Research article · International Journal of Science and Nature

Effect of row arrangement, nitrogen and phosphorus levels on castor total dry matter accumulation in maize ( Zea mays L)/ castor (Ricinus commumis L .) Mixture

U. L. Arunah, M. Mahmud, B. Amans, Luka, G. A. Ahmed, S. Isah, E. C. Odion, B. A. Babaji

• * Correspondent address: Department of Agronomy, Ahmadu Bello University, Zaria