Vol. 7, Issue 1 (2019)

An investigation on “Evaluation of different seed treatments for the management of soybean pests” the field experiment was conducted at research farm, Department of Agricultural Entomology, College of Agriculture, Badnapur. During Kharif season 2017. The experiment was conducted under the Randomized Block Design (RBD) with eight treatments and three replications.

The treatments comprised of imidacloprid 48 FS @1.25ml/kg seed, thiamethoxam 30 FS @ 5ml/mrl, thiamethoxam 30FS @10ml/kg seed, phorate 10 G @ 15 kg/ha, chlorpyriphos 20 EC @ 4ml/kg seed, carbosulfan 25 FS @ 30ml/kg seed, triazophos 40 EC @12.5ml/10lit (spray) and untreated control.

The experimental result indicates that the seed treatment with imidacloprid 48FS@1.25ml/kg seed was effective against the leaf miner, stem fly, girdle beetle, S. litura and C. acuta upto 30 DAG. After the spraying of triazophos 40EC @ 12.5 ml/10 lit at 30 DAG and 45 DAG it was found most effective in reducing mainly the leaf miner infestation, S. litura and C. acuta population.

The highest seed yield (2517kg/ha) was recorded in plot treated with imidacloprid 48FS@1.25 ml/kg seed followed by thiamethoxam 30 FS @ 5ml/kg seed (2344kg/ha).

An experimental result regarding Cost Benefit Ratio shows that highest ICBR was obtained in imidacloprid 48FS @ 1.25ml/kg seed (1:1.81) followed by thiamethoxam 30 FS @ 5ml/kg seed (1:1.62).