COMPOSIÇÃO QUÍMICA E ATIVIDADE ACARICIDA DO ÓLEO ESSENCIAL DE ERVA-DE-SANTA-MARIA SOBRE O ÁCARO-RAJADO

LAUANA PELLANDA DE SOUZA; HUGO BOLSONI ZAGO; ADILSON VIDAL COSTA; PRISCILA STINGUEL; WILSON RODRIGUES VALBON

COMPOSIÇÃO QUÍMICA E ATIVIDADE ACARICIDA DO ÓLEO ESSENCIAL DE ERVA-DE-SANTA-MARIA SOBRE O ÁCARO-RAJADO

2015

LAUANA PELLANDA DE SOUZA | HUGO BOLSONI ZAGO | ADILSON VIDAL COSTA | PRISCILA STINGUEL | WILSON RODRIGUES VALBON

This study aimed to extract, identify the chemical composition and evaluate the acaricidal acti-vity of essential oil from Chenopodium ambrosioides L. (Amaranthaceae) on Tetranychus urticae Koch (Acari: Tetranychidae). Adult female spotted spider mite were treated with concentrations 5, 10, 15, 20 and 25 μL of essential oil per liter of air. Among the eight chemical substances that make up the essential oil of C. ambrosi-oides, the (Z)-ascaridol (81.40%) was the major component. The LC50 and CL90 found after 72 h of exposure to the essential oil were, respectively, 5.82 and 10.79 μL L-1 air and fecundity of females of T. urticae was redu-ced inversely proportional to the increased concentrations utilized in this study.

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