The cold weather in winter is very unfavorable for the cultivation of greenhouse vegetables. In particular, in winter greenhouses, in order to keep warm, the ventilation time is reduced to increase the humidity, which creates conditions for the occurrence of diseases. The following Huinong.com compiled a series of seven kinds of greenhouse vegetable diseases and drug use plans in winter. Let's learn together. Gray mold Botrytis cinerea can infect the flowers, fruits, leaves, stems and other parts of the plant, and infests from the residual stigma or petals, and then spreads to the fruit. Sclerotinia Sclerotinia sclerotior mainly harms the stems, leaves and fruits of vegetable crops, causing leaves, stems and fruits to rot and plants to die. 3. Bacterial flow gum disease The disease can be harmful on the fruits, stems and leaves of cucumber. 4. Black spot disease Black spot disease can infect the disease during the whole growth period of cucumber, which can damage the leaves, stems, tendrils, melons and growth points of cucumber. The young leaves, tender stems and young fruits of plants are the most seriously damaged. 5. Tomato late blight Late blight can damage tomato leaves, stems and fruits. 6. Downy mildew Downy mildew damages more vegetable crops, and there are certain differences in the symptoms. 7. Cucumber leaf spot The cucumber leaf spot disease mainly affects the leaves, and the central leaves first develop, and then gradually expand downwards, especially when there are too many melons. Disease prevention, we still have to follow the principle of early prevention, can be prevented by spraying protective fungicides such as chlorothalonil, carbendazim, azoxystrobin and other agents. When the humidity in the shed is relatively high, but the disease has to be prevented, in order to avoid increasing the humidity in the field, try to apply the dust method or the smoke method. If the spray method is applied, the number of prevention and treatment can be reduced as much as possible. Use a mixture of fertilizers. Type of medication Vegetable gray mold: Agents such as procymidone, iprodione, pyridine, carbendazim, azole ether, fluoroamide, and the like. Vegetable sclerotinia: An agent such as boscalid, procymidone, prochloraz, or sclerotium. Cucumber bacterial gum disease: Medicinal, spring leimycin, copper hydroxide and other agents. Black spot disease: Azoxystrobin, flusilazole, nitrile bacteria, thiram and other pharmaceutical agents. Tomato late blight: Agents such as propamocarb, cymoxanil, enoylmorpholine, fluorobacteria, carbendazim, fluthiazolone and other drugs. Vegetable downy mildew: A drug such as propamocarb, enoylmorpholine, fluthiazolidine or enoylpyrazole. Cucumber rod leaf spot: An agent such as boscalid, benzidine, prochloraz, fluorobacteria, trifloxystrobin, fluorobacteria or tebuconazole. The above is the seven common diseases and drug recommendations recommended by Huinong.com on the greenhouse vegetables in winter. The above-mentioned pharmaceutical solutions are for reference only and are helpful to everyone. Shanghai Enjosim Medical Technology Co., Ltd , https://www.enjosimmedical.com
