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- Title
Insecticide activity of Copaifera langsdorffii oil in Aphis craccivora (Hemiptera: Aphididae).
- Authors
Guisse Pereira, Camila; Araujo Sanches, Laura; Timo Mascarenhas, Guilherme; Garlet, Juliana; Folli-Pereira, Muriel Da Silva
- Abstract
In this study, the insecticide activity of Copaifera langsdorffii oil in the control of Aphis craccivora was evaluated under laboratory conditions. A completely randomized experimental design was used, with five concentrations of 2 %, 4 %, 6 %, 8 % and 10 %, blank test treatment (distilled water + Tween®) and control (Orthene®). In the evaluation, adults of Aphis craccivora and Gliricidia sepium were exposed to the application of 1 mL of the water mixture with different concentrations of oil. Mortality (%) was the variable used for the analysis, being evaluated at 4, 24, 48 and 72 hours after application of the treatments through the analysis of variance and determination of the median lethal concentration (LC50). It was observed that with the increase in concentrations there was increase in the mortality of Aphis craccivora, with higher mortality in the concentration of 10 % in the periods of 4 and 24 hours (88 % and 90 %) and from 6 %, with mortality ranging from 80 to 94 % (after 48 hours) and 92 to 98 % (after 72 hours). The LC50 calculated at times of 4, 24, 48 and 72 hours was: 6.16 %, 4.65 %, 4.22 % and 2.99 %, respectively. Copaiba oil has insecticidal activity and concentration of 6 % can be indicated for the control of Aphis craccivora.
- Subjects
APHIDS; INSECTICIDES; HEMIPTERA; DISTILLED water; ANALYSIS of variance; PETROLEUM
- Publication
Bosque (03048799), 2022, Vol 43, Issue 1, p51
- ISSN
0304-8799
- Publication type
Article
- DOI
10.4067/S0717-92002022000100051