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Powell, J M and Ikpe, F N and Somda, Z C (1999) Crop yield and the fate of nitrogen and phosphorus following application of plant material and feces to soil. Nutrient Cycling in Agroecosystems, 54 (3). pp. 215-226. ISSN 1385-1314
Powell, J M and Fussell, L K (1993) Nutrient and structural carbohydrate partitioning in pearl millet. Agronomy Journal, 85 (4). pp. 862-866. ISSN 0002-1962
Kouamé, C N and Powell, J M and Renard, C A and Quesenberry, K H (1993) Plant yields and fodder quality related characteristics of millet-stylo intercropping systems in the Sahel. Agronomy Journal , 85 (3). pp. 601-605. ISSN 0002-1962
Sivakumar, M V K and Renard, C and Bationo, A and Powell, J M and Weber, J and Goli, A E (1994) Inter-Center Collaboration at the ICRISAT Sahelian Center. Documentation. International Crops Research Institute for the Semi-Arid Tropics.