Desoky, A., Negm, M., Saleh, M. (2020). Factors Affecting The Population Density of The Two-Spotted Spider Mite ,Tetranychus Urticae Koch on Cucumber Plants in Sohag Governorate. العوامل المؤثرة على کثافة تعداد اکاروس العنکبوت الاحمر ذو البقعتین على نباتات الخیار بمحافظة سوهاج. Journal of Plant Protection and Pathology, 11(10), 511-513. doi: 10.21608/jppp.2020.124927
A. S. S. Desoky; M. W. A. Negm; Mai M. M. Saleh. "Factors Affecting The Population Density of The Two-Spotted Spider Mite ,Tetranychus Urticae Koch on Cucumber Plants in Sohag Governorate. العوامل المؤثرة على کثافة تعداد اکاروس العنکبوت الاحمر ذو البقعتین على نباتات الخیار بمحافظة سوهاج". Journal of Plant Protection and Pathology, 11, 10, 2020, 511-513. doi: 10.21608/jppp.2020.124927
Desoky, A., Negm, M., Saleh, M. (2020). 'Factors Affecting The Population Density of The Two-Spotted Spider Mite ,Tetranychus Urticae Koch on Cucumber Plants in Sohag Governorate. العوامل المؤثرة على کثافة تعداد اکاروس العنکبوت الاحمر ذو البقعتین على نباتات الخیار بمحافظة سوهاج', Journal of Plant Protection and Pathology, 11(10), pp. 511-513. doi: 10.21608/jppp.2020.124927
Desoky, A., Negm, M., Saleh, M. Factors Affecting The Population Density of The Two-Spotted Spider Mite ,Tetranychus Urticae Koch on Cucumber Plants in Sohag Governorate. العوامل المؤثرة على کثافة تعداد اکاروس العنکبوت الاحمر ذو البقعتین على نباتات الخیار بمحافظة سوهاج. Journal of Plant Protection and Pathology, 2020; 11(10): 511-513. doi: 10.21608/jppp.2020.124927
Factors Affecting The Population Density of The Two-Spotted Spider Mite ,Tetranychus Urticae Koch on Cucumber Plants in Sohag Governorate. العوامل المؤثرة على کثافة تعداد اکاروس العنکبوت الاحمر ذو البقعتین على نباتات الخیار بمحافظة سوهاج
1Plant protection Department , Faculty of Agriculture, Sohag University, Egypt
2Plant Protection Department, Faculty of Agriculture, Assiut University, Egypt.
3Plant Protection Department (Agricultural Zoology), Faculty of Agriculture, Sohag University, Egypt.
Abstract
The population abundance of the two-spotted spider mite, Tetranychus urticae that infest cucumber plants in upper-Egypt was investigated during spring plantations of 2015 and 2016 season. Data showed that the population of the spider mite population varied in its density during the entire season of both seasons with a peak number occurrence the end of season (May 30 ), when plant age was 90 day-old when temperature and relative humidity were in moderate levels. Also, this study revealed that the cucumber plants highly impacted by the pest in addition to the few number of predators were observed during these seasons. The abiotic factors, e.g. temperature, relative humidity, and the plant age, more likely to induce the infestation than the biotic factors (predators). Accordingly, further studies are needed to examine the factors affecting the population of this pest. This study may be useful for determining the timing of the control program for T. urticae that infest cucumber plants during spring plantations.
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