Studies on the effect of pre and post emergence herbicides on yield attributes and yield of irrigated greengram
R. Easwari1, M. Saravana Perumal1, K. Suseendran1 and B. Ananda Ganesa Raja2
1Department of Agronomy, 2Department of Entomology, Faculty of Agriculture, Annamalai University, Annamalai Nagar-608002 (India)
ABSTRACT
To assess the effectiveness of several pre and post emergence herbicides on weeds and the productivity of greengram under irrigated conditions, a field experiment was carried out in the Vadapalai village, Villupuram district, from July to September 2021. The experimental field’s weed spectrum was divided into three categories, including grasses, sedges, and broad-leaved weeds. The main sedge was Cyperus rotundus, while the grass weeds were Cyanodon dactylon, Echinochloa colona, and Dactyloctenium aegyptium. Cleome viscosa, Trianthema portulacastrum, and Phyllanthus niruri were among the broad-leaved weeds. The maximum yield of irrigated greengram were recorded after the application of Pendimethalin at 1 kg a.i. ha-1 on 3 DAS and Imazethapyr at 70 g a.i. ha-1 on 20 DAS due to increased yield attributes like maximum number of pods, number of seeds per pod which is due to decreased weed growth and weed population.