If the cucumbers grown encounter gray mold, how should we deal with this?

Cucumber gray mold is a common disease in cucumber cultivation in protected areas. Gray mold was discovered in cucumbers for the first time in Jinzhou. It was discovered in a greenhouse in Jixiang Village, Taihe District in winter. At that time, the diseased fruit rate in the greenhouse had reached 94%, seriously affecting cucumber production. Since then, this disease has been common in cucumbers grown in protected areas and has been severe every year. Thanks to the efforts of the local plant protection department, gray mold on cucumbers in protected areas has been effectively controlled. The cucumber gray mold that made vegetable farmers talk about it in the past is generally called a "rotten fruit" disease. However, now vegetable farmers suffer from cucumber gray mold every year. Therefore, cucumber gray mold cannot be taken lightly and preventive measures must be taken in a timely and scientific manner.

Cucumber gray mold may occur throughout the entire growth period of cucumbers, mainly damaging seedlings, flowers, leaves, and cucumbers. Greenhouses and greenhouses mainly damage gherkins, which has a great impact on yields. Most of the fungi start to infect the flowers. The flowers and the pedicles of the cucumbers begin to soak, and a faded, light gray-brown fungal layer will grow and penetrate from the cucumber stems, causing navel rot. Affected pups quickly become soft, shriveled, rotten, and moldy on the surface. When large cucumbers are injured, the tissue first turns yellow and produces white mold. Then the fungal layer turns light gray, and the victim melon stops growing. In severe cases, it rots and falls off.

Leaf damage is generally caused by diseases that fall on the leaves, forming larger rhombuses, almost round or irregular shapes, losing their green color, or having rings, obvious edges, and some spots appearing on the surface. Gray mold. Rotten cucumbers and rotten flowers are attached to the stems, and the stems will rot. In severe cases, the lower part of the plant will rot and break and die.

Cucumber gray mold in greenhouses in Jinzhou mainly occurs from March to May, with the highest incidence between April and May. In spring, the temperature is low, the light is insufficient, and wind protection in the greenhouse cannot be achieved in time, resulting in an environment of high humidity and low temperature in the shed, creating conditions for the spread of cucumber gray mold. Under these conditions, cucumbers have weak growth, differential disease resistance, and vulnerability to diseases. In addition to airflow, rain, etc., contact between bottled wine and dry wine or infected flowers and fruits falling on healthy parts can also cause disease, which is one of the ways to re-infect the warehouse room.

Cucumber gray mold is a disease of high humidity and low temperature. House, if the greenhouse is well ventilated, the humidity does not exceed 80%, and the night temperature is above 15, gray mold will be reduced. Therefore, attention should be paid to the temperature and humidity regulation during the growth period of cucumbers to create an ecological environment that is conducive to the growth of cucumbers but not conducive to the survival of pathogens. It is necessary to do a good job in ventilation to control moisture and ventilate in time. Especially in bad weather such as cloudy days, rain, snow, haze, etc., it is necessary to take off the burdock properly for ventilation. In winter or early spring, the indoor humidity in the barn is high, so it is best to use tobacco agents to prevent diseases. Give the right amount of water, use drip irrigation or micro-irrigation. If conditions permit, straw, rice straw, and sawdust can be spread on the field operation rows to reduce humidity and control evaporation in the field.