19.2% (┬▒3.7%) lower than »