Abstract:
An experiment was conducted at the Agronomy Field of Sher-e-Rangla
Agricultural University, Dhaka. during November to March. 2005-2006 to
investigate the effect of nitrogen and seed rate on the growth. yield attributes
and yield of wheat cv. Shourav. The treatment consists of four nitrogen levels
(0. 60, 100 and 140 kg hi') and four seed rates (80, 100, 120 and 140 kg hi').
The experiment was laid out in a split-plot design with three replications.
Experiment results showed that nitrogen had significant
effect on plant height,
dry matter accumulation, crop growth rate, relative growth rate, number of total
tillers per
in2
, number of effective tillers per
7fl2•
L.) AS
spike length, number of fertile
spikelets spikc', number of unfertile spikelets spike', 1000 grain weight, grain
yield, straw yield and harvest index. The results revealed that nitrogen at the
rate of 100 kg hi' showed the best performance in all the parameters studied.
The highest grain yield (3.3 t hi') and straw yield (4.36 t hi') was obtained
from 100 kg N
had
while control treatment gave the lowest grain and straw
yield of 2.19 and 3.1 ton ha1
respectively. The grain and straw yields increased
correspondingly with the increase of N frorn C) to 100 kg hi' and decreased
thereafter. Seed rate of 120 kg ha
1 gave the highest grain yield (3.08 t hi') and
seed rate of 140 kg ha1
gave the highest straw yield (4.27 t hi') of wheat.
Among the various interactions, nitrogen at the rate of 100 kg
along with
120 kg seed ha produced the highest grain yield of 3.65 t ha
1.
