Chemical Control of Main Diseases of Cucumber in Greenhouse

First, downy mildew: 75% chlorothalonil WP 600 times, 70% phospine aluminum Mn Zn wettable powder 500 times liquid and other agents, spraying once every 7-10 days. Positive and negative leaves are sprayed, must be sprayed, spray thoroughly.

2. Fusarium wilt: Irrigate the roots at the early stage of disease. The available agents are: 50% carbendazim WP 500 times, 70% thiophanate-methyl WP 800 times, 250 mL per plant, every 7 Irrigation once a day, even irrigation 3 times.

Third, powdery mildew: 15% powder rust wettable powder 1500 times, 75% chlorothalonil WP 600 times, or 50% carbendazim WP 600 times, spray every 7-10 days Once, spray 2-3 times.

Fourth, gray mold: In the early stage of disease, 10% of the quick-acting smoke agent or 45% of the chlorothalonil smoke agent is used to prevent and treat with 250 grams per acre for 3-4 hours, once every 7 days.

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