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Nitrogen fertilizer replacement indexes of legume cover crops in the derived savanna of West Africa por 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 por Kolawole, G.O., Tian, G.

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Phosphorus fractions in fallow systems of West Africa: effect of residue management por 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 por 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 por 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 por 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 por 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 por 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 por 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 por Kolawole, G.O., Kang, B.T.

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

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Differential response of cowpea lines to aluminum and phosphorus application por 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 por Manyong, Victor M., Tian, G., Makinde, K., Kolawole, G.O.

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