French bean is quite sensitive to weed interference, particularly during the early phases of vegetative development. The critical period for crop-weed competition in Frenchbean ranged between 28-37 days after sowing (DAS) when the crop should be kept free from weeds to prevent the potential yield losses. Thus, for the effective control of weeds throughout the crop season, use of post-emergence herbicides or their combinations is necessary. Therefore, a field investigation was conducted at the Experimental Farm of the Department of Vegetable Science and Floriculture, CSK HPKV, Palampur during Kharif, 2022 to infer about the quizalofop-ethyl and its ready to use combinations for weed management in French bean (Phaseolus vulgaris L.). The experimental site's soil was acidic, silty clay loam, medium in organic carbon, low in available nitrogen, medium in accessible phosphorus, and potassium. Eleven treatment combinations comprising of sprays of herbicides coupled with and without hand weeding were evaluated in a Randomized Block Design with three replications during Kharif, 2022. The most common weed flora identified in the experimental field was comprised of Digitaria sanguinalis (37.2%), Trifolium repens (20.4%), Cyperus rotundus (14.4%), Artimissia vulgaris (12.0%) and Alternanthera philoxeroides (15.6%). Results of the study revealed that hand weeding (twice) and pretilachlor 500 g/ha + imazethapyr 50 g/ha (pre-emergence) fb HW effectively reduced the count of weed species. Based on the results obtained from the study, it was concluded that the treatments, hand weeding (twice) and pretilachlor 500 g/ha + imazethapyr 50 g/ha (pre-emergence) fb HW were the best options for obtaining higher pod yield and management of complex weed flora in French bean.

Pretilachlor, Oxyfluorfen, Imazethapyr, Quizalofop-ethyl, French bean, Weed flora

The study's findings clearly show that the combined application of pretilachlor 500 g/ha + imazethapyr 50 g/ha (pre-emergence) fb HW and hand weeding (twice) appeared as one of the best options for complex weed flora management and obtaining higher pod yield of French bean.

Ketan, Shabnam Thakur, Sunil Kumar Gola, S.S. Rana, D.R. Chaudhary and Priyanshi Kaul (2023). Evaluation of Quizalofop-ethyl and its Ready Mix Combinations for Weed Management in French Bean (Phaseolus vulgaris L.). Biological Forum – An International Journal, 15(11): 130-135.