Research Article
The Effect of Nitrogen and Phosphorus on Growth and Yield of Roselle (Hibiscus sabdariffa var. sabdariffa L.) In a Semi Arid Agro-Ecology of Nigeria
Faculty of Agriculture, Department of Crop Science, Usmanu Danfodiyo University, P.M.B. 2346, Sokoto, Nigeria
M. D. Magaji
Faculty of Agriculture, Department of Crop Science, Usmanu Danfodiyo University, P.M.B. 2346, Sokoto, Nigeria
A. I. Yakubu
Faculty of Agriculture, Department of Crop Science, Usmanu Danfodiyo University, P.M.B. 2346, Sokoto, Nigeria