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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...

Sweetpotato is one of the most important sources of carbohydrates among small-scale farmers in Zambia and ranking second only to cassava. A study was conducted under field conditions at three locations during the 2008/09 season to determine the variability of micronutrients and to characterise...