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LARGE SCALE PRODUCING AND RELEASEING OF THE PREDATORY MITE, PHYTOSEIULUS MACROPILIS (BANKS) TO CONTROL TETRANYCHUS URTICAE KOCH ON COMMERCIAL STRAWBERRY PLANTATIONS (ACARI: PHYTOSEIIDAE & TETRANYCHIDAE)
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Abstract: A commercial strawberry farm at Abo-Sower district (Ismailia Governorate,Egypt) was chosen for large scale producing and releasing the predatory mites Phytoseiulus macropilis (Banks) for controlling the two-spotted spider mite, Tetranychus urticae Koch on commercial strawberries in the same farm. Two screen-houses (6.5m width x 40m length x 2m height) were established for producing the predators in early and late production periods (November –December, 2004 and January-February, 2005) where about 3.4 and 3 million moving stages of predators were collected in the two previous producing periods, respectively. Augmentative releases of the predator were applied on a commercial strawberry field of about 40 feddans in the same farm to control the two-spotted spider mites T. urticae. The predator was released in the early or late season with a rate of 3-5 predators/bit (about 60000-100000predators/feddan). In the early predator release the T. urticae densities remained near or within the economic threshold levels, while in the late predator release the spider mite infestations were relatively higher than those in the early predator release. In the two predator release times several hot spot areas were detected where additional predator releases were applied to reduce the pest populations. The highest predator populations occurred on both time releases on late and early March with relatively high densities in the late predator release.
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| Publication year |
2007
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| Pages |
153-163
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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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