Tangshan shovel manufacturer introduces the control measures of cabbage diseases and pests

1. The cabbage suddenly collapsed

Sudden falling disease is a common disease of various vegetables, which harms the seedling stage. At the time of disease onset, water soaked disease spots appeared at the root base of seedlings, gradually contracted into a line with the change of disease spots, and then turned to the ground. If the soil moisture is high, white cotton wool will appear at the place where the disease occurs.

Prevention and control methods: The disease mainly occurs in the hot and rainy seasons in the south, and is also easy to occur in the low temperature and high humidity environment in the seedling stage. Before sowing, the seeds and soil shall be sprayed with mycophenolate hydrochloride or metalaxyl after the disease occurs.

2. Black rot of Chinese cabbage

Both seedling and adult plants of Chinese cabbage may develop black rot. When the seedlings germinate, water soaked disease spots appear on the leaves and the roots become black, which means withering and death. When the adult plant grows, the leaves appear disease spots or the leaf veins become black. With the spread of the disease spots, the disease spots become v-shaped yellow brown spots and gradually spread to the whole bulb. It is fragile and easy to crack when dry, and easy to rot when the humidity is high.

Tangshan shovel manufacturer suggests that everyone should prevent and control diseases: hot and humid climate in summer is easy to get sick. In addition, continuous cropping and improper fertilization can also lead to diseases. Similarly, soil and seeds should be well treated, fertilization should be scientific and reasonable, and all kinds of fertility should be balanced. In case of disease, spray with difeconazole and thiabendazole for prevention and treatment.

3. Soft rot of Chinese cabbage

The soft rot of Chinese cabbage can occur in seedling stage, rosette stage and pericardium stage, and can occur in different parts such as rhizome, leaf and heart. They all lead to decay and death of different parts.

Prevention and treatment: too much watering in rainy season, leaves with cracks and wounds are easy to get sick. Avoid continuous cultivation of solanaceous and melon vegetables, and avoid planting on low-lying, sticky soil. The soil and seeds before planting shall be uprooted in time after the occurrence of the disease, removed from the field, and then sprayed with thiourea ketone and spring thunder fungus for control.

4. Pests

The pests of Chinese cabbage mainly include diamondback moth and aphid. They bite the mesophyll or suck the juice of leaves, resulting in the withering and curling of leaves. In serious cases, they can cause the death of Chinese cabbage.

Control method: Weeds are often used to reduce the living environment of insects. Canopy technology can also be used to close for 3-5 days under high temperature to kill the pest source. In addition, pesticides can be used for control.