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Pythium aphanensis Pest Control
Photinia had strong resistance and no devastating pests were found. However, if improper management or poor nursery environment, gray mold, leaf spot disease or harm by scale insects may occur. Botrytis cinerea can be sprayed with 50% carbendazim 1000 times solution, and it can be sprayed with 50% dexamethasone 800 times solution at the onset. Leaf spot can be treated with 50% carbendazim 300 to 400 times solution or thiophanate 300-400 times solution. Scale insects can be sprayed with 200-fold dilution with dimethoate emulsion or sprayed with 800-1000 times.