Cucumber rotten vines are many reasons, the right medicine is the key

Many greenhouse cucumber farmers have recently consulted about the problem of rotten cucumbers. When I go to the countryside, I often encounter similar problems. However, from the symptoms reflected and the different conditions seen, the cause of rotting is not the same. The following analysis of several causes of rotten cucumber, help melon friends to prescribe the right medicine.

I. Cucumber sp

Most of the recent crumbling cucumbers are caused by the disease, and the disease should be based on comprehensive prevention and control. Combining chemical control with comprehensive prevention and control controls the occurrence and spread of diseases in management. In disease sheds, diseased plants and diseased leaves should be cleaned in a timely manner, removed from the shed, and burned. Chemical control can be used 70% of the 500-times Koto, 75% chlorothalonil 500, 10% difenoconazole water dispersible granules 1500 times. Note that in the early onset of drug use, the interval is 7 to 10 days, and in each removal of the old leaves, timely spraying 75% chlorothalonil 600 times in advance prevention.

Second, cucumber gray mold

Botrytis cinerea is a high-risk disease in cucumber production in winter. In many cases, rotten vines are caused by the disease. Most of the gray mold pathogens invade from the stumps of corruption, causing the fruits to rot, when these st When the fruit comes in contact with the stem, it will cause stem vines to appear, resulting in rotten phenomenon, for the prevention and treatment of gray mold can be used 50% fluocinonide 5,000 times, 20% procymidone suspension 500 times, 40% Pyrimethanil 1000 times, 50% bosinamide water dispersible granules 800 times. Every 7 to 10 days, especially before continuous cloudy days, pay attention to spray prevention.

Third, Sclerotinia

Sclerotinia is also one of the major diseases that damage cucumber stems in winter. The optimum temperature for S. sclerotiorum is around 24°C, the air humidity is around 85%, and it is not easy for the shed to fall below 85%. Therefore, the prevention and treatment of sclerotinia should pay special attention to the regulation of the environment, try to control the humidity inside the shelter, and control the medicine with gray mold.

Fourth, cucumber anthrax

Cucumber anthracnose is a kind of disease which was easily overlooked by the majority of vegetable farmers in the past. In recent years, the incidence of the disease has been on the rise, causing great losses to the vegetable farmers. The occurrence of anthrax is closely related to the planting of heavy crops and improper management of farmers. The disease often occurs on foliage and petiole. Infestation of stems causes rotting. At the early stage of disease, the lesions were oval, nearly round, brown, and pitted. In severe cases, the lesions are contiguous and cause the leaves to die. Chemical control can be used 40% Dufu Bromo WP 500 times, 25% Bromoacetoin 700 times or anthrax 800 times, spray every 7 to 10 days.

V. Bacterial soft rot

During the management of the shed, the appearance of subtle wounds should be reduced. The vines should be dropped and the leaves must be plucked before watering. Try to select the morning with clear weather. After watering is prevented, the moisture content of the stem increases, and the wound healing of the stem is slow during the operation. After the operation is finished, the pesticide should be sprayed in a timely manner to prevent the formation of infections caused by various diseases from the wound, especially the occurrence of bacterial diseases. At the same time, fertilizer and water management must be strengthened to improve the disease resistance and resistance of the plants. Once infected, use 20% thiazole copper suspension agent 750 times, 3% methobiotin wettable powder 600 times, 25% methamphetazole 800 times, spray every 5 to 7 days once, the effect It is more obvious.

The above-mentioned situations are the main causes of rotten vines, and as long as timely prevention of these types of diseases can avoid rotten vines. In fact, the management of greenhouse crops is a meticulous task, and the disease prevention and control requires an “early” word. As long as we carefully control the growing environment of the shed crops, so that the early prevention of disease early, these problems can be solved.

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