National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
The plant oils and extracts viz., neem oil, mustard oil, castor oil and neem seed kernel extract each at three concentrations (5.0, 7.5 and 10%) and an insecticide check malathion (0.05 and 0.1%) were evaluated by impregnating the gunny bags against Corcyra cephalonica Stainton (Lepidoptera: Galleriidae). The adult emergence, grain damage and weight loss were recorded after 270 days of storage pearlmillet, Pennisetum glaucum (Linn.). The adult emergence decrease with the increase in the concentration of test plant oils. Among the plant oils and extracts, the mean adult emergence (1.50 adults) was observed in NSKE followed by neem oil (2.25 adults), mustard oil (2.84 adults) and castor oil (3.84 adults) 10.0 per cent dose. In NSKE and neem oil, the adult emergence was decreased with increase in concentration. The mean per cent grain damage and weight loss also decreased with the increase in concentration of plant oils and extracts. Among the plant oils and extracts, the mean grain damage (3.17%) and weight loss (1.50%) were observed in NSKE 10.0 per cent followed by neem oil (4.34%) and (1.83%), respectively. With regards to malathion, very low adult emergence, grain damage and weight loss were observed. All the plant oils and extracts found significantly superior over the untreated control. Among the plant oils and extracts the NSKE and neem oil were the best treatments for impregnation of gunny bags having minimum adult emergence, grain damage and weight loss while mustard oil and castor oil were the least effective.
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