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Journal of Entomological Research
Year : 2006, Volume : 30, Issue : 3
First page : ( 251) Last page : ( 254)
Print ISSN : 0378-9519.

Toxicity of essential oils against rice moth, Corcyra cephalonica Stainton in stored maize

Michaelraj S., Sharma R.K.*

Division of Entomology, Indian Agricultural Research Institute, New Delhi - 110 012, India.

*Corresponding author's. E-mail: raak@vsnl.com.

Accepted:  20  July,  2006.


Geranium oil was most effective against 10-days old larvae of Corcyra cephalonica with the lowest LD50 of 0.0891 μlcm−2 followed by lemongrass (0.1033) and peppermint (0.1044). Peppermint oil at 250 ppm (0.0127 μlcm−2) gave the maximum hatching inhibition of 89.33 per cent and in the grain treatment, the maximum mortality with no damage was observed with peppermint oil at 2.5 mlkg−1 of grains followed by 96.67 and 95.00 per cent in lemongrass and geranium at the same dose, respectively.


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