MySheen

How to prevent and cure powdery mildew of cut rose

Published: 2024-11-05 Author: mysheen
Last Updated: 2024/11/05, Powdery mildew is one of the most important diseases of rose, which harms leaves, tender shoots, buds and pedicels. The control methods are as follows: strengthening cultivation management and timely removal of the disease; pruning in time to improve ventilation and light transmission conditions; nitrogen fertilizer should not be too much, it is necessary to increase the application of phosphorus and potassium fertilizer. 15% can be sprayed to prevent and cure the disease during the growing period.

Powdery mildew is one of the most important diseases of rose, damaging leaves, tender shoots, flower buds and flower stems. The control methods are as follows: strengthen cultivation management and remove the diseased bodies in time; prune in time, improve ventilation and light transmission conditions; nitrogen fertilizer should not be too much, and phosphorus and potassium fertilizer should be appropriately applied. For pesticide control, 2000~4000 times of 15% triadimefon WP or 1000 times of 50% metophoryl WP can be sprayed; 1000 times of 50% benlaite WP; 800~1000 times of 30% triflumiconazole (pay attention to self-protection);50% sulfur suspension (spray 200~300 times of solution when the disease first occurs, spray 400~500 times of solution when the temperature is higher than 30 ℃). In addition, sodium fluorosulfate is a poison bait, generally used at a concentration of 15%, to control pests.

 
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