Abstract:
A held experiment was conducted at Sher-e-Bangla Agricultural University. Dhaka
during December, 2013 to March,2014 with a view to fmd out the influence of irrigation
and weed control method on the growth and yield of Soybean cv. BAR! Soybean 6.The
experiment was carried out with four(4) irrigation treatments viz, no irrigation (control),
one time(at 20 DAS,two times (at 20 and 40 DAS), three times (at 20. 40, and 60 DAS),
and Ibur weed management treatments i.e., no weeding (control), one time hand
weeding(at 20 DAS). two times hand weeding (at 20 and 40 DAS) and chemical control
by Whip Super® (Fenoxaprop-p-ethyl)0j75g ha at 20 DAS. Results showed different
types of weed werefound to infest experimental fields, among them
Ec/zinocii/va co/onuin
(72. 19%). Lindernia procumbens (28.28%) and
Gynodon dacty/on (14.25%) had the
highest relative density. It is also noticed that Lindernia procumbens created dominancy
throughout the crop growth period even at the later stage of crop. 'three times irrigation
(13) gave the highest (1.628 t had) seed yield on the other hand two times hand weeding
(Wz) gave the highest
(1.556 t ha") seed yield. Interaction effects showed the highest
(1.917 t ha") seed yield from the combination of three times irrigation andtwo times hand
weeding (13W2). This was also observed that herbicide Whip Super® showed better
performance to control grass weeds but failed to control Lindernia procumbens.
However, crop plants treated with herbicide became mature one week earlier than other
treated crop plants. Considering weed control method of herbicide Whip Super®mav be
most economic for cultivation of soybean.
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