What pesticides are used for lotus root pest control?

Lotus root has high edible value and medicinal value, but it is inevitable to encounter diseases and insect pests in the process of planting. What pesticides should be used to control diseases and insect pests?

What kind of pesticide is used in lotus root

Pesticides and doses are different for different diseases and insect pests. The main diseases of lotus root are: rot, leaf blight, leaf spot, so how to control these diseases?

Before planting, spray the seeds with 1000 times of methyl topiramate or 75% chlorothalonil, cover the agricultural film for 24 hours, dry and plant. At the initial stage of the disease, 0.5kg of 75% chlorothalonil and 0.5kg of 65% Dysen zinc were mixed with 30 kg of soil and sprinkled into shallow paddy fields. Spray control with 1000 times of methyl topiramate, 65% of Dysen zinc or 1 ∶ 1 ∶ 160200 Bordeaux solution, generally every 10-5 days, 2-3 times.

First, the leaf spot of lotus root is mainly harmful to leaves, and sometimes occurs on the petiole, which is caused by pathogenic fungi of the genus Cladosporium.

Second, lotus root rot disease, also known as black root disease, lotus root plague, is a major disease in lotus root production. In general, the old lotus root field and continuous cropping field with shallow tillage layer and shallow water are prone to disease, affecting the formation of lotus root and reducing yield. It is a disease of lotus root caused by Fusarium oxysporum, which is mainly harmful to underground stem, aboveground leaf and leaf surface.

Third, lotus root leaf blight is the second most serious disease on lotus root, and the pathogen is monofilament pathogenic fungus. The main harm to the lotus leaf, the edge of the lotus leaf first appeared light yellow disease spot, and then gradually spread to the middle of the leaf, showing yellowish brown, and finally expanded from the mesophyll to the leaf vein, until the whole leaf withered. High temperature and rainy, conducive to the disease, lotus root field fertility is insufficient, the disease is serious.