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Weeds as unwanted plant species : their positive aspects in semi-arid areas of Central Tanzania
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Traditional tillage systems as drought adaptation strategies of smallholder farmers: the case of semi-arid Central Tanzania
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Increasing crop yield in water scarce environments using locally available materials: an experience from semi-arid areas in Mpwapwa District, central Tanzania
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Tillage practices and their impacts on soil fertility in farmer' fields in semi-arid Central Tanzania