Two field experiments for transplanted and broadcasted lice were Conducted at
the Rice Research and Training Center (RRTC), Sakha, Kafr El-Sheikh, Egypt during
the1996 and 1997 seasons to study the response of five rice cultivais, namely, Gin
181, Gin 177, Gin 178, Sakha 101, and Sakha 102 to four spliting times of nitrogen
application i.e. (T1) two splIts, 2/3 as basal and incorborated into dry soil + 113 as top
dressing at panicle Initiation time. (T,) three equal splits (113 as basal and
incorporated Into dry soil + 113 as top-dressing at maximum tillering stage +1/3 as
top-dressing at panicle initiation time, (T3) three splits, 112 as basal and incorporated
into dry soIl +1/4 as top-dressing at panicle initiation time + 1/4 as top-dressing after
complete flowering, and (T4) all the nitrogen amount was incorporated into dry soil
and their interactions on grain yield, yield components and some grain quality
characters. The split plot design was used, and the main plots were devoted to five
rice cultivars and the subplots were allocated to the time of nitrogen applications.
The results revealed that by using the broadcast method, Gin 178 gave the highest
va:ues for number of tillers/rn’, number of panicles/m’, number of filled
grains/panlcle, grain yield and harvest index. Whereas Sakha 101 produced the
highest values for 100.grain weight, grain yield and harvest index in transplanting
method. Split nitrogen (1/2 basal+114 at panicle initlation+1/4 at complete flowerln)
for broadcasted seeded rice gave the highest values for number of panicleslm,
panicle weight, grain yield and harvest index. While splitting nitrogen (213 basal and
1/3 at panicle initiation) gave the highest values of number of tillers/rn’, number of
panicleslm’, panicle weight, straw yield, grain yield and harvest index in
transplanting method. Transplanting gave significant higher grain yield and head
rice compared with broadcasting method. To obtain hlgh’yleld and quality, It could
be recommended to grow both Gin 178 and Sakha 101 with splitting nitrogen in
three splits (1/2 as basal+114 at panicle inltlation+1/4 at complete flowering) for
broadcasting and transplanting methods under conditions similar to that of this
experiment.
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