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What are the control methods for rose gray mold?

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Gray mold mainly affects flowers and young shoots. After the flower buds are infected, at first there are small irregular water-soaked spots, and the lesions continue to expand until the entire bud becomes soft and rots. After the diseased buds wither, they hang above the diseased tissue. The pathogen also attacks the shoots from which flowers have been removed. Under warm and humid conditions, the diseased parts produce a large amount of gray mold. Control measures: 1. Remove diseased flowers promptly, remove withered old flowers, and burn them in a centralized manner. 2. For greenhouse cultivation, pay attention to ventilation and avoid excessively high humidity. 3. When disease occurs, spray 65% zineb wettable powder at 600 times dilution, 75% chlorothalonil wettable

Gray mold mainly affects flowers and young shoots. After the flower buds are infected, at first there are small irregular water-soaked spots, and the lesions continue to expand until the entire bud becomes soft and rots. After the diseased buds wither, they hang above the diseased tissue. The pathogen also attacks the shoots from which flowers have been removed. Under warm and humid conditions, the diseased parts produce a large amount of gray mold.

Control measures: 1. Remove diseased flowers promptly, remove withered old flowers, and burn them in a centralized manner. 2. For greenhouse cultivation, pay attention to ventilation and avoid excessively high humidity. 3. When disease occurs, spray 65% zineb wettable powder at 600 times dilution, 75% chlorothalonil wettable powder at 700 times dilution, or 70% thiophanate-methyl wettable powder at 1500 times dilution.

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