Insecticide activity of Copaifera langsdorffii oil in Aphis craccivora (Hemiptera: Aphididae)

IF 0.6 4区农林科学

BOSQUE Pub Date : 2022-04-01 DOI:10.4067/s0717-92002022000100051

Camila Guisse Pereira, Laura Araujo Sanches, Guilherme Timo Mascarenhas, J. Garlet, Muriel Da Silva Folli Pereira

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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 (LC 50 ). 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 LC 50 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 . 72 horas). La CL 50 calculada a las 4, 24, 48 y 72 horas fue del 6,16 %, 4,65 %, 4,22 % y 2,99 %, respectivamente. El aceite de copaiba tiene actividad insecticida y una concentración del 6 % está indicado para el control de Aphis craccivora . natural.

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狼蛛油对卡氏蚜的杀虫活性（半翅目：蚜科）

本研究在室内条件下，评价了黄花蒿油对小蚜虫的杀虫活性。采用完全随机试验设计，5种浓度分别为2%、4%、6%、8%和10%，空白试验处理(蒸馏水+ Tween®)和对照(Orthene®)。在评价中，将不同浓度的油与水混合后分别施用于1 mL的克拉蚜和黄纹蚜成虫。死亡率(%)是用于分析的变量，通过方差分析和中位致死浓度(lc50)的测定，在应用处理后4、24、48和72小时进行评估。结果表明，随着浓度的增加，斑腹蚜的死亡率呈上升趋势，当浓度为10%时，4 h和24 h的死亡率较高(分别为88%和90%);当浓度为6%时，斑腹蚜的死亡率为80% ~ 94% (48 h后)和92% ~ 98% (72 h后)。4、24、48、72 h的lc50分别为:6.16%、4.65%、4.22%、2.99%。Copaiba精油具有一定的杀虫活性，浓度为6%时，可用于防治黑蚜。72小时)。lcl50计算值分别为4、24、48和72，分别为6、16%、4、65%、4、22%和2、99%。黄斑蚜虫活性杀虫剂的研究进展concentración . 6 % estest对黄斑蚜虫的防治。自然。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

BOSQUE Agricultural and Biological Sciences-Forestry

CiteScore

0.70

自引率

0.00%

发文量

期刊介绍： BOSQUE publishes original works in the field of management and production of forestry resources, wood science and technology, silviculture, forestry ecology, natural resources conservation, and rural development associated with forest ecosystems. Contributions may be articles, rewiews, notes or opinions, Either in Spanish or English.