WAHBA, B. (2015). THE IMPACT OF CHEMICAL AND BIOLOGICAL CONTROL FOR COMMON BEAN PESTS, TETRANYCHUS URTICAE &T.CUCRBITACEARUM. Egyptian Journal of Agricultural Research, 93(2), 421-432. doi: 10.21608/ejar.2015.154415
BASEM S. WAHBA. "THE IMPACT OF CHEMICAL AND BIOLOGICAL CONTROL FOR COMMON BEAN PESTS, TETRANYCHUS URTICAE &T.CUCRBITACEARUM". Egyptian Journal of Agricultural Research, 93, 2, 2015, 421-432. doi: 10.21608/ejar.2015.154415
WAHBA, B. (2015). 'THE IMPACT OF CHEMICAL AND BIOLOGICAL CONTROL FOR COMMON BEAN PESTS, TETRANYCHUS URTICAE &T.CUCRBITACEARUM', Egyptian Journal of Agricultural Research, 93(2), pp. 421-432. doi: 10.21608/ejar.2015.154415
WAHBA, B. THE IMPACT OF CHEMICAL AND BIOLOGICAL CONTROL FOR COMMON BEAN PESTS, TETRANYCHUS URTICAE &T.CUCRBITACEARUM. Egyptian Journal of Agricultural Research, 2015; 93(2): 421-432. doi: 10.21608/ejar.2015.154415
THE IMPACT OF CHEMICAL AND BIOLOGICAL CONTROL FOR COMMON BEAN PESTS, TETRANYCHUS URTICAE &T.CUCRBITACEARUM
Plant Protection Research Institute, ARC, Dokki, Giza, Egypt.
Abstract
field studies were carried out to determine the effect of two pesticides, Ortus &Kanemite and also two predacious mites released, Phytoseiulus persimilis (Athias–Henriot) and Amblyseius gossypii ( El-Badry) against the phytophagous mites, Tetranychus urticae Koch, and T.cucurbitacearum (Sayed) which attack common beans,paulista variety in Hoticultural Research Station in Al Kanater El- Khairiya, Qualiobeya Governorate throughout 2012 and 2013 seasons.The application of the acaricide, Kanemite shown better than the other,ortus to reduce the population density of the spider mite,T. urticae, eggs and mobile stages throughout two seasons,2012 and 2013 by occurance higher reduction percent to eggs and mobil stages. This result led to having green pods yield higher for kanemite treatment than ortus treatment in the previous mentioned seasons.The application of acaricides, kanemite and ortus contributed better effect than check to control two species of spider mites. The predators were released by bean leaflets harboring the predator individuals. The predator, P. persimilis had a higher effect comparing to the second predator, A. gossypii .This is reversed on the yield by occurance green pods yield higher for the treatment, P.persimilis than the other treatment,A.gossypii throughout 2012 and 2013 seasons. The release of P. persimilis and A. gossypii revealed better effect than the check to the phytophagous mites, Tetranychus urticae Koch, and T.cucurbitacearum (Sayed).
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