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Efficacy of essential oils against American cockroach (Paperback)
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Efficacy of essential oils against American cockroach (Paperback)
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The toxicity, repellency and fumigant activity of three essential
oils were evaluated against the Periplaneta americana (L.) under
laboratory conditions. The essential oil of C. citratus exhibited
complete repellency (up to 100%) against P. americana using
different concentration (4, 5, 6 and 7%) after 24 hours. LC50 value
for C. citratus is 8.013, 7.050, 4.897 and 3.391 at 2, 4, 6 and 24
hours. Fumigant activity ranging from 70-100% was observed using
C.citratus under laboratory conditions against P. americana.
Satisfactory toxicity 10-100% was found using Mentha arvensis at
different concentrations between different time interval (2-24
hours). In case of M.arvensis LC50 value for contact toxicity is
8.122, 8.013, 6.004 and 4.640 after 2,4, 6 and 24 hours. Fumigation
value ranges from 50-80% was seen in case of M.arvensis at
different concentrations. Least toxicity, repellency and fumigant
activity was observed in case of Eucalyptus citrodora. %age
mortality from 0-80% was achieved between 2-24hours at different
concentrations. LC50 value is 8.268, 10.292, 7.050 and 4.814 after
2, 4, 6 and 24 hours. 40-60% fumigant activity was observed after
24 hours at different concentrations.
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