Abstract:
The experiment was conducted during the period from 19 November, 2016 to 5 April
2017 to study the effect of top cutting and supplemental management on flower
droppings, growth and yield of cowpea. The experiment was carried out by two top
cutting T
1
= Top cutting and T
2
= No top cutting and seven supplemental
managements as M
0
= Control i.e. Normal cultivation; M
1
= Urea spray before
flowering; M
2
= TSP spray before flowering; M
3
= MoP spray before flowering, M
4
=
NPK spray before flowering, M
5
= Irrigation before flowering and M
6
= Cytokinin
spray before flowering on cowpea. The experiment was laid out in split-plot design
with three replications. Data on different growth parameters, yield attributes and yield
were significantly varied for different parameters. The highest dry weight (25.58 g
plant
-1
) and higher pod remaining (42.36%) was found from the top cutting of cowpea
whereas, 1000-seed weight (117.17 g) and seed yield (1.51 t ha
-1
) in no top cutting of
cowpea. The supplemental application of MoP (M
3
) before flowering stage resulted
higher dry weight plant
-1
(30.83 g) and seeds pod
-1
(12.70) from irrigation (M
5
) before
flowering. The highest seed yield (1.84 t ha
-1
) was given by supplemental TSP (M
2
)
spray before flowering. The highest flower (67.41%) was revealed in T
1
(top
cutting with supplemental irrigation before flowering) and the highest pod droppings
(33.68%) was attained in T
0
M
0
(no top cutting with control; normal cultivation).
Supplemental application of NPK gave the lowest total dropping (41.15%). Top
cutting with application of TSP before flowering resulted the highest seed yield (1.98
t ha
-1
). The lowest seed yield (0.96 t ha
-1
) was found in top cutting with supplemental
MoP spray during reproductive phase.
Description:
A Thesis
Submitted to the Faculty of Agriculture,
Sher-e-Bangla Agricultural University, Dhaka,
in partial fulfilment of the requirements
for the degree of
MASTER OF SCIENCE (MS)
IN
AGRONOMY
