Abstract:
An experiment was carried out in experimental field of the Sher-e-E3angla
Agricultural University. Dhaka to investigate the performance of wheat as
affected by inie of irrigation and nitrogen level during the winter season of
2009-2010. Five times of irrigation
viz, one irrigation at crown root initiation
(('RI) stage. one irrigation at maximum tillering stage. one irrigation at grain
tilling stage, two in'igations at CR! - maximum tillering stage and three
irrigations at CR1 - maximum tillering F grain Idling stage: and four levels of
nitrogen viz. 92kg ha". 115kg ha
d
. 138kg ha" and 161kg ha' were used as
variables. The experiment was laid out in a split plot design with three
replications. Results showed that time of irrigation and nitrogen level had
significant effect on different plant characters, yield and yield components of
wheat. When irrigation was applied 3 times at ('RI - maximum tillering
filling stage, various plant characters including yield and yield attributes-plant
height. spike length. number of productive tillers plant'. number of effective
spikes
ii12.
dry weight plant'. number of spikelets spike
- '. number of grains
spike", weight of 1000 seeds.grain yield. straw yield and harvest index had
maximum values. On the other hand, when the plant characters-plant height
and spike length were highest with 161kg N ha'', the yield and yield
contributing characters-number of productive tillers plant'', number of effective
spikes nf
2
. dry weight plant'. number of spikelets spike', number of grains
spike'.
weight of 1000 seeds, grain yield, straw yield and harvest index were
highest with 115kg N ha'. Signif icantly. highest yield of wheat was obtained
when irrigation was applied 3 times at CR1 - maximum I illering grain tilling
stage along with the recommended nitrogen dose of 115kg ha".
