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Nitrogen fertilizer replacement indexes of legume cover crops in the derived savanna of West Africa by Tian, G., Kolawole, G.O., Kang, B.T., Kirchhof, G.

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Response of early growth and nutrient concentration of three multipurpose species to three soil types by Kolawole, G.O., Tian, G.

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Phosphorus fractions in fallow systems of West Africa: effect of residue management by Tian, G., Kolawole, G.O., Tijani-Eniola, H.

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Evaluation of shoot and root traits for identifying P-use efficient cowpea genotypes by Abaidoo, Robert C., Singh, B.B., Nwoke, C, Pypers, Pieter, Diels, J., Kolawole, G.O.

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Rotational effects of cowpea genotypes and P fertilization on the yield of sorghum on P-deficient soils of Sudan and Sahel savannas of west Africa by Saidou, A.K., Abaidoo, Robert C., Iwuafor, E.N.O., Sanginga, Nteranya, Singh, B.B., Kolawole, G.O.

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Evaluation of shoot and root traits for identifying P-use efficient soybean genotypes by Abaidoo, Robert C., Nwoke, C, Pypers, Pieter, Diels, J., Kolawole, G.O.

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Genotypic variation of soybean for phosphorus use efficiency and their contribution of N and P to subsequent maize crops in three ecological zones of West Africa by Abaidoo, Robert C., Sanginga, Nteranya, Okogun, J.A., Kolawole, G.O., Tossah, B.K., Diels, J.

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An improved cover cropfallow system for sustainable management of low activity clay soils of the tropics by Tian, G., Kolawole, G.O., Salako, F.K., Kang, B.

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Longterm alley cropping with four hedgerow species on an Alfisol in southwestern Nigeria effect on crop performance, soil chemical properties and nematode population by Kang, B.T., Caveness, F.E., Tian, G., Kolawole, G.O.

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Effect of seed size and phosphorus fertilization on growth of selected legumes by Kolawole, G.O., Kang, B.T.

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Differential response of cowpea lines to application of P fertilizer by Kolawole, G.O., Tian, G., Singh, B.B.

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Differential response of cowpea lines to aluminum and phosphorus application by Kolawole, G.O., Tian, G., Singh, B.

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Economic evaluation of systems intercropping food crops with leguminous cover crops in the derived savanna of Nigeria by Manyong, Victor M., Tian, G., Makinde, K., Kolawole, G.O.

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