ARCHIVES
VOL. 11, ISSUE 1 (2026)
Bio-efficacy of selected botanicals, biopesticides and newer insecticides against black thrips under field condition
Authors
Shraddha Keshetti, Gangadhar Narabenchi, Byasigideri Doddabasappa, Harischandra Naik R, Anil Kumar S
Abstract
A field trial conducted at the Regional
Horticulture Research and Extension Center, Bengaluru (2023-2024), evaluated
the efficacy of botanicals, biopesticides and insecticides against Thrips
parvispinus in chilli. The experiment used a randomized block design with
ten treatments replicated three times. Treatments included Azadirachtin (1 ml L-¹),
Lecanicillium lecanii (5 g L-¹), Beauveria bassiana (5
g L-¹), Metarhizium anisopliae (5 g L-¹),
Diafenthiuron (1.25 g L-¹), Cyantraniliprole (1.8 ml L-¹),
Spinetoram (0.2 ml L-¹), Broflanilide (0.2 ml L-¹),
Thiamethoxam (0.2 g L-¹) and an untreated control. Four sprays were
applied at seven-day intervals and thrips populations were recorded by tapping
the growing tips and flowers of 10 randomly selected plants onto a white paper
board and recorded the black thrips population. Leaf curl symptoms were
assessed on 10 plants per treatment using a 0–4 visual rating scale. Results
showed Broflanilide (0.2 ml L-¹) as the most effective treatment,
reducing thrips by 74.02 per cent and achieving the lowest percentage leaf curl
index (39.65%). Beauveria bassiana (5 g L-¹) and
Cyantraniliprole (1.8 ml L-¹) also showed strong control, reducing
thrips by 59.83 per cent and 54.85 per cent, respectively. The untreated
control had the highest infestation (3.01 thrips per plant, 96.66% PLI).
Broflanilide, Beauveria bassiana and Cyantraniliprole emerged as
promising candidates for integrated pest management in chilli.
Download
Pages:128-133
How to cite this article:
Shraddha Keshetti, Gangadhar Narabenchi, Byasigideri Doddabasappa, Harischandra Naik R, Anil Kumar S "Bio-efficacy of selected botanicals, biopesticides and newer insecticides against black thrips under field condition". International Journal of Entomology Research, Vol 11, Issue 1, 2026, Pages 128-133
Download Author Certificate
Please enter the email address corresponding to this article submission to download your certificate.