What is Sclerotinia sclerotiorum? How to prevent and cure?

What is Sclerotinia sclerotiorum? How to prevent and cure? Please introduce Sclerotinia sclerotiorum, the pathogen of Sclerotinia sclerotiorum is ascomycete subphylum. The sclerotia is placed on the aerial hyphae on the surface of the plant or on the inner cavity of the plant organs, which is like mouse dung, irregular and composed of hyphae. 1. Harmful symptoms: mainly harmful to roots and leaves. At the beginning of the disease, the leaves turned yellow, at the later stage, the plant wilted, the root tissue rotted into a cavity, which contained a number of black mouse fecal sclerotia. 2. The law of disease: the pathogen overwintered with sclerotia in seeds, diseased seedlings, diseased bodies or soil, formed ascospores from December to February-March of the following year, produced ascospores, scattered by wind and rain, and expanded the damage. The bacteria is a low-temperature disease, low temperature and high humidity, many weeds, extensive management is conducive to the disease. 3. Control measures ① focused on removing sclerotia from burned plants and soil to eliminate the source of the disease. ② rotation of flood and drought to eliminate sclerotia in soil. ③ established a disease-free seedling base, selected disease-free seedlings for transplanting, soaked in 0.05% Dysenamine for 10 minutes before transplanting, and disinfected the seedlings. In the early stage of ④, the diseased plants were pulled out in time, the diseased soil was dug out and disinfected with quicklime to prevent the disease from spreading. At the initial stage of ⑤, 65% Dysen zinc or Bordeaux solution was sprayed or irrigated with 300 times sclerotiorum. Click to get more Angelica planting technology click to get more medicinal material planting technology