TY - SER AU - Abdel-Aal,M.H. AU - Mohaseb,Mohamed I. TI - Effects of nitrogen forms on yield of sorghum (Andropogen sorghum) and their residual effect on a following wheat crop on a sandy soil KW - Sorghum KW - Fertilizers N1 - Includes bibliographic reference N2 - Two field experiments were carried out on a sandy soil at Ismailia Agric. Res. Station, lsmailia governorate Egypt in a split plot design. The first experiment was during summer 2016 on sorghum (Andropogen sorghum, v. Dorado). The main plots contained treatments of fertilizer nitrogen forms, i.e. Ammonium Nitrate 33%N, Urea 46%N Urea Formaldehyde 40%N and Neem Coated Urea 40%N on sorghum. Four rates of i.e. l90,238 and 286 Kg N /ha(80, 100 and 120 kg N/fed) were arranged in the sub main plots. The second field experiment was carried out during the following winter, season of2016- 2017 growing wheat (Tricticum aestivum), on the same plots of the first experiment, to study the residual effect. ,Results obtained the increases the rate of caused a significant increase in grains and straw yields of sorghum, as well as grain yield of the following wheat. The highest mean values of soil total-N as well as and available-N occurred after wheat harvest in soil given the 238 kg/ha in rate as urea formaldehyde or Neem coated urea UR - http://nile.enal.sci.eg/EALE/2018/AASM/5618/2/439.pdf ER -