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RELEASE DIFFERENT LEVELS OF PHYTOSEIULUS MACROPILIS (BANKS) AND NEOSEIULUS CALIFORNICUS (MCGREGOR )ON WATERMELON PLANTS TO CONTROL THE TWO-SPOTTED SPIDR MITE, TETRANYCHUS URTICAE (ACARI:PHYTOSEIIDAE & TETRANYCHIDAE) E
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Abstract: An area of about one feddan (about 4200 m2) at El-Mahala El-Kobra district (El-Gharbia Governorate). was chosen to study the effective of the two predatory mites, Phytoseiulus macropilis (Banks) and Neoseiulus ( Amblyseius ) californicus (McGregor ) on the two-spotted spider mite, Tetranychus urticae Koch infested watermelon. The predator individuals were released in each predator's area, once or twice (at two weeks intervals), at the rate of 3, 6 and 9 individuals/2plants.The obtained results indicated that single release of P. macropilis gave high reductions for the red spider mite, T. urticae population comparing with those of N. californicus during the different post-counts.
Double release of the predatory mite, P. macropilis was the best for reducing the red spider mite population , this may be due to the behavior of the predatory, mite P. macropilis which is known to be specific predator of spider mite and the nature of N. californicus which is known to be a generalist predator, which does not exhibit an equally strong numerical and functional response towards spider mites as prey specialist.
One release of the predatory mite, N. californicus with the medium rate (6 predators/2 plants) or low rate {3 predators /2 plants) , as well as releasing the predator two releases with the low rate resulted in low mite population reduction.
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| Publication year |
2009
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| Pages |
11-22
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| Organization Name |
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| Author(s) from ARC |
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| External authors (outside ARC) |
مصطفى حلمي موافي
كلية الزراعة – جامعة الأزهر
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| Publication Type |
Researsh & Applied Activities
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