Coriander planting: what are the hazards of Sclerotinia sclerotiorum?

What harm does coriander Sclerotinia sclerotiorum have? What causes Sclerotinia sclerotiorum of parsley? Also ask experienced netizens to help introduce the harm and causes of Sclerotinia sclerotiorum in coriander, which are listed below for netizens' reference. The harm of coriander Sclerotinia sclerotiorum: Sclerotinia sclerotiorum mainly harms the base of stem, followed by leaves. At the beginning, the discolored waterlogged spot appeared, and then it became light brown and expanded rapidly. when the humidity was high, the disease had white cotton-like hyphae, showing soft rot, and in the later stage, the hyphae formed black sclerotia under the white mold layer, and when serious, the disease seedlings withered and died. Main points of identification: when it is wet, there is a white cotton-like mildew layer on the surface of the disease, and a sclerotia is formed on the stem surface in the later stage, or black sclerotia can be seen on the stem. The cause of Sclerotinia sclerotiorum disease: (1) the relationship between incidence and temperature and humidity the temperature of the germ is 0-30 ℃, the optimum temperature is about 20 ℃, and the relative humidity is more than 85%, which is conducive to the occurrence and development of bacteria. Therefore, the occurrence of Sclerotinia sclerotiorum is serious in winter and spring where the temperature is relatively low and the humidity is high. (2) the relationship between disease and soil moisture. The survival time of sclerotia in water was short, and the sclerotia died in 1 month. Therefore, sclerotia can survive for about 1 year in moist soil and more than 3 years in dry soil. It can be seen that the high soil moisture is not conducive to sclerotia survival and the incidence of disease is reduced. (3) the relationship between the disease and other vegetables due to Sclerotinia sclerotiorum disease can damage almost all vegetables, including cabbage, lettuce, celery, cucumber, tomato, eggplant, bean, fennel, cabbage and so on. After the occurrence of Sclerotinia sclerotiorum in these vegetables, there is sclerotia in the soil, and parsley can be infected by planting parsley. (4) the relationship between disease and seeds if the sclerotia is mixed in the seeds, the sclerotia enters the vegetable field with sowing and infects coriander. Click to get more coriander planting techniques click to get more vegetable planting techniques