Harmful symptoms Gray mold mainly damages cucumber flowers, melon strips, leaves, stems and vines. More invaded from the withered female flowers, causing the flowers to rot and grow a brown-brown moldy layer. The disease spreads to the young larvae, which causes the melons to become soft, rotting and shrinking. The diseased part begins to yellow, then grows white mold and gradually turns pale gray, the diseased melons stop growing, and finally they rot and fall off.
Control methods
Strengthen the cultivation and management to keep the shed clean, enhance light, to avoid watering in rainy days, to prevent flooding irrigation, the best choice for watering in the sunny morning. Release the air in a timely manner to control the humidity. Keep temperatures above 14°C at night in the shed to prevent freezing at night by prolonged ventilation.
Remove the diseased body and remove the diseased fruit in time. Place it in a plastic bag and take it out of the shed to bury or burn it to prevent the bacteria from re-infecting.
Chemical control agents are smoked and sprayed. Smoke can be smoked with 10% fast Ke Lingyan or 45% chlorothalonil or 15% Kefening, with 200-250 grams per 667 square meters. Immediately after being ignited with dark fire in the evening, it can be smoked overnight. , open the door the next day ventilation. Smoke effect is better than spray, because it does not increase humidity, prevention is more thorough.
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