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Cut Rose Powdery Mildew Control Methods and Key Technical Points

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Powdery mildew is one of the most important diseases of roses, damaging leaves, young shoots, flower buds and pedicels. The control methods are as follows: Strengthen cultivation management and promptly remove diseased plant residues; prune in good time to improve ventilation and light conditions; nitrogen fertilizer should not be excessive, and phosphorus and potassium fertilizers should be appropriately increased. Chemical control: when the disease occurs during the growing season, spray 15% triadimefon wettable powder at 2000-4000 times dilution or 50% thiophanate-methyl wettable powder at 1000 times dilution; 50% benomyl wettable powder at 1000 times dilution; 30% triflumizole at 800-10

Powdery mildew is one of the most important diseases of roses, damaging leaves, young shoots, flower buds and pedicels. The control methods are as follows:

Strengthen cultivation management and promptly remove diseased plant residues; prune in good time to improve ventilation and light conditions; nitrogen fertilizer should not be excessive, and phosphorus and potassium fertilizers should be appropriately increased.

Chemical control: when the disease occurs during the growing season, spray 15% triadimefon wettable powder at 2000-4000 times dilution or 50% thiophanate-methyl wettable powder at 1000 times dilution; 50% benomyl wettable powder at 1000 times dilution; 30% triflumizole at 800-1000 times dilution (pay attention to personal protection); 50% sulfur suspension concentrate (spray at 200-300 times dilution at the first sign of disease, and at 400-500 times dilution when the temperature is above 30 degrees Celsius).

In addition, sodium fluorosulfate is a poison bait, generally used at a concentration of 15%, to control insect pests.

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