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VOL. 7, ISSUE 4 (2025)
Optimization of biofumigant doses for the management of pulse beetle (Callosobruchus chinensis) in green gram (Vigna radiata L.)
Authors
Varshitha K, Sangeeta I macha, Shakuntala N M, Doddagoudar S R, Sushila Nadagouda
Abstract
A laboratory experiment was conducted during 2024-25 at the Department
of Seed Science and Technology, College of Agriculture, UAS, Raichur, to
standardize the optimum doses of biofumigants in green gram (Vigna radiata
L.). The experiment was laid out in a completely randomized design with nine
treatments and three replications. Biofumigant tablets (10 g each) were
prepared using shade-dried powders of lantana and sweet flag at varying
concentrations, while tablets without biofumigants served as control. After
three days of exposure, lantana at 90% (D5) recorded the highest
insect mortality (60.00 %), and after seven days achieved complete mortality
(100 %), followed by sweet flag 90 % (D9) with 96.67 %. After one
month of storage, lantana at 90 % (D5) also showed the lowest seed
weight loss (3.22 %) and seed infestation (6.58 %), whereas the untreated
control (D1) recorded the highest seed weight loss (33.25 %) and
seed infestation (41.92 %). The results revealed that lantana tablets at 90 %
concentration were most effective in inducing complete insect mortality and
minimizing seed damage. Hence, fumigation with lantana tablets effectively
preserved seed quality by reducing insect infestation and can serve as a safe
and eco-friendly alternative to chemical fumigation.
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Pages:97-99
How to cite this article:
Varshitha K, Sangeeta I macha, Shakuntala N M, Doddagoudar S R, Sushila Nadagouda "Optimization of biofumigant doses for the management of pulse beetle (<i>Callosobruchus chinensis</i>) in green gram (<i>Vigna radiata</i> L.)". International Journal of Ecology and Environmental Sciences, Vol 7, Issue 4, 2025, Pages 97-99
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