Vol. 10, Issue 7 (2021)

Author(s):
BV Jayanth, Dr. A Padmasri, Dr. T Uma maheswari and Dr. M Mohibbe Azam

Abstract:
A lab experiment was carried out at Entomology laboratory, Seed Research and Technology Centre and Central Instrumentation Cell, College of Agriculture, Rajendranagar, PJTSAU, Hyderabad to study the effect of Plant based silica products viz, amorphous silica gel @ 250 and 500 ppm, amorphous silica precipitate @ 250 and 500 ppm kg^-1 seed, paddy husk @ 1000 and 2000 ppm kg^-1 seed, paddy leaves @ 1000 and 2000 ppm kg^-1 seed and diatomaceous earth @ 300 and 600 ppm kg^-1 seed on biology of bruchid beetle beetle, Callosobruchus chinensis (Linnaeus) on chickpea during 2020-21. The experiment was laid out in completely randomized design and all the treatments were replicated thrice. Among the plant based silica products, amorphous silica gel @ 500 ppm kg^-1 seed showed superior performance over other treatments resulting in lowest fecundity (3.67 eggs 100 g^-1 seed), minimum number of seeds having eggs 100 g^-1 seed (3.33 seeds), lowest hatchability (55.57 per cent), minimum adult emergence (1.33 adults), short adult span (3.33 days) and minimum seed weight loss (0.34 per cent) and had a great promise in pest management.