Indian Journal of Agricultural Research

  • Chief EditorV. Geethalakshmi

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Indian Journal of Agricultural Research, volume 48 issue 6 (december 2014) : 488-492

EFFICACY OF POST-EMERGENCE HERBICIDE QUIZALOFOP ETHYL FOR CONTROLLING GRASSY WEEDS IN GROUNDNUT

T.K. Samant*, K.N. Mishra1
1Krishi Vigyan Kendra (OUAT) Angul-759 132, Odisha, India
Cite article:- Samant* T.K., Mishra1 K.N. (2024). EFFICACY OF POST-EMERGENCE HERBICIDE QUIZALOFOP ETHYL FOR CONTROLLING GRASSY WEEDS IN GROUNDNUT. Indian Journal of Agricultural Research. 48(6): 488-492. doi: 10.5958/0976-058X.2014.01335.3.

ABSTRACT

The post- emergence application of quizalofop ethyl @1.0 kg ha-1 at 15 DAS with one hand weeding at 25 DAS was the most effective and economical for controlling the grassy weeds in groundnut with maximum pod yield and haulm yield of 22.6 q ha-1 and 20.46 q ha-1, respectively. This treatment also minimized nitrogen, phosphorus and potash removal by weeds to a tune of 91.2, 84.1 and 89.7%, respectively over that of weedy check , resulting in better nutrient uptake by the crop. The maximum dry weed biomass at harvest was 250.3 g m-2 in weedy check followed by quizalofop ethyl @ 0.75 kg ha-1 at 25 DAS. The weed control efficiency was highest (72.3 %) in application of quizalofop ethyl @1.0 kg ha-1 with one hand weeding , which gave maximum benefit- cost ratio of 2.49 and net return of Rs.53067 ha-1 with additional income of Rs.36534
ha-1 over weedy check.

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