Potato black shank is a matter of course
Black shank disease is an important disease that damages the potato. It can occur throughout the whole growth period. It mainly damages the stem base and tuber of the plant, causing sapling and rot in the field. The disease is characterized by early onset and rapid onset. , high mortality, difficult to control. According to the symptoms of the disease, the law of occurrence and disease conditions, targeted prevention. Zhejiang Industrial Group Co., Ltd. , https://www.xingyeseafood.com
Symptoms of the disease: The disease can occur from the seedling stage to the later stage of reproduction, and it mainly harms the plant stem base and tubers.
The law of occurrence: The disease is a disease caused by bacteria. It spreads through seed potatoes and the soil is generally not borne by bacteria. Diseased potato and incompletely rotted diseased potato in the field are the primary sources of disease infestation. Cutting the seed potato with a knife is the main way to spread the disease.
Incidence conditions: The degree of disease is closely related to temperature and humidity. When the temperature is high, the disease is heavy. High temperature and high humidity are conducive to bacterial growth and harm. Soils with heavy soil and poor drainage have favorable effects on the disease. Viscous soils often have low soil temperatures and slow plant growth, which is not conducive to the formation of host tissue corky, and reduces the ability to resist the invasion of bacteria; viscous soil has large water content. It is conducive to the propagation, transmission, and intrusion of bacteria. As a result, the heavy soil and low-lying land masses are severely affected.