Efeito de oleos essenciais de Eucalyptus spp. sobre abrotes subfasciatus (Boh., 1833) (Coleoptera: Bruchidae) e Callosobruchus maculatus (Fabr., 1775) (Coleoptera: Bruchidae) em duas especies de feijoes

Brito, J.; Baptistussi, R.; Funichello, M.; Oliveira, J.; D.B.rtoli, S.

Boletin de Sanidad Vegetal Plagas 4o Trimestre; 32(4): 573-580 (1)

2006


ISSN/ISBN: 0213-6910
Accession: 022482395

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Abstract
Among the pests that attack the stored grains of the beans Phaseolus vulgaris L. and Vigna unguiculata (L.) Walp., they stand out the Zabrotes subfasciatus (Mexican bean weevil) and Callosobruchus maculatus (cowpea weevil). The objective of this work was to evaluate the effects of the essential oils of Eucalyptus citriodora, Eucalyptus globulus and Eucalyptus staigeriana on the oviposition and number of emerged insects to two species of woodworms. The tests were led at laboratory to the temperature of 25±2°C. relative humidity of 60±10% and 12 hours of photophasis. In all the tests the fumigation process was used with doses of 5. 10, 15. 20 and 25 oil μl/0.0017m3, and each vegetable species was tested separately with Z. subfasciatus and C. maculatus. In those tests it was observed the total number of eggs, number of viable eggs and the number of emerged insects. The process of fumigation with essential oils of plants of the Eucalyptus sort reveals efficient in the control of Z. subfasciatus and C. maculatus, since it provokes reduction of the percentages of viable eggs and emerged insects of the two species of woodworms and the E. staigeriana oil and E. citriodora oil had the lesser percentages of viable eggs and insects emerged for the two woodworms.