Abstract:
An experiment was carried out at Horticultural Farm in Sher-e-Bangla
Agricultural University, Dhaka-1207, Bangladesh to study the effect of
vermicompost and spacing on growth and yield of summer onion. The experiment
was carried out during summer season (March -May 2014). Two factors were used
in the experiment viz. three levels of spacing; S
1
= 10 cm× 25 cm, S
2
= 15cm ×
25cm and S
3
= 20 cm × 25 cm
and three levels of vermicompost; V
0
= 2 t ha
-1
and
V
2
= 4 t ha
-1
. The experiment was laid out in Randomized Complete
Block Design with three replications and all together with 9 treatment
combinations were used. The findings of the experiment revealed that the tallest
plant (49.6cm) was found in S
1
V
2
; the highest number of leaves plant
,the highest
dry weight of leaves plant
-1
(12.9 g), the highest bulb diameter (5.3cm), the highest
fresh weight of bulb plant
-1
= Control , V
1
-1
(44.6 g) and the highest dry weight of bulb plant
(12.6 g) was found in S
3
V
2
. But the highest length and diameter of bulb, highest
fresh weight of bulb plant
-1
and highest yield was found in. S
2
.In terms of
economic return, results also revealed that gross return, net return and highest
benefit cost ratio (BCR) was found from treatment combination of S
2
V
2
V
2
