Abstract:
The study was conducted in the farm of Shcr-e-Bangla Agricultural University.
Dhaka, during the period from March to June 2007. The experiment consisted
of two flictors. Factor A: Four levels of sowing time; S
1
: 20 March, S2: 30
March, S3
: 09 April and 54
: 19 April; Factor B: Four levels of potassium
fertilizer; K0: 0 kg K
2
0/ha (control), K1 : 130 kg K
20/ha. K
2: 140 kg K
20/ha
and K3: 150 Kg K
2
0/ha.The experiment was laid out in randomized complete
block design (RCBD) with three replications. In case of sowing time. S.
produced the maximum plant height (84.09 cm) and yield (62.12 t/ha), while S
produced the minimum plant height (80.64 cm) and S
1 minimum yield (54.91
t/ha). For potassium, K3
produced the longest plant (81.69cm) and highest yield
(67.11 t/ha) while K
0
produced the shortest plant (63.10cm) and lowest yield
(44.72 t/ha). For combined effect. S
3K3
produced the maximum plant height
(99.43 cm) and S3K2
produced the maximum yield (71.78 t/ha) while S
3K0
produced the shortest plant
(54.43
cm) and the minimum yield (40.71 t/ha).
The highest benefit cost ratio obtained from S
3K2
(3.41). It may therefore be
concluded that the 09April sowing with application of 140 kg K
20/ha is
suitable combination (hr better growth and yield of stem amaranth.
