Efficacy of predatory phytoseiid mites and biopesticides for controlling tetranychus urticae (Acari : Tetranychidae)‎ infesting phaseolus vulgaris

الملخص EN

The kidney bean Phaseolus vulgaris L.

is one of the most important economic vegetable crops cultivated in Egypt and many countries of the world as a main source of protein.

This study dealt with the efficiency of two predatory phytoseiid mites, Phytoseiulus persimilis Athias-Henriot, Typhlodromips swirskii (Athias- Henriot) (Acari: Phytoseiidae); fungal pathogen Beauveria bassiana (Balsamo) and the biopesticide Abamectin 1.8 EC.

+ mineral oil Cable against the eggs, immature and adults of Tetranychus urticae Koch (Acari: Tetranychidae) infesting two cultivars of both P.

vulgaris (Hama and Bolista) under net house conditions at Beheira Governorate during 2016 season.

Highly reduction percentage was achieved by the predatory mite P.

persimilis, the biopesticide Abamectin 1.8 EC.

+ mineral oil Cable and fungal pathogen B.bassiana , followed by the other predatory mite T.

swirskii when compared with the untreated plants.

Also, the results indicated that accarine pests are only a part of biological complex of which predacious mites, particularly phytoseiid group, could be of value in checking infestations.