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VOL. 11, ISSUE 1 (2026)
Bio-efficacy of entomopathogenic fungi against onion thrips (Thrips tabaci) under field conditions
Authors
Savde V G, Zambare V P, Kadam D R, Bhamare V K, Bajad A R
Abstract
A field experiment was conducted to study the bio-efficacy of
entomopathogenic fungus against onion thrips (Thrips tabaci) under field
conditions. Treatments included Beauveria bassiana, Lecanicillium
lecanii (formerly Verticillium lecanii), Metarhizium anisopliae,
combinations of fungal agents with a sticker (non-ionic surfactant), and a
chemical check (Spinetoram 11.7% SC @ 75 ml/ha). Thrips populations were
recorded at 3, 7, and 10 days after each of three sequential sprays, and
results were expressed as mean number of thrips per 10 plants. The chemical
insecticide Spinetoram was most effective treatment, with mean thrips
population of 0.91 and 94.84% reduction over control, among the biocontrol
agents, the tank mix of L. lecanii and B. bassiana with sticker
recorded the highest efficacy, reducing thrips population to a mean of 2.17
with 87.64% reduction over control. The addition of a sticker showed to enhance
the performance of fungal formulations. All the treatments showed significant
reduction in thrips population over control the combination of B. bassiana
and L. lecanii was more effective over any fungal insecticide. The least
effective treatment was M. anisopliae alone which recorded only 43.52%
control. These findings suggest that fungal entomopathogens when used in a
combination with a sticker, offer promising alternatives to synthetic
insecticides for sustainable thrips management in onion cultivation.
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Pages:10-13
How to cite this article:
Savde V G, Zambare V P, Kadam D R, Bhamare V K, Bajad A R "Bio-efficacy of entomopathogenic fungi against onion thrips (<i>Thrips tabaci</i>) under field conditions". International Journal of Entomology Research, Vol 11, Issue 1, 2026, Pages 10-13
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