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Nawar,, M., Imam, I. (2017). The Role of some Natural Enemies in Controlling the String Bean Pests in Greenhouse. Journal of Plant Protection and Pathology, 8(10), 517-520. doi: 10.21608/jppp.2017.46593
M. A. Nawar,; Iman I. Imam. "The Role of some Natural Enemies in Controlling the String Bean Pests in Greenhouse". Journal of Plant Protection and Pathology, 8, 10, 2017, 517-520. doi: 10.21608/jppp.2017.46593
Nawar,, M., Imam, I. (2017). 'The Role of some Natural Enemies in Controlling the String Bean Pests in Greenhouse', Journal of Plant Protection and Pathology, 8(10), pp. 517-520. doi: 10.21608/jppp.2017.46593
Nawar,, M., Imam, I. The Role of some Natural Enemies in Controlling the String Bean Pests in Greenhouse. Journal of Plant Protection and Pathology, 2017; 8(10): 517-520. doi: 10.21608/jppp.2017.46593

The Role of some Natural Enemies in Controlling the String Bean Pests in Greenhouse

Article 8, Volume 8, Issue 10, October 2017, Page 517-520  XML PDF (210.55 K)
Document Type: Original Article
DOI: 10.21608/jppp.2017.46593
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Authors
M. A. Nawar,1; Iman I. Imam2
1Animal Pest Unit Plant Prot. Dept., Desert Res. Center
2Econ. Entomol. Unit Plant Prot. Dept., Desert Res. Center
Abstract
Bemisia tabaci Genn. (Hemiptera: Aleyrodidae) and Tetranychus urticae Koch. (Acari: Tetranychidae) are major pests infesting string bean, Green beans Phaseolus vulgaris, in greenhouses. The use of different release regimes of the two predators;  Chrysoperla carnea (Steph.) (Neuroptera: Chrysopidae) and Amblyseius swirskii (Athias-Henriot) (Acari: phytoseiidae) was considered. The experimental desine included using either of A. swirskii or C. carnea solitary in sequential or combined release. Generally, the pests’ populations decreased compaired with the control plants as result of predators release. The percent reduction of T. urticae and B. tabaci increased gradually to reach its maximum values (over 90 %) for T. urticae and B. tabaci, respectively  after 8 to 10 weeks of release over different release regimsThe present study indicated that the use of A. swirskii or C. carnea for controlling both T. urticae and B. tabaci on P. vulgaris reveled similar effeciency regardless they were used soliratily or in combination under green housae conditions. So using either of them as avilable natureal enemy can be recommended.  
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