Vol. 12 No. 3
Evaluation of bio-efficacy of 2, 4-D Ethyl Ester 38 per cent EC for weed control in wheat
Author(s): U. BISWAS, C. K. KUNDU, A. KUNDU, S. MONDAL, T. BISWAS and MD. HEDAYETULLAH
Abstract: The experiment was conducted during rabi season at the research farm of Bidhan Chandra Krishi Viswavidyalaya attached to the Regional Research Station, Chakdaha, Nadia, of West Bengal to evaluate the bio-efficacy of 2, 4-D Ethyl Ester 38 % EC in wheat. Eight different weed control treatments - four different doses of 2, 4-D EE 38 % EC (Nufarm) applied at 0.225, 0.450, 0.675 and 0.900 kg a.i. ha-1; with four other treatments, viz., 2, 4-D EE 38 % EC (Commercial) at 0.450 kg a.i. ha-1; metsulfuron methyl 20 % WP at 0.004 kg a.i. ha-1; hand weeding twice at 25 and 45 DAS and unwedded control. The experiment was laid out in a Randomized Block Design (RBD) replicated thrice. Post emergence application of 2, 4-D EE 38 % EC (Nufarm) @ 0.900 kg a.i. ha-1 and 2, 4-D EE 38 % EC (Nufarm) @ 0.675 kg a.i. ha-1 resulted in effective weed control recording the least weed density and weed dry weight. Maximum grain yield was recorded under hand weeding treatment followed by 2, 4-D EE 38 % EC (Nufarm) @ 0.900 kg a.i. ha-1 as post emergence application.
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