Archives of Phytopathology and Plant Protection (2017) 50, 150-166

I.E. Elshahawy, Nehal Saied, F. Abd-El-Kareem and A. Morsy (2017)
Biocontrol of onion white rot by application of Trichoderma species formulated on wheat bran powder
Archives of Phytopathology and Plant Protection 50 (3-4), 150-166
Abstract: In vitro, Trichoderma album, Trichoderma harzianum, Trichoderma koningii, Trichoderma viride and Trichoderma virens showed antagonistic effect against the most pathogenic isolate (Sc2) of Sclerotium cepivorum, the cause of onion white rot disease. Five Trichoderma preparations of each Trichoderma sp. were prepared on wheat bran powder to be used for controlling white rot disease of onion. Greenhouse and field experiments followed the same trend where T. harzianum and T. koningii were the most effective in reducing the incidence and severity of white rot disease compared with the control. Trichoderma species preparations caused promotion to vegetative parameters of onion plants in pots and increase bulb productivity in filed. In this regard, T. harzianum and T. koningii were the most effective. A positive correlation was found between the biocontrol activity of Trichoderma species preparations and enhancement of peroxidase, polyphenoloxidase and chitinase enzymes in onion plants to resist infection with S. cepivorum.
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Link to article at publishers website

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
evaluation - screening - selection

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Stromatinia cepivora	Onion/garlic/leek (Allium)
Trichoderma harzianum (antagonist)	Stromatinia cepivora	Onion/garlic/leek (Allium)
Trichoderma koningii (antagonist)	Stromatinia cepivora	Onion/garlic/leek (Allium)