TY - SER AU - Ramadan,S.A. AU - Antar,A.S. AU - El-Leithi,A.A. AU - Nasr El-Din,I.E. TI - Impact of different nitrogen forms and K added on N and K losses into drainage water under cotton cultivation in clay soil of North Delta KW - Cotton KW - Breeding KW - Fertilizers KW - Potassium sulphate KW - Irrigation KW - Nitrogen fertilizers KW - Ammonium sulfate KW - Clay soils KW - Egypt KW - Drainage water N1 - Includes references N2 - A field experiment was conducted to study the effect of applied fertilizer forms from nitrogen on N and K+ leaching through a clay soil into subsurface drains under cotton cultivation in north Delta) Egypt). The N-fertilizers forms (ammonium nitrate; ammonium sulphate and urea) were added to the soil with and without potassium sulphate fertilizer in recommended doses (70 and 48 unit/fed for N and K20, respectively) in two equal doses after the first irrigation and the second one, respectively UR - http://nile.enal.sci.eg/EALE/2009/JARKU/3509/2/776.pdf ER -