Abstract:
An investigation was carried out to study the effict of spacing and sowing time on
the growth and yield of stem amaranth during March to June 2007 at Horticultural
Farm. Sher-e-Bangla Agricultural Universit, Dhaka. Four levels of spacing (S
1
20cm x 15cm. S* 20cm x 20cm. S3
r20 cm x 25 cm and S4 = 20cm x 30cm) and
three different sowing time ('l
I =.\larch
26. T2
April
U) and i
; April 25) were
used as treatment in the study. the maximum yield (77.94 (lila) was obtained from
the closest spacing (20cm x 15cm) and the minimum yield (56.33 1./11a) was
recorded from the widest spacing (20cm x 30cm). however, the yield decreased
significantly with the increased in plant spacing. (irovth and yield of stem
amaranth were signiheantly influenced by sowing lime. April 10 sowing produced
the highest yield (76.34 t/ha) of stem amaranth and March 26 had the lowest
(55.28 I/ha) yield. Considering the combined effect of" sowing time and spacing.
April 10 sowing time with the closest spacing (20cm x I 5cm) produced the highest
yield (91.45 t/ha) and the minimum yield (47.15 tfha) found in March 26 sowing
time with the widest spacing (20cm x 30cm). The highest net return ('1k.
96835/ha) was obtained from 'F1S, and the lowest net return ('1k. 13385/ha) was
recorded from 'l' S. 'the highest henelit cost ratio (2.12) was recorded front
treatment combination ol' T,S
1
and the lowest benefit cost ratio (1.16) was recorded
from the treatment combination ofTIS4 Considering the above finding, the
ion'
April sowing with 20cm x 15cm spacing was the best in yield and yield
contribUtinO characters of stem amaranth.
