Population fluctuations of Tetranychus urticae Koch and the associated predatory mite, Euseius scutalis (A.-H.) on three soybean cultivars at Gharbia governorate
Anber, H., Younes, A., El-Shafei, G., Ammar, M. (2020). Population fluctuations of Tetranychus urticae Koch and the associated predatory mite, Euseius scutalis (A.-H.) on three soybean cultivars at Gharbia governorate. EKB Journal Management System, 14(1), 13-20. doi: 10.21608/ajesa.2020.180883
Helmy A. Anber; Ahlam A. Younes; Ghada M. El-Shafei; Mohamed R. Ammar. "Population fluctuations of Tetranychus urticae Koch and the associated predatory mite, Euseius scutalis (A.-H.) on three soybean cultivars at Gharbia governorate". EKB Journal Management System, 14, 1, 2020, 13-20. doi: 10.21608/ajesa.2020.180883
Anber, H., Younes, A., El-Shafei, G., Ammar, M. (2020). 'Population fluctuations of Tetranychus urticae Koch and the associated predatory mite, Euseius scutalis (A.-H.) on three soybean cultivars at Gharbia governorate', EKB Journal Management System, 14(1), pp. 13-20. doi: 10.21608/ajesa.2020.180883
Anber, H., Younes, A., El-Shafei, G., Ammar, M. Population fluctuations of Tetranychus urticae Koch and the associated predatory mite, Euseius scutalis (A.-H.) on three soybean cultivars at Gharbia governorate. EKB Journal Management System, 2020; 14(1): 13-20. doi: 10.21608/ajesa.2020.180883

Population fluctuations of Tetranychus urticae Koch and the associated predatory mite, Euseius scutalis (A.-H.) on three soybean cultivars at Gharbia governorate

Acarines: Journal of the Egyptian Society of Acarology
Article 2, Volume 14, Issue 1 - Serial Number 14, 2020, Page 13-20  XML PDF (304.83 K)
Document Type: Original research articles
DOI: 10.21608/ajesa.2020.180883
View on SCiNiTO View on SCiNiTO
Authors
Helmy A. Anber1; Ahlam A. Younes2; Ghada M. El-Shafei1; Mohamed R. Ammar2
1Plant Protection Department, Faculty of Agriculture, Tanta University
2Cotton and Field Crops Acarology Department, Plant Protection Research Institute, ARC.
Abstract
The population fluctuations of Tetranychus urticae Koch and the associated phytoseiid mite, Euseius scutalis (A.-H.) on three soybean cultivars at Gharbia Governorate were studied during two successive seasons of 2015 and 2016. The results indicated significant differences in the T. urticae infestations through 2015 and 2016 seasons. Giza 35 variety harbored the highest infestation recorded 552.56 and 440.5 motile stages/10 leaflets for the two successive seasons, as compared with Giza 21 and Giza 83 varieties. Giza 21 variety was the most tolerant one recorded 130.38 and 174.88 motile stages/10 leaflets for two successive seasons. Significant positive correlations occurred between the T. urticae population and E. scutalis in all soybean varieties. The predatory mite was the main important predator for suppressing population density of T. urticae population during the two successive seasons. The insignificant positive effect of maximum and minimum temperatures on the population of T. urticae infested the three soybean varieties during 2015 and 2016. The combined effect of the tested weather factors (max temp., mini temp. and R.H. %) and the plant age together on T. urticae population were studied. The plant age and phenology were more effective on T. urticae population as compared with the weather factors.
Keywords
ecology; spider mite; susceptibility; weather factors; Glycine max
Statistics
Article View: 523
PDF Download: 843