Ramos Rodríguez, Olgaly

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    Wedelia trilobata (L.) Hitchc. (Asteraceae) como repelente de Bemisia argentifolii Bellows & Perring (Homoptera: Aleyrodidae) y de Cosmopolites sordidus Germar (Coleoptera: Curculionidae)
    (2001) Ramos Rodríguez, Olgaly; Mari Mutt, José A.; College of Arts and Sciences - Sciences; Pantoja, Alberto; Acosta, Jaime A.; Department of Biology; González, Ángel
    Laboratory experiments were conducted to understand the influence of Wedelia trilobata (L.) Hitchc. on the oviposition of Bemisia argentifolii Bellows & Perring over tomato leaves and on the presence of Cosmopolites sordidus Germar over plantain pseudostems. Solutions made with aqueous extracts of W. trilobata (100, 75, 50, 25 and 0 %) were applied to plants exposed to these insects. The extracts repelled adults of C. sordidus when applied to pieces of plantain pseudostem, but did not affect the oviposition rate of B. argentifolii when applied to tomato leaves. Field experiments using sticky traps compared whitefly abundance in plots surrounded by W. trilobata and control plots (without wedelia). No significant differences were obtained between treatments. Wedelia had no effect on whitefly abundance under field conditions.