EI-Sawi,, S., Khaled, M., Se|eem, S. (2006). EFFECT OF SPLITTING NITROGEN FERTILIZATION 0N BREAD WHEAT PRODUCTIVITY. Journal of Plant Production, 31(10), 6129-6142. doi: 10.21608/jpp.2006.236330
S. A. EI-Sawi,; M. A. Khaled; S. A. Se|eem. "EFFECT OF SPLITTING NITROGEN FERTILIZATION 0N BREAD WHEAT PRODUCTIVITY". Journal of Plant Production, 31, 10, 2006, 6129-6142. doi: 10.21608/jpp.2006.236330
EI-Sawi,, S., Khaled, M., Se|eem, S. (2006). 'EFFECT OF SPLITTING NITROGEN FERTILIZATION 0N BREAD WHEAT PRODUCTIVITY', Journal of Plant Production, 31(10), pp. 6129-6142. doi: 10.21608/jpp.2006.236330
EI-Sawi,, S., Khaled, M., Se|eem, S. EFFECT OF SPLITTING NITROGEN FERTILIZATION 0N BREAD WHEAT PRODUCTIVITY. Journal of Plant Production, 2006; 31(10): 6129-6142. doi: 10.21608/jpp.2006.236330
EFFECT OF SPLITTING NITROGEN FERTILIZATION 0N BREAD WHEAT PRODUCTIVITY
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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