Seasonal Abundance of Certain Piercing Sucking Pests on Cucumber plants In Egypt. | ||||
| Egyptian Academic Journal of Biological Sciences. A, Entomology | ||||
| Article 7, Volume 10, Issue 7, November 2017, Page 65-79 PDF (341.79 K) | ||||
| DOI: 10.21608/eajb.2017.12094 | ||||
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| Authors | ||||
| Saleh A.A. A.1; H. M. El-Sharkawy2; F. S. El-Santel2; Rehab A. Abd El-Salam2 | ||||
| 1Plant Production Dept., Faculty of Technology & Development, Zagazig University, Egypt | ||||
| 2Plant Protection Research Institute, Agricultural Research Center (ARC), Dokki, Giza, Egypt. | ||||
| Abstract | ||||
| Experiments were carried out at Diarb Negim district, Sharkia Governorate to study certain piercing sucking pests infestation and their associated predators on cucumber plants during two successive seasons 2014-2015 and 2015-2016 . The dominant insect pests were cotton aphid, Aphis gossypii Glover, whitefly, Bemisia tabaci (Genn.), Thrips tabaci (Lindquist) and a few numbers of Jassid as well as Nezara viridula F. Whereas, the prevailing associated predators were Orius spp., Metasyrphus corollae F., Chrysoperla carnea (Steph.), Coccinella undecimpunctata L. and a few number of Paederus alfierii (Koch) and true spiders. The infestation with A. gossypii and B. tabaci were much higher in autumn plantations than in summer plantations in both seasons of study, while, T. tabaci could be detected in few number on cucumber plants during autumn plantation in both seasons. In autumn plantation, Orius spp. had two peaks of activity in both years. The two peaks were recorded on the 1st and the 3rd November (17 and 23 individuals/30 leaves, resp.) in 2014 season and (9 and 12 individuals/30 leaves) in 2015 season. In the same regards, during summer plantation, Orius spp. had two peaks of activity on the 2nd of May and the 1st of June (48 and 31 individuals/30 leaves) in2015 season. Also, Metasyrphus corollae had two peaks of activity on 4th of April and 1stof May (3 and 17 individuals/30 leaves. Chrysoperla carnea had two peaks of activity on 2nd and 4th of May (3 and 15 individuals/30 leaves).Statistical analysis showed that temperature and relative humidity were significant with some insects and insignificant with the others. | ||||
| Keywords | ||||
| aphid; whitefly; Thripes; Predators; Cucumber | ||||
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