EFFECT OF SPLITTING NITROGEN FERTILIZATION 0N BREAD WHEAT PRODUCTIVITY | ||||
| Journal of Plant Production | ||||
| Article 1, Volume 31, Issue 10, October 2006, Page 6129-6142 PDF (2.83 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2006.236330 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| S. A. EI-Sawi,; M. A. Khaled; S. A. Se|eem | ||||
| National Wheat Research Program, Field Crops Research Institute, ARC | ||||
| Abstract | ||||
| Two field experiments were conducted in 2002/2003 and 2003/2004 growing seasons at Sakha Agric. Res. Sta. ARC, to study the effect of four N splitting treatments on the productivity of four promising wheat cultivars GemmizaE—l .Gemmizato ,Sakha94 and Giza'lBB . The form of nitrogen as ammonium nitrate (33.5% N) was applied in four treatments as follows: N. : 3 splits compressing 20 % at sowing, 40% before the first irrigation and 40% before the second one (the recommended method). ' N” : 2 splits containing 25 % before the first irrigation and 75% before the second one. N.” : 4 splits including 20% at sewing and 30%,30% and 20% which applied before; the first, second and third irrigations, respectively, NW :3 splits including 25% , 50% and 25% of the N fertilizer whereas applied before; the first, second and third irrigations , respectively The results showed that, Cultivars were significantly differed in most of the studied characters that Gemmizaii was the latest cultivar in heading and maturity dates .lt produced heavier grain weight / spike and recorded the greatesttOOO-grain weight and the highest grain and biological yield / fad. Gemmiza‘lo was the shortest cultlvar, earlier in heading and maturity and recorded greater number of grains / epiire and producing lower biological yield. SakhaQ-rt was the taliest cultivar and the earliest in maturity. GizatBB cultivar recorded the lowest 1000__grain weight and grain yield / fad. The best method for splitting N fertilizer was recorded by NI treatment which also recommended by the scientific institutions .Splitting N fertilizer into three splits including 20 % oi the applied tertilizer at sowing ,40% applied before the first irrigation and 40% applied before the second irrigation positively affected grain yield of wheat. All studied characters were not significantly affected by the interaction between cultivars and methods of Splitting N fertilizers. Application of N fertilizer of wheat preferably as a top dressing between littering ,40% and stem elongation It % is a strategy to be recommended method from the stand poin‘ both oi environment and of farmer returns | ||||
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