Population dynamics of the phytophagous pests infesting two broad bean cultivars along with their predatory phytoseiid mites typhlodrompis swiriskii (athias-henriot) at Beheira governorate [electronic resource].

Includes references.

This study was conducted to determine the levels of infestation of two broad bean (Vicia faba) varieties with Tetranychus urticae and its predatory phytoseiid mite, Typhlodrompis swiriskii (Athias-Henriot) and some insect pests. The study was investigated the population density of two spotted spider mite Tetranychus urticae in Beheira Governorate, Egypt, during 2010-2012 on two cultivars of broad bean, Sakha 1 and Sakha3. Our results showed that the infestation of two cullivars by T. urticae was early started in 21 December) then, gradually increased and to reach their peaks during March for the two cultivars. The infestation by T. urticae during the first season was started in late December in Sakha1 cultivar only, while in Sakha3 was firstly recorded during first June 2012. The infestation was slightly increased to reach their peak during 3rd of March on the two cultivars. On the other hand, mite infestation was gradually increased reaching their peaks on March 17th for Sakhe 3. At the late season, specifically in April, the numbers of T. urticae stages decreased gradually on the two Broadbean cultivars. The predatory mite, Typhlodrompis swerskii was firstly recorded at the beginning of January for the two tested cultivars in the two successive seasons.

Summary in Arabic.

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