Imazethapyr as post-emergent herbicide in common-bean (Phaseolus vulgaris L.) under rainfed temperate condition of Kashmir, India Rehman Ummaisa1,*, Saad A.A.1, Bhat Mohammad Anwar2, Masood Amjad1, Kanth Raihana Habib3, Saxena Amal1, Mir Aamir Hassan1, Wani Fehim Jeelani1, Bhat Mohamad Ayub1 1Sher-e-Kashmir University of Agricultural Sciences and Technology Kashmir, Sopore, Jammu & Kashmir193201, India 2Sher-e-Kashmir University of Agricultural Sciences and Technology Kashmir, Srinagar, Jammu & Kashmir190025, India 3Dryland Agriculture Research Station, Sher-e-Kashmir University of Agricultural Sciences and Technology Kashmir, Budgam, Jammu & Kashmir191132, India *Corresponding author email: ummaisarehman93@gmail.com
Online Published on 18 January, 2024. Abstract A research trial was carried out over the course of two years in Kharif (rainy) season of 2021 and 2022 at the Agronomic Research Farm of the Faculty of Agriculture, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Wadura, India to study the bio-efficacy of imazethapyr as post-emergent herbicide at 25 days after sowing to control weeds and yield of common bean. The herbicide was applied at different doses i.e. 25, 50, 75, 100 and 125 g/ha and were compared under randomized completely block design. Application of imazethapyr 75-125 g/ha remarkably decreased the weed density and the weed biomass. The growth and yield parameters were significantly higher with imazethapyr 100 g/ha and were at par to 2 manual weeding. The common bean seed yield was reduced by 67.91% and 72.11% in 2021 and 2022, respectively, due to weed infestation in weedy check plots. Maximum weed control efficiency and index was obtained with application of imazethapyr 125 g/ha. However, imazethapyr 100 to 125 g/ha resulted in considerably higher benefit: cost ratios of 2.52 (2021) and 2.7 (2022) followed by imazethapyr 75 g/ha with benefit: cost ratios of 2.45 (2021) and 2.6 (2022). The results lead to the conclusion that imazethapyr application 100 g/ha as post-emergent herbicide applied at 25 days after sowing was found efficient for weed control with economically higher seed yield of common bean. Top Keywords Common bean, Economics, Growth, Imazethapyr, Phaseolus vulgaris, Weed control efficiency, Yield. Top |