2024, Vol. 7, Special Issue 9

author(s)
Ritika and Jay Nath Patel

abstract
A field study was conducted during kharif of 2023 at Research farm, School of Agriculture, Abhilashi University, Mandi, Himachal Pradesh to evaluate the effect of weed management practices on weeds in soybean crop. The experiment was laid out in randomized block design (RBD) with three replications comprising of eight weed management treatments viz.- T1= Weedy check, T2= Weed free, T3= Hand weeding at 25 & 45 DAS, T4= Fluchloralin @1.0 kg a.i. ha-1 (PE), T5= Pendimethalin @1.5 kg a.i. ha-1 (PE), T6= Imazethapyr @100 g a.i. ha-1 (PE), T7= Quizalofop-ethyl @50 g a.i. ha-1 (PoE) and T8= Pendimethalin @0.75 g a.i. ha-1 + Imazethapyr @75 g a.i. ha-1 (PE). Application of weed free treatment (T2) recorded significantly minimum count and dry matter of total weeds at 30, 60 and 90 DAS stage of soybean crop, which was significantly superior than all the other treatments at all the growth stages. The maximum weed control efficiency at every stage of soybean crop was also noted under treatment T2. However, among the different herbicides, the application of Pendimethalin @0.75 kg a.i. ha-1+ Imazethapyr @75 g a.i. ha-1 (PE) found the minimumcount and dry matter of total weeds and higher weed control efficiency at all stages of soybean crop. Whereas, the maximum count of total weeds, dry matter of total weeds and lowest weed control efficiency at 30, 60 and 90 DAS stages of soybean crop were observed under weedy check treatment (T1) during field study.