Mahgoub, Manal, 		Abdelmalik, Altayeb, 		Babiker, Hashim, AND 		Mohamed, Ahmed.
" Effect of green manure, urea nitrogen and their residuals on yield of sweet pepper (Capsicum annuum L.) and on some soil properties" <em>Gezira Journal of Agricultural Science</em> [Online], Volume 15 Number 1 (1 June 2017)