الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Tested Trichoderma harzianum and Trichoderma album were found to be highly compatible for tank mixture with azoxystrobin or subsequent application in field or in integrated pest management programs. Also, no negative obvious effect was noticed on tomato seedlings grown from tomato seeds irrigated with different azoxystrobin concentrations. Seed germination, root and vegetative growth system as well as, germinated seedling weight did not affected significantly in treatments comparing with control. Potential effect of azoxystrobin on physiological responses of tomato seedlings transplanted to open field based on physiological, histological and growth parameters of tomato plants support that azoxystrobin may have a positive effect on tomato plants grown under the condition of well-watered compared with negative effect appeared obviously under drought condition. On the other hand, azoxystrobin degradation in/on tomato leaves and fruits exhibited that the rates of degradation (k values) were 0.117 and 0.170, while, the corresponding half-life times (t0.5) were 5.90 and 4.07 days in tomato leaves and fruits, respectively. Therefore, treated tomato fruits should not be used for human consumption until the residues reach the EPA MRL (0.2 mg/kg) after elapse 2 weeks from spraying. A protection average period of 12.94 days for leaves and 19.87 days for fruits were predicted. The study revealed that azoxystrobin deterioration under agricultural conditions of Egypt mainly depended on wind speed which play the most important role in dust excitation that absorb azoxystrobin especially if it was sprayed on surfaces dusted with soils, then, exposure to UV radiation.