EFFECT OF SPLITTING NITROGEN FERTILIZATION ON BREAD WHEAT PRODUCTIVITY
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 Gemmiza9, Gemmiza10, Sakha94 and Giza 168 . The form of nitrogen as ammonium nitrate (33.5%N) was applied in four treatments as follows:
N1:3 splits compressing 20% at sowing, 40% before the first irrigation and 40% before the second one (the recommended method) .
N11: 2 splits containing 25% before the first irrigation and 75% before the second one .
Niii: 4 Splits including 20% at sowing and 30% , 30%and 20% which applied before; the first, second and third irrigations, respectively ,
Niv : 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 Gemmiza9 was the latest cultivar in heading and maturity dates . It produced heavier grain weight /spike and recorded the greatest 1000 - grain weight and the highest grain and biological yield / fad . Gemmiza10 was the shortest cultivar , earlier in heading lower biological yield .Sakha94 was the tallest cultivar and the earliest in maturity Giza168 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% of the applied fartillizer 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 perferably as a top dressing between tillering 40% , and stem elongation 40% is a strategy to be recommended method from the stand point both of environment of farmer returns .
Publication year 2006
Pages 6129-6142
Availability location 9 شارع الجامعة- الجيزة
Availability number
Organization Name
serial title J. Agric. Sci. Mansoura univ
Author(s) from ARC
Agris Categories Agriculture - General aspects
AGROVOC
TERMS		 Nitrogen. Soft wheat.
Publication Type Journal
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