International Scientific Publications
© 2021 Science Events Ltd
Terms of Use  ·  Privacy Policy
Choose language English French Russian Bulgarian
Conference room
Agriculture & Food 2022, 10th International Conference
16-19 August, Burgas, Bulgaria
Call for Papers

Agriculture & Food, Volume 9, 2021

ANTIFEEDING AND INSECTICIDE EFFECTS OF LEAF EXTRACTS FROM CESTRUM PARQUI (SOLANACEAE) ON LARVAE OF GONIPTERUS PLATENSIS (COLEOPTERA: CURCULIONIDAE)
Amanda Huerta, Ítalo Chiffelle, Cristián Passalaqua, Tomislav Curkovic, Jaime E. Araya
Pages: 100-107
Published: 18 Sep 2021
Views: 40
Abstract: The eucalypt weevil, Gonipterus platensis Martelli (Coleoptera: Curculionidae), is a main defoliator beetle of these trees worldwide. In Chile, it occurs widely in eucalypt plantations, and there are areas where parasitoids have not adapted. The antifeeding and insecticide effect of Cestrum parqui L'Hérit (Solanaceae) aqueous leaf extracts on third instar larvae was evaluated at various concentrations (0.0, 0.6, 1.2, 2.4, and 4.8% w/v), that were applied in laboratory bioassays to fresh eucalypt leaves, with five replicates. The antifeeding effect was estimated by the foliar area consumed at 24 h. Mortality was determined daily for 11 d. For each concentration, mortality relative to the control and LC50 were determined. This extract had a high antifeeding effect at all concentrations, reaching 100% at 2.4 and 4.8% w/v. Mortality was directly related to concentration. The extract was effective as bioinsecticide, reaching 92% mortality at 4.8% w/v on day 11. The lowest LC50 was 0.87% w/v on day 7. These results indicate that this extract would constitute an efficient alternative in integrated management programs of the pest in eucalypt plantations.
Keywords: antifeeding, bioinsecticide, eucalyptus snout beetle, eucalyptus weevil, cestrum parqui
Cite this article: Amanda Huerta, Ítalo Chiffelle, Cristián Passalaqua, Tomislav Curkovic, Jaime E. Araya. ANTIFEEDING AND INSECTICIDE EFFECTS OF LEAF EXTRACTS FROM CESTRUM PARQUI (SOLANACEAE) ON LARVAE OF GONIPTERUS PLATENSIS (COLEOPTERA: CURCULIONIDAE). Journal of International Scientific Publications: Agriculture & Food 9, 100-107 (2021). https://www.scientific-publications.net/en/article/1002148/
Download full text

Back to the contents of the volume
By using this site you agree to our Privacy Policy and Terms of Use. We use cookies, including for analytics, personalisation, and ads.