MySheen

Which fungicides can control root rot of Chinese cabbage

Published: 2024-11-05 Author: mysheen
Last Updated: 2024/11/05, The cause of downy mildew of Chinese cabbage is fungal disease, which is mainly caused by leaves, and stems and flowers can also be damaged. After being infected, the front of the leaf produces watery chlorotic spots, and then develops into yellowish brown, which is polygonal due to the limitation of leaf veins due to the enlargement of the disease spot. When the weather is wet, there is a white sparse mildew layer on the back of the leaves.

In the early stage of the onset of Chinese cabbage root rot, it is best to remove the diseased plants in the field, seal them with quicklime or lime water, and then generally use the medicine in the field. Considering that some bacteria have been immersed into some undiseased strains at this time, it is best to choose highly effective fungicides with internal absorption. It is a bacterial disease, which mainly depends on Rain Water or irrigation water to spread widely in the field. It is the key to master this rule, select planting plots and pay attention to prevention in the onset season (such as rainy season, especially in the case of flooding). Prophylactic drugs can be used to control bacterial diseases, such as agricultural streptomycin, Ye Qingshuang, noble copper, thiobacillus copper, thiosen copper and so on. Ye Qingshuang and organic copper preparations thiobacillus copper (Longke bacteria), thiosen copper have a certain internal absorption, can be selected, it is best to use alternately. Copper noble (basic copper sulfate) and other drugs have no internal absorption effect, after the use of drugs, the effect on infected plants will be worse. If the incidence in the field is very high, pull it out.

 
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