Effect of oil sprays on sweetpotato whitefly and phytotoxicity on watermelons, squash and cucumbers

Sweetpotato whitefly, Bemisia tabaci (Gennadius) (SPW), control and plant leaf phytotoxic effects with plant-derived oils were evaluated on watermelon, Citrullus lanatus (Thunb.) Matsum. and Nakai var. Lanatus, squash, Curcurbita pepo L., and cucumber, Cucumis sativus L., cultivars. One or two appli...

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Bibliographic Details
Published inThe Southwestern entomologist Vol. 16; no. 1; pp. 63 - 72
Main Authors Butler, G.D. Jr, Henneberry, T.J
Format Journal Article
LanguageEnglish
Published 1991
Subjects
Bemisia tabaci
Citrullus lanatus
Cucumis sativus
Cucurbita pepo
insect control
leaves
phytotoxicity
plant fats and oils
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Summary:Sweetpotato whitefly, Bemisia tabaci (Gennadius) (SPW), control and plant leaf phytotoxic effects with plant-derived oils were evaluated on watermelon, Citrullus lanatus (Thunb.) Matsum. and Nakai var. Lanatus, squash, Curcurbita pepo L., and cucumber, Cucumis sativus L., cultivars. One or two applications of water solutions of 1 to 2% of the oils repelled or killed adults and immature SPW up to 7 days following application. Reduced numbers of immature forms occurred because of the combination of reduced numbers of adults and insecticidal activity of the oils. In most cases minimal or no plant leaf phytotoxicitywas caused by applying 1 or 2% of the oils, but rates of 5% usually caused identifiable plant leaf phytotoxicity.
ISSN:0147-1724
2162-2647