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Common bean (Phaseolus vulgaris) is an important nutritional component in the diet of more than 300 million people around the world. Its production is limited by drought and aluminium toxicity among other abiotic factors. Correction of acidity-related soil constraints such as aluminium toxicity...

Sorghum (S. bicolor, L) is a major crop of the hotter and drier regions of the tropics and subtropics grown by resource poor farmers for their subsistence. It can also be cultivated in marginal lands and areas of high rainfall characterized by low pH soils high in aluminium (Al).The overall...