Control methods of common diseases and insect pests in Pinellia ternata

Pinellia ternata is widely distributed in China. It is a kind of medicinal plant, which mainly has the effects of dryness and dampness, reducing vomiting and relieving boils. However, with the increase of planting area, the harm of diseases and insect pests is becoming more and more serious, seriously affecting the yield and quality of Pinellia ternata.

1. Soft rot of Pinellia ternata

Also known as Pinellia ternata corm rot, is a bacterial disease, bacteria mainly through water transmission, mainly occurs in the high temperature and rainy season. During the onset of the disease, the bacteria invaded from the wound, and the tubers began to rot. With the development of the disease, the bacteria gradually spread to the aboveground parts, resulting in watery soft rot spots in the stems and leaves, accompanied by stench, and finally the plant withered and died.

Control methods: select disease-free, high-quality healthy seeds, choose to plant in the land with high terrain and good drainage, reasonable rotation, reduce pathogens and insect sources.

2. Virus disease of Pinellia ternata

Virus disease, as its name implies, is the main cause of virus disease caused by poisonous tubers when planting, and it can also be transmitted by aphids. When the disease occurs, it shows the shape of mosaic disease, leaf shrinkage, deformity, chlorosis and yellowing. If it is poisonous seeds and tubers, it is not easy to germinate. The use of poisonous tubers in adults will degrade the varieties and affect the yield.

Control methods: cultivate non-toxic seedlings, detoxify tubers by heating yield, strengthen field management, increase application of organic fertilizer and phosphorus and potassium fertilizer, eliminate aphids and other insect pests through plant disease resistance, and cut off the route of transmission. It was found that the diseased plants were taken out of the field and burned, and the diseased holes were disinfected with lime powder, and then sprayed with 2000 times of dimethoate or 1500 times of dichlorvos. Once a week, 2-3 times in a row.

3. Spodoptera litura

The larvae are mainly harmful to the larvae. After hatching, the larvae are parasitic on the back of the leaves, gnawing the epidermis of the leaves clean, forming transparent spots, and then forming small holes. Finally, the leaves are missing, and in serious cases, all the leaves can be eaten clean.

Control methods: adults pupate in the soil and begin to lay eggs and hatch after overwintering, so turn the soil deep before planting, eliminate overwintering pupae, reduce insect sources, combine ploughing and weeding in the larval stage, and eliminate insect eggs. Black light can also be used to trap or use pesticides to control.

4. Thrips

Both adults and larvae of thrips can be harmful, they gather in the tender parts of the leaves, absorb juice, destroy leaf tissue, and hinder the growth of Pinellia ternata. In its outbreak period, the plant dwarfs, the leaves curl, and finally dry up and die, which seriously affects the yield and quality of Pinellia ternata, and the economic loss is heavy.

Control methods: clean the field in time after harvest, collect and burn the dead branches and leaves or bury them deeply, and plough the soil in autumn to reduce the source of insects. Reasonable crop rotation, reduce the degree of insect pests, remove weeds in time during the growing period, and its natural enemies can also be used for agricultural control or chemical control.

The above are the prevention and control methods of common diseases and insect pests of Pinellia ternata. I hope I can help you. If you want to know more about planting Pinellia ternata, please follow us.