Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8881710 | Journal of Stored Products Research | 2018 | 4 Pages |
Abstract
The common bean Phaseolus vulgaris L. (Fabaceae) is an important vegetable protein source and constitutes a significant part of the diet in many tropical countries. The Mexican bean weevil Zabrotes subfasciatus (Boheman) (Coleoptera: Bruchidae) is one of the main pests affecting stored beans: it causes extensive qualitative and quantitative grain loss. We investigated the bioactivity of the essential oils extracted from Chenopodium ambrosioides L. (CA-EO), Ocimum gratissimum L. (OG-EO), and Schinus terebinthifolius Raddi (ST-EO) against Z. subfasciatus. After 12-h treatment, CA-EO and OG-EO at 20.0â¯Î¼L/L of air killed 100% Z. subfasciatus, whereas ST-EO at 100.0â¯Î¼L/L of air afforded 100% Z. subfasciatus mortality after 24â¯h. CA-EO provided the lowest 24â¯h LD50 (0.8â¯Î¼L/L of air) and displayed efficient repellent activity against Z. subfasciatus. Our results demonstrate that CA-EO is a potentially economical and environmentally friendly alternative to manage Z. subfasciatus in stored beans.
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Authors
Wagner A. Bernardes, Eliane O. Silva, Antônio E.M. Crotti, Edson L.L. Baldin,