Effect of integrated weed management on weed studies on summer groundnut (Arachis hypogaea L.) under sub-montane region of Maharashtra

Abstract

A field experiment was conducted during summer 2018 at Post Graduate Agronomy Research Farm, RCSM, College of Agriculture Kolhapur. The study was conducted with the objectives to study the effect of integrated weed management practices on weed studies on growth and yield of summer groundnut (Arachis hypogaea L.) variety KDG-123 under Sub-Montane region of Maharashtra. The experiment was laid under randomized block design (RBD) with eight treatments and three replications. The treatment weed free check recorded lowest dicot and monocot weed intensity which was followed by the treatments pre-emergence application of pendimethalin @ 1 kg a.i. ha-1 + one hand weeding at 30 DAS and pre-emergence application of pendimethalin @ 1 kg a.i. ha-1 + one hoeing at 30 DAS. The yield was found significantly highest in weed free check. The significantly highest weed control efficiency was recorded by weed free check (87.36%). However, the treatments pre-emergence application of pendimethalin @ 1 kg a.i. ha-1 + one hand weeding at 30 DAS (77.23%) and pre-emergence application of pendimethalin @ 1 kg a.i ha-1 + one hoeing at 30 DAS (75.44%) which were comparable with weed free check. The significantly lowest weed control efficiency was recorded in weedy check. At harvest the lowest weed index was recorded in weed free check and followed by the treatments pre-emergence application of pendimethalin @ 1 kg a.i. ha-1 + one hand weeding at 30 DAS (9.72%) and pre-emergence application of pendimethalin @ 1 kg a.i ha-1 + one hoeing at 30 DAS (10.32%), T2, T3, T7 and T4 and superior over weedy check. The highest weed index was recorded by the treatment weedy check (24.97%). The integrated weed management treatments pendimethalin @ 1 kg a.i ha-1 + one hand weeding at 30 DAS (T6) and pendimethalin @ 1 kg a.i ha-1 + one hand weeding at 30 DAS (T5) were found statistically at par with each other and significantly superior over rest of the treatments.