Abstract:
A field experiment was
conducted to study the effect of different
nitrogen management methods on yield,
yield components and quality attributes of
maize hybrids (single cross-6142 and
double cross-4444) under irrigated
conditions. Nitrogen dose is met either by
PM (poultry manure) or urea according to
each treatment. PM was incorporated at the
time of presowing irrigation whereas
fertigation method at knee height stage and
foliar spray at flowering were use for the
application of urea. Results showed that
plant height, cob diameter, number of grains
per cob, grain yield and biological yield
were significantly affected by the hybrids.
Significantly, higher plant height, cob
diameter, number of grains per cob, grain
yield and biological yield were produced by
single cross-6142. There was no significant
difference occur between both hybrids on
seed oil and protein contents. N
management by the application of T3 (60%
N from PM + 38.5% N from urea through
fertigation + 1.5% N from urea through
foliar application) produced significantly
more plant height, cob diameter, number of
grains per cob, grain yield, biological yield,
seed protein and seed oil contents. The
interaction of single cross-6142 and T3
(60% N from PM + 38.5% N from urea
through fertigation + 1.5% N from urea
through foliar application) was found
superior in production of more plant height,
cob diameter and number of grains per cob.
However, interaction between maize
hybrids and N application methods for
grain yield, biological yield, seed protein
and oil contents was reported nonsignificant.
It can be concluded that single
cross hybrid-6142) and T3 (60% N from
PM, 38.5% N from urea through fertigation
and 1.5% N from urea through foliar
application) could be used successfully for
improving maize yield under the irrigated
conditions.
