Author(s):

CK Kundu, S Sinha, N Meena Devi, S Bandyopadhyay and MK Datta

Abstract: A Field experiment was conducted during Rabi season 2013-14 in the sub-humid and sub-tropical condition at Regional Research Station, BCKV, Chakdaha. The experiment was conducted in R.B.D with three replications compromising nine treatments viz. five different doses of 2,4-D dimethyl amine 50% SL (Nufarm) applied at 0.25,0.50,0.75,1.00 a.i. kg/ha & 2.00 a.i. kg/ha (for phytotoxicity observation), 2,4-D dimethyl amine 58% SL (Commercial)applied at 0.50 a.i. kg/ha, Metsulfuron methyl 20% WP applied at 0.004 a.i. kg/ha, Two hand weeding, unweeded control. The dominant weed flora in wheat consisted of Phalaris minor, Cynodon dactylon, Avena fatua, Cyperus rotundus, Cyperus iria, Chenopodium album, Cirsium arvense, Fumaria parviflora and Anagallis arvensis. The experimental results revealed that among the nine treatments, hand weeding twice (T₇) gave the highest grain yield (2.90 t ha-1) where as control plot gives lower grain yield (1.25 t ha-1). 2,4-D dimethyl amine 50% SL (Nufarm) @ 2.00 kg a.i. ha^-1 didn’t show any phytotoxic symptoms such as epinasty /hyponasty, leaf yellowing, necrosis, etc. & it is safe for the wheat crop.

Pages: 176-180  |  845 Views  264 Downloads

Download (379KB)