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Biological control of Tetranychus urticae Koch in strawberries open fields and greenhouses by releasing Phytoseiulus macropilis (Banks) Koch. (Acari : Tetranychidae - Phytosciidae)
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Abstract: Biological control of Tetranychus urticae Koch (Acari: Tetranychidae) on strawberries by releasing the predatory mite, Phytoseiulus macropilis (Banks) (Acari:Phytoseiidae), at arate of about of 5 individuals /bit (i.e.100000 predators/feddan).More experiment were carried out in Ismailia Governorate for releasing the predator to control the T. urticae populationin plastic greenhouses and also release the predator in an open field with the rate of about 3 individuals /bit (i.e.60000 predators/feddan).The percent reduction of T. urticae population reached more than 90% after sixth or seventh weeks of release .However, the pest and predator densities showed a tendency to increase in the greenhouse than those in open fields which could be attributed to the warmer temperature inside the greenhouse .The minimal release of the predator could maintain the pest population under relatively low level,yet the two-spotted spider mite outbreaks area s (hot spots were occasionally be done .Results indicated the possibility of controlling the two-spotted spider mite, T. urticae on strawberries in open fields and plastic greenhouses by releasing the predatory mite, P.macropiliswith the rate of about of 5 individuals /bit .
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| Publication year |
2003
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| Pages |
1595-1608
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| Organization Name |
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| Author(s) from ARC |
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| External authors (outside ARC) |
جمال الدين عبد المجيد إبراهيم
معهد بحوث وقاية النباتات
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| Publication Type |
Researsh & Applied Activities
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