The contribution of off-season weeds to the supply and conservation of soil nutrients under sweetpotato [Ipomea batatas (L.)] ridges in Tanzania

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Apr 17, 2006

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Nzenga Community Development Project, PO Box 700 Nzenga, Tabora, Tanzania

Department of Soil Science, Sokoine University of Agriculture, PO Box 3008 Morogoro, Tanzania

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UNISWA Research Journal of Agriculture, Science and Technology Vol. 8(1) 2005: 16-25