e-journal
Climate change and eastern Africa: a review of impact on major crops
Global warming has become one of the major challenges in maintaining global
food security. This paper reviews the impacts of climate change on fourteen
strategic crops for eight sub- Saharan Africa countries. Climate change is projected
to increase median temperature by 1.4–5.5°C and median precipitation
by −2% to 20% by the end of the 21st century. However, large levels of
uncertainty exist with temporal and spatial variability of rainfall events. The
impact of climate change on crop yields in the region is largely negative.
Among the grain crops, wheat is reported as the most vulnerable crop, for
which up to 72% of the current yield is projected to decline. For other grain
crops, such as maize, rice and soybean, up to 45% yield reductions are expected
by the end of this century. Two grain crops, millet and sorghum, are more
resilient to climate change for which projected impacts on crop yields are
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