What pesticides are used in Chinese cabbage?

Chinese cabbage is a common vegetable in daily life, almost every family has a kind of vegetable, which is very popular in the market, but during the period of planting Chinese cabbage, there will be a variety of diseases and insect pests, so what pesticides are used to control Chinese cabbage?

1. Cabbage catchment disease

Sudden collapse disease is common on all kinds of vegetables and harms the seedling stage. Water-stained spots appear at the root base of the seedlings during the disease, which gradually constricts into a line with the change of the disease, and then folds to the ground. If the soil humidity is high, white cotton flocs will also appear at the location of the disease.

Prevention and control methods: this disease mainly occurs in the high temperature and rainy season in the south, and is also easy to occur in the low temperature and high humidity environment in the seedling stage. The seeds and soil were disinfected before planting and sprayed with aldicarb hydrochloride or carbendazim after the disease.

2. Black rot of Chinese cabbage

Black rot can occur on both seedlings and adult plants of Chinese cabbage. During the disease, the leaves appear water-immersed disease spots, the roots blacken, and finally wilt and die. When the adult plant occurs, the leaf appears disease spot or leaf vein blackens, the disease spot changes into a v-shaped yellow-brown spot, gradually spreads the whole bulb, and finally it is easy to crack when dry, and rot when the humidity is high.

Prevention and control methods: it is easy to occur in the climate of high temperature and humidity in summer, in addition, continuous cropping and improper fertilization will also lead to the disease. The same planting disinfection of soil and seeds, scientific and rational fertilization, a balanced mix of various fertility, difenoconazole, thiabendazole can be used to prevent and cure the disease.

3. Soft rot of Chinese cabbage

Chinese cabbage soft rot can occur in seedling stage, rosette stage and pericardium stage, and can occur in different parts, such as rhizome, leaf and Baoxin. In the end, they all lead to different parts of the body rotting and dying.

Prevention and control methods: in the rainy season, excessive watering and leaf cracks are easy to occur, avoid continuous cropping with Solanaceae and melons when planting, and avoid planting on low-lying, sticky soil. Disinfect the soil and seeds before planting, remove the diseased plants from the roots and take them out of the field in time after the disease, and then spray them with thiomycin and chunramycin.

4. Insect pests

The main pests of cabbage are Plutella xylostella and aphids, which nibble on mesophyll or suck leaf juice, resulting in dry and curled leaves, which will cause death to cabbage seriously.

Control methods: often remove weeds, reduce the living environment of insects, but also use greenhouse technology closed for 3-5 days, so that high temperature insecticidal source, in addition, chemical control can be used.