Population dynamics and relative susceptibility of cucumber and tomato varieties to Bemisia tabaci (Genn.) under glasshouse condition [electronic resource].

Includes references.

The population dynamics and the relative susceptibility to the white fly Bemisia tabaci (Genn.) on cucumber and tomato varieties were studied under the glasshouse condition, at faculty of agriculture, Al-Azhar University, for one successive season in 2001-2002 year. Data obtained cleared that Bemisia tabaci nymphs showed two peaks on cucumber plants and one peak on tomato plants. Cucumber peaks occurred in 17th of March and 21st of April while tomato peak occurred in 31st of March. Data also revealed that the cucumber varieties differed in infestation by Bemisia tabaci. The variety Sakata harbored higher mean numbers of nymphs followed by Hybrid select and Beta alfa varieties. Tomato varieties showed a significant difference between each of "Castle rock" and "Broad star" and "Super murmond" varieties in their infestation by the insect pest. Cucumber varieties ·mounted a higher mean numbers than tomato varieties under

Summary in Arabic.

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