| Autor: |
ANANDHABHAIRAVI, N., SHANTHI, M., CHINNIAH, C., GEETHA, R., VELLAIKUMAR, S. |
| Předmět: |
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| Zdroj: |
Indian Journal of Entomology; Jun2022, Vol. 84 Issue 2, p368-372, 5p |
| Abstrakt: |
Hexane extracts of certain botanicals were evaluated in the laboratory for their oral, contact, fumigant toxicity and repellent activity at 5% concentration against rice weevil Sitophilus oryzae L. at the Natural Pesticide Laboratory, Department of Agricultural Entomology, Agricultural College and Research Institute, Madurai, Tamil Nadu during 2019-2021. The results revealed that all the botanicals were effective. Considering the contact toxicity, 5% hexane extract of Mentha spicata 5% (80.00%) performed better at 72 hr after treatment. M. spicata and Vitexnegundo 5% hexane extract exhibited maximum oral toxicity (90.00%). Fumigant effect was maximum in V. negundo (73.33%), M. spicata, Ocimum sanctum and Tagetes erecta flower extracts (70.00%). Ocimum sanctum (70.56%) and M. spicata (67.22%) exhibited maximum repellency. Thus, M. spicata at 5% was the most effective as contact, oral, fumigant toxicant and repellent against S. oryzae in stored maize. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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