TY - JOUR AV - restricted A1 - Powell, J M A1 - Ikpe, F N A1 - Somda, Z C TI - Crop yield and the fate of nitrogen and phosphorus following application of plant material and feces to soil UR - http://dx.doi.org/10.1023/A:1009762900258 JF - Nutrient Cycling in Agroecosystems SN - 1385-1314 PB - Springer N1 - We would like to thank Salvador Fernandez-Rivera, Pierre Hiernaux and Michael Russelle for their constructive comments on the first draft of this pape N2 - Organic materials are the most important sources of nutrients for agricultural production in farming systems of semi-arid West Africa. However, reliance on locally available organic nutrient sources for both crop and livestock production is rapidly becoming unsustainable. A series of feeding and agronomic trials have been conducted to address the role of livestock in sustainable nutrient cycling. This paper reports results of a greenhouse study that evaluated the effects of applying crop residue and browse leaves, or feces derived from these feeds, at equal organic-N application rates (150 kg ha Y1 - 1999/// SP - 215 ID - icrisat5110 EP - 226 VL - 54 IS - 3 ER -