Black fruit disease of Lycium barbarum often occurs. Under what conditions is it easy to happen?

Lycium barbarum black disease is a common name of Lycium barbarum anthracnose and one of the main diseases of Lycium barbarum. Lycium barbarum black fruit disease exists in most Lycium barbarum producing areas in China to varying degrees, and occurs in many places one after another, resulting in the reduction of boxing ginseng production and the failure of neutron particles. It has brought huge economic losses to Lycium barbarum planting producers. Therefore, it is urgent to do a good job in the prevention and treatment of Lycium barbarum black fruit disease. The black fruit disease of Lycium barbarum mainly harms the fruit, and the inflammation of Lycium barbarum leaves generally begins at the tip or edge of the leaves, from semi-circular or yellowish brown to black moist necrotic spots.

Under certain climatic conditions, such as wet weather, sticky bacteria on the surface of spots from pink to orange produce pot-shaped spore piles, and the whole diseased leaves will turn dark brown in the later stage. Black spots will appear on the petals of Lycium barbarum flowers after they get sick, which will cause the corolla to fall off or not bear fruit directly. When the bud is sick, it will produce small black spots, and in more serious cases, it will produce black lace, which cannot be opened. Black spots or black spots often appear in superficial branch diseases. Red fruit salt damage, old-fashioned surface is mostly black spots, green fruit and yellow fruit salt damage, generally black net or black spots will appear on the surface of fruit.

With the development of the disease, the black spots or spots become larger, and the diseased part turns black in whole or in part. Under certain climatic conditions, the wet part of the building will produce orange stickiness and contact with other good fruits. The transmission route of Lycium barbarum black fruit disease, the black fruit pathogen overwinters with mycelium or conidia, and becomes the field infiltration source. Black fruit fungus invades from the natural pores and wounds of Lycium barbarum. Spread by pest erosion. Black fruit pathogen has the characteristics of latent infection, and the incubation period is determined by region and climate. The conidia of black widow's disease spread through rain, wind and human work.

According to the law of black fruit pathogen overwintering in diseases, all diseases under the tree will be removed before winter, and will be burned or buried in the yard. Working in the field of Lycium barbarum further ensures that there are no exposed residual diseases on the surface. It plays an important role in controlling and reducing the source of black widow's disease. Climatic conditions are the main factors of black fruit disease. According to the climatic characteristics of different regions and the latent characteristics of black fruit pathogen, pesticides should be sprayed immediately during the onset period of black fruit disease, and regularly in the field before the high disease and the peak season, before the rain, according to the weather forecast and 24 hours after the rain. Cooking is clear and effective, and the black fruit disease of Lycium barbarum is controlled economically.