How to control Botrytis cinerea in cauliflower

Cauliflower is a vegetable, a variety of cabbage, cauliflower is a cruciferous plant, a leaf cauliflower production (20) seed broad, base obtuse, the edge is wavy, smooth glabrous, yellow-and-white flowers of the annual or biennial herbs. Leaves on the root, the main stem and branch stem, the stem is covered with small grains to form a flower, the flower is fleshy, the whole is like a large flower, the color is white and beautiful. Cauliflower is tender, sweet and delicious, and is easy to digest and absorb after eating.

Cauliflower is a variety of cabbage, cauliflower is a variety of cabbage, cauliflower is a cruciferous plant, a leaf cauliflower production (20) seed broad, base obtuse, the edge is wavy, smooth glabrous, yellow-and-white flowers of the annual or biennial herbs. Leaves on the root, the main stem and branch stem, the stem is covered with small particles to form a flower, the flower is fleshy, the whole is like a large flower, the color is white and beautiful. Cauliflower is tender, sweet and delicious, and is easy to digest and absorb after eating. Cauliflower growth habit cauliflower growth habit is a semi-cold-tolerant vegetable, its heat and cold tolerance is not as good as cabbage, neither high temperature and drought nor frost tolerance. The suitable temperature for growth is relatively narrow, and the cultivation requirements for environmental conditions are relatively strict, which is mainly determined by the botanical characteristics of cauliflower. Because the product organ of cauliflower is a short flower branch, flower axis, flower bud and so on, the flower ball is not only a reproductive organ but also a nutrient storage organ. Biologically speaking, any organism to the reproductive stage is the weakest fragile stage of stress resistance, so cauliflower has poor resistance to adverse environmental conditions such as high temperature, drought and frost during the period of flower head growth and development. In terms of the growth habits of cauliflower, the aggregated bulb is used as a nutrient storage organ. Under suitable environmental conditions, cauliflower changes from vegetative growth to reproductive growth through the process of nutrient accumulation and storage with the bulb as the carrier, so as to make the bulb fully grow and firm. If cauliflower is at this stage, the external conditions are beyond its own suitable range, such as high temperature and drought, the above process will be shortened, and its shortened flower branches will elongate rapidly at high temperature, thus making the heading small and loose, and the cultivation will not get a satisfactory harvest. Botrytis cinerea bacterial black rot is one of the main diseases of cauliflower, which affects the yield of cauliflower. So how to control Botrytis cinerea of cauliflower? What is grey mold? Botrytis cinerea is a common fungal disease of crops in open field and protected field, which is difficult to control. It is a low temperature and high humidity disease. The high incidence period is when the growth temperature of the pathogen is 20: 30 ℃, the temperature is 20: 25 ℃, and the humidity is more than 90%.

The cause of botrytis cinerea in cauliflower: the pathogen is fungus, which is caused by Botrytis cinerea infection and transmitted by disease residue, airflow and Rain Water. It is easy to occur when the temperature is 13-19 ℃ and the relative humidity is above 90%.

Control methods of Botrytis cinerea in cauliflower:

1. At the initial stage of the disease, 10% Sukeling smoke agent 200-250g per mu, or spraying 6.5% carbendazim ultra-fine dust or 5% plus Renong dust agent 1kg per mu.

two。 After the attack, use 50% Sukeling wettable powder 2000 times, or 50% prohydantoin wettable powder 1000-1500 times, or more than 40%. Sulfur suspending agent 600 times liquid spray, once every 7-10 days, 2-3 times continuously.