In the western part of EA (Tanzania, Uganda, Burundi, Rwanda and South Sudan), a positive trend was detected (increase of 10–30 kg ha −1 yr −1 , significant for a 90% confidence level).
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Intra-growing season dry-wet spell pattern is a pivotal driver of maize yield variability in sub-Saharan Africa.
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On the contrary, Zimbabwe and northern Botswana showed a negative trend (for example, a decrease of around 20 kg ha −1 yr −1 in Zimbabwe).