Pathogenicity of Two Fungi; Trichoderma harzianum and Cladosporium herbarium on The Two-spotted SpiderMite; Tetranychus urticae Koch
Afifi, A., El- Saiedy, E., Shaltout, A. (2007). Pathogenicity of Two Fungi; Trichoderma harzianum and Cladosporium herbarium on The Two-spotted SpiderMite; Tetranychus urticae Koch. EKB Journal Management System, 1(1), 7-10. doi: 10.21608/ajesa.2007.4984
A. Afifi; E. El- Saiedy; Abeer Shaltout. "Pathogenicity of Two Fungi; Trichoderma harzianum and Cladosporium herbarium on The Two-spotted SpiderMite; Tetranychus urticae Koch". EKB Journal Management System, 1, 1, 2007, 7-10. doi: 10.21608/ajesa.2007.4984
Afifi, A., El- Saiedy, E., Shaltout, A. (2007). 'Pathogenicity of Two Fungi; Trichoderma harzianum and Cladosporium herbarium on The Two-spotted SpiderMite; Tetranychus urticae Koch', EKB Journal Management System, 1(1), pp. 7-10. doi: 10.21608/ajesa.2007.4984
Afifi, A., El- Saiedy, E., Shaltout, A. Pathogenicity of Two Fungi; Trichoderma harzianum and Cladosporium herbarium on The Two-spotted SpiderMite; Tetranychus urticae Koch. EKB Journal Management System, 2007; 1(1): 7-10. doi: 10.21608/ajesa.2007.4984

Pathogenicity of Two Fungi; Trichoderma harzianum and Cladosporium herbarium on The Two-spotted SpiderMite; Tetranychus urticae Koch

Acarines: Journal of the Egyptian Society of Acarology
Article 3, Volume 1, Issue 1, October 2007, Page 7-10  XML PDF (29.99 K)
Document Type: Original research articles
DOI: 10.21608/ajesa.2007.4984
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Authors
A. Afifi1; E. El- Saiedy2; Abeer Shaltout3
1Zoology and Agric. Nematology Dept., Faculty of Agriculture, Cairo University, Giza, Egypt
2Plant Protection Dept., National Research Center, 12622 Dokki, Cairo Egypt
3Plant Pathology Institute, Agric. Res. Center, Giza, Egypt
Abstract
spider mite Tetranychus urticae Koch. Pathogenicity of the two fungi against T. urticae were studied and evaluated under
laboratory and semi-field conditions. Three fungal spore suspensions were prepared; T. harzianum (2x106 spores/ml),
C. herbarium (1x106 spores/ml) and a mixture of both fungi (50%: 50%). The effect of fungal spore suspensions on the
deferent stages of T. urticae was studied at 30 & 35oC and 90 % R.H. The mortality percentages of all mite stages
increased with prolonging the period after spraying. The mixture of the two fungi gave higher mortality than a single one
after 3 and 7 days for all mite stages reaching 46.8% and 59.8% after 3 and 7 days respectively at 30oC, while at 35oC, it
increased to 65.1% and 83.0%after the two periods respectively. Under semi-field conditions, the mean reduction in mite
population resulted from using suspensions of T. harzianum and C. herbarium recorded 42.4 and 43.9% respectively
after 10 days of spraying, while it increased to 58.2% when using the mixture of the two fungi. Both fungi T. harzianum
and C. herbarium exhibited a positive effect in the pathogenicity of the two-spotted spider mite, T. urticae, but it is
recommended to use a mixture of both fungi to obtain more efficient control.
Keywords
pathogenicity; fungi; Trichoderma harzianum; Cladosporium herbarium spider mite; Tetranychus urticae
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