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 efficacy of sixteen grain protectants @ 5% was compared against Sitophilus oryzae in storage. Adult weevils were exposed to the paddy, wheat and maize grains treated with the protectants. The mortality was recorded at 1, 2, 7, 14, 21 and 28 days of exposure. Subsequently, all adults were removed and the treated grains remained at the same condition for 56 days. After this interval, the F1 adult female progeny was counted. The protectants caused equally higher insect mortality on paddy and maize grain at 1 day of application. At 28 days mortality was highest in paddy grains. The protectants like camphor, coconut oil and malathion 50 EC caused complete mortality of the insect in 7 days of treatment. The inhibition rate was highest with camphor; cow dung ash and clove oil indicate lower level of F1 female. The rate was lowest on custard apple and nishinda leaf powder suggesting higher F1 adult progeny. The seed weight loss was highest in wheat. The seed weight loss was highest with custard apple and bay leaf powder and lowest on malathion 50 EC, camphor, coconut oil and tobacco leaf powder. The weight loss was moderate with karanja and neem leaf powder.
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