Journal of Biopesticide

Journal of Biopesticide

2010, Vol. 3, Issue1

EFFICACY OF SOME BIOPESTICIDES AND ECOFRIENDLY PRACTICES FOR THE MANAGEMENT OF FIG MOTH, EPHESTIA CAUTELLA (WALKER) (LEPIDOPTERA: PHYTICIDAE) IN STORED SUNFLOWER


AUTHOR(S)
K. M. Kumaranag, K. S. Jagadish* and Y. G. Shadakshari

ABSTRACT

The fig moth, Ephestia cautella (Walker) is a major storage of stored sunflower. Different biopesticides and eco-friendly practices were evaluated for their bioefficacy against this pest. Sunflower seeds treated with neem seed kernel powder and malathion + thiram showed higher mortality of 50.39 per cent and 100 per cent, respectively, after 24 hrs after the first larval release, while the remaining larvae showed symptoms of dying, lack of movement and responded very weakly to pricking. A gradual increase in the level of mortality was observed in all the treatments with the time lapse of 72 hrs after first release, when seeds that were subjected to malathion + thiram, sanitation and neem seed kernel powder showed 100, 93.34and 91.67 per cent mortality, respectively. The loss in the weight of sunflower seeds was highest in case of extended sun drying. Maximum adult emergence after first larval release was noticed in case of extended sun drying. After the second larval release, made at 45 days after treatment, maximum mortality was recorded in case of seeds treated with malathion + thiram (95.25 %) and sand layer (46.67%), but at the end of 72 hrs, 100 and 91.67 per cent mortality was recorded in case of malathion + thiram and sanitation, respectively .However, after the second larval release, maximum weight loss of seeds was recorded in case of extended sun drying (1.34%), with an adult emergence of 31.67 per cent . At 72 hrs after the third release of the larvae at 90 days after treatment, sanitation recorded 91.67 per cent mortality, which was on par with that of malathion + thiram (100%), while the pest mortalities that was observed both in case of seeds treated with sand layer and neem kernel powder was 81.67 per cent. The maximum weight loss was observed in case of extended sun drying (1.50%) with 20 per cent adult emergence.


DOI
https://doi.org/10.57182/jbiopestic.3.1.330 - 332

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