Journal of Applied Sciences1812-56541812-5662Asian Network for Scientific Information10.3923/jas.2002.1013.1015M.R. Wagan F.C. Oad K.S. Nenwani 112002211The field trial was conducted to assess the effect of source and schedule of nitrogenous fertilizer on wheat growth and yield contributing characters, at Latif Experimental Farm, Sindh Agriculture University Tandojam, Pakistan, Wheat variety Sarsabz was drilled to test various nitrogenous fertilizer (urea, ammonium nitrate and ammonium sulphate) applied in two and three splits with basal dose of P and K. The results revealed that nitrogen applied in three split doses significantly increased plant height, number of tillers, size of earhead, seed index and grain and straw yields as compared to two split applications. Among the source of nitrogen, urea was ranked at first place as compared to ammonium nitrate and ammonium sulphate fertilizers for growth and yield contributing characters. Therefore, it is recommended that urea is the best source of nitrogen and it should be applied in three split doses during the whole wheat crop growth stages for obtaining satisfactory straw and grain yields.]]>Bobowicz, R.J., G.M. Hyde and J.B. Simpson,198539194194Chhajro, H.K.,19891989Destri-Nicosia, O.L. and M. Quitadmo,198337308308Dubetz, S. and S. Freyman,1983379797Farnworth, J. and S.A. Said,198337307307Garcia, M.I.L. and B.C. Torres,198144560560Khalilove, G.R. and E.K. Mekhtieva,197831767767McKenzie, R.,20022002Palmer, G.M. and W.E.R. Madge,198239194197Rathore, S.S. and R.M. Singh,198033876876Steel, R.G.D. and J.H. Torrie,1980Tila, M.S., A. Shah and S. Hussain,198730841845Yousef, M.E., K. Sagir and M.A. El-Sharkwy,197762933