The Latest Technical Methods and Tutorial for Preventing and Controlling Pests and Diseases of Oil Tea Camellia

Oil tea camellia is a major oil crop with extremely high market value. In recent years, its planting scale has grown larger and larger, but it is also highly prone to pests and diseases during cultivation, seriously affecting the yield of oil tea camellia. Therefore, to obtain a high yield, the first thing to do is to carry out pest and disease prevention and control well. Below, the editor brings you the prevention and control techniques for common pests and diseases of oil tea camellia.

1. Anthracnose

The main parts it harms are the fruit, branches, leaves and trunk. When the disease occurs, red-brown spots appear on the fruit, branches and leaves, and they gradually spread into large light-brown spots. In the later stage, dark brown spots appear on the diseased areas, finally causing the fruit to crack, a large number of leaves and fruit to fall off, branches and leaves to wither and die, and the trunk to rot. In severe cases, the entire plant dries up and dies.

Prevention and control methods: When planting, choose varieties with strong disease resistance, and at the same time strengthen management, enhance tree vigor, and improve the plant's disease resistance. During the seedling stage, Bordeaux mixture can be sprayed for prevention, and when the disease occurs, carbendazim can be sprayed for control.

2. Soft rot

Soft rot mainly harms the fruit and leaf buds. When it occurs, it causes a large number of fallen leaves and fruit. In severe cases, the bud tips wither and die, and the plant's growth nodes are damaged. The occurrence of this disease is generally related to environmental temperature and humidity. Its pathogens spread through wind and rain, and summer and autumn are generally the periods of high incidence.

Prevention and control methods: Strengthen woodland management, improve ventilation and light transmission in the field, focus on prevention, and regularly spray Bordeaux mixture. When the disease occurs, carbendazim and thiophanate can be used for control.

3. Root rot

Root rot mainly harms the plant's root system, generally in April-May or September-October. When the disease occurs, it first infects the root collar area. Brown lesions appear on the diseased parts, and later white hair-like growth emerges, causing the root system to rot, leaves to wither and fall off, and finally the plant to die. This disease is more severe in plots with heavy, sticky soil and poor drainage.

Prevention and control methods: After the disease occurs, promptly clean up the diseased plants, pull them out and take them out of the field. At the same time, spread quicklime powder into the diseased holes, and irrigate with ziram and carbendazim for control.

4. Pest insects

The pest insects of oil tea camellia include leaf-eating pests of the orders Lepidoptera and Coleoptera. They gather on the leaf parts of oil tea camellia and gnaw the leaves. Once an outbreak occurs, they can completely eat the plant's leaves clean in a short time, causing great harm.

Prevention and control methods: Bacillus thuringiensis or Beauveria bassiana can be used for biological control. For larvae, trichlorfon and phoxim emulsifiable concentrate can be used for control.

The above is an introduction to the pest and disease prevention and control techniques for oil tea camellia. We hope it can help you. If you want to learn more related knowledge, please stay tuned to us.