Abstract:
An experiment was conducted at the Sher-e-Bangla Agricultural University
farm. Dhaka to study the influence of integrated nitrogen and irrigation
managements on the growth parameters and yield of lentil
(Letis culinaris) cv.
BAR! mashur-4 during the period from November 2006 to March 2007. The
trial comprised of ten treatments as T
1
= no fertilizer and no irrigation
(control). Ti = 20 kg N ha
S'
as basal without irrigation, T3
= 20 kg N ha4 as
basal with one irrigation at flower initiation stage,
'14
= 30 kg N haS' as basal
without irrigation
= 30 kg N ha" as basal with one irrigation at flower
initiation stage. T
6 = 40 kg N ha4
as basal without irrigation, T7 = 40 kg N ha
4
as basal with one irrigation at flower initiation stage, T= 10kg N hi' as basal
and 10 kg N hi' as split with one irrigation at flower initiation stage. T
9
= 15
kg N ha4
as basal and 15 kg N hi' as split with one irrigation at flower
initiation stage and T
10 = 20 kg N ha1
as basal and 20 kg N hi' as split with
one irrigation at flower initiation stage. Irrespective of treatment differences
the lentil plant as a pulse crop showed a lag phase in early growth stage (up to
25 DAS) produced growth parameters like number of leaves, leaf dry weight
and stein dry weight per plant. Application of 20 kg N ha" as basal with 20 kg
N hi' as split application with one irrigation at flower initiation stage
(55
DAS) of lentil improved the growth parameters significantly. Maximum dry
matter eventually supported the plant to produce more number of branches and
pods per plant, which resulted in maximum seed yield per heetare. A functional
positive relationship was observed among number of branches per plant, pods
per plant, seeds per pod and seed yield.
