What are the prevention and control methods of pepper gray mold?

Botrytis cinerea is one of the common plant diseases, which does great harm to crops, especially pepper, so what good methods can be used to control Botrytis cinerea in pepper planting?

What is Botrytis cinerea

Botrytis cinerea is a common disease of pepper at seedling stage, which is distributed all over the country and mainly occurs in protected areas. The pathogen of botrytis cinerea in pepper is Botrytis cinerea, which belongs to semi-known subphylum fungi. The pathogen overwintered with sclerotia in the soil or with hyphae and conidia on the diseased remains. The conidia spread with the airflow and Rain Water, and the field farming operation could also spread the germs. Low temperature, high humidity and weak light are beneficial to the disease. The period of spread and growth of Botrytis cinerea is when the humidity persists, especially in the continuous rainy weather in spring, when the temperature is too low and the ventilation is not timely.

The infection of Botrytis cinerea on pepper is mainly in the seedling and adult stage. When the seedlings are infected, the cotyledons turn yellow, then the young stems constricted, and the diseased parts are easy to break, resulting in the death of the seedlings. When the adult plant is infected, the leaves visible to the naked eye will rot or dry up, and there will be gray mildew when the humidity is high. When the pepper stem is infected, there will be water-immersed irregular spots or stripes, which gradually become grayish white or brown. The disease spot surrounds the stem for a week, its upper branches and leaves wilt and die, and mildew grows on it when it is wet, such as Fusarium wilt.

II. Control of Botrytis cinerea in pepper

Pepper Botrytis cinerea will cause so serious damage to pepper, and may even lead to no harvest of pepper grains, resulting in serious losses, so how to control pepper gray mold?

1. Preventive measures: use moldy 30ml 50ml + Wofengsu 25ml + organosilicon 5g, spray 30 jin of water regularly. Carefully observe the condition of chili seeds after spraying, if there are no symptoms, it is successful prevention.

two。 The initial stage of the disease: in the early stage of the disease, Mizhi 50-70ml + garlic oil 25ml + Vofengsu 25ml + organosilicon 5g was sprayed with 30 jin of water and sprayed once every 3 days for 2-3 times. After the symptoms of Botrytis cinerea disappeared, it was changed to prevention and regular prevention of Botrytis cinerea.

3. In the middle and later stage of the disease: in the later stage of the incidence of Botrytis cinerea, Mizhi 70-100ml + garlic oil 15ml + Wofengsu 25ml + organosilicon should be used, spray 30 jin of water, spray once every 3 days, and turn to prevention after the pepper showed obvious improvement. at the same time, we should pay attention to ventilation and maintain the temperature to maintain a good growth environment for the growth of pepper.

Through these introductions, do you understand the prevention and control measures of pepper gray mold?