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ABDEL-WAHED, N., EL-SAYED, K., EL-GHOBASHI, M. (2009). BIOLOGICAL CONTROL OF TETRANYCHUS URTICAE KOCH ON WATERMELON IN OPEN FIELD AND GREENHOUSE BY USING THE PREDATORY MITE SPECIES PHYTOSEIULUS PERSIMILIS (A.-H.). Egyptian Journal of Agricultural Research, 87(4), 1057-1062. doi: 10.21608/ejar.2009.198819
NAZEH M. ABDEL-WAHED; KARM M. EL-SAYED; MONA S. EL-GHOBASHI. "BIOLOGICAL CONTROL OF TETRANYCHUS URTICAE KOCH ON WATERMELON IN OPEN FIELD AND GREENHOUSE BY USING THE PREDATORY MITE SPECIES PHYTOSEIULUS PERSIMILIS (A.-H.)". Egyptian Journal of Agricultural Research, 87, 4, 2009, 1057-1062. doi: 10.21608/ejar.2009.198819
ABDEL-WAHED, N., EL-SAYED, K., EL-GHOBASHI, M. (2009). 'BIOLOGICAL CONTROL OF TETRANYCHUS URTICAE KOCH ON WATERMELON IN OPEN FIELD AND GREENHOUSE BY USING THE PREDATORY MITE SPECIES PHYTOSEIULUS PERSIMILIS (A.-H.)', Egyptian Journal of Agricultural Research, 87(4), pp. 1057-1062. doi: 10.21608/ejar.2009.198819
ABDEL-WAHED, N., EL-SAYED, K., EL-GHOBASHI, M. BIOLOGICAL CONTROL OF TETRANYCHUS URTICAE KOCH ON WATERMELON IN OPEN FIELD AND GREENHOUSE BY USING THE PREDATORY MITE SPECIES PHYTOSEIULUS PERSIMILIS (A.-H.). Egyptian Journal of Agricultural Research, 2009; 87(4): 1057-1062. doi: 10.21608/ejar.2009.198819

BIOLOGICAL CONTROL OF TETRANYCHUS URTICAE KOCH ON WATERMELON IN OPEN FIELD AND GREENHOUSE BY USING THE PREDATORY MITE SPECIES PHYTOSEIULUS PERSIMILIS (A.-H.)

Article 15, Volume 87, Issue 4, December 2009, Page 1057-1062  XML PDF (223.2 K)
Document Type: Original Article
DOI: 10.21608/ejar.2009.198819
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Authors
NAZEH M. ABDEL-WAHED; KARM M. EL-SAYED; MONA S. EL-GHOBASHI
Plant Protection Research Institute, Agricultural Research Center, Dokki, Giza, Egypt
Abstract
Biological control of the two-spotted spider mite, Tetranychus urticae Koch in Behera Governorate on watermelon field and greenhouse are possible by using the predatory mite, Phytoseiulus persimilis (A.-H.). The predacious mite was released at three levels 20, 30 and 40 individuals/bit in open field, while was released in greenhouse at one level with 30 individuals/bit, the best one in the level C (40 individuals/bit) followed by B and A levels, respectively. The percent reduction of T. urticae population in open field reached 98.25% after seven weeks from released at level C (40 individu-als/bit), while reached 94.82 and 92.38% at levels B and A, respec-tively. The reduction percentage of T. urticae in greenhouse at rate 30 individuals/bit was 98.83% in the end of experiment. This re-sults indicated that the possibility of this predator to control T. urti-cae on watermelon in open field and greenhouse.
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