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VOL. 8, ISSUE 2 (2026)
Efficacy of Neemastra against mustard aphid Lipaphis Erysimi (Kaltenbach)
Authors
P C Yadav, M L Tetarwal, R P S Jetawat, Ashok Singh, Rohit Sarvate
Abstract
A field experiment was conducted at the Krishi
Vigyan Kendra (KVK) Bamanwara (Jalore-II) during the rabi season to
record the efficacy of Neemastra against mustard aphid (L. erysimi).
Different doses of Neemastra with seven treatments were applied during the
investigation against the mustard aphid. Two foliar sprays were applied during
the evening hours at 15-day intervals, from the initial appearance of aphids on
the mustard crop. The results revealed that treatments T4 (Neemastra @ 50
ml/litre of water) and T3 (Neemastra @ 40 ml/litre of water) were most
effective, with 52.99, 32.99, 16.99 and 50.33, 30.33, 15.66 aphid population
upper 10 cm twig on randomly selected plants at 3,7 and 10 days after spray
during the first sprays, respectively. While aphid populations during the
second spray in the above treatments were 42.33, 26.99, 13.99, and 40.66,
24.66, 12.33 aphids/10 cm twig in selected plants. Treatments T5 and T6 also
showed significant reductions in pest populations; however, their efficacy was
lower compared to T4 and T3. In contrast, treatments T1 (Neemastra @ 20
ml/litre) and T2 (Neemastra @ 30 ml/litre) exhibited the minimum reduction in
aphid population with 78.33, 45.33, 30.99 and 69.66,40.66, 20.33 per 10 cm twig
in each randomly selected plant were found to be comparatively less effective
than the remaining treatments.
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Pages:160-162
How to cite this article:
P C Yadav, M L Tetarwal, R P S Jetawat, Ashok Singh, Rohit Sarvate "Efficacy of Neemastra against mustard aphid <i>Lipaphis Erysimi</i> (Kaltenbach)". International Journal of Agriculture and Plant Science, Vol 8, Issue 2, 2026, Pages 160-162
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