How to prevent and control pests and diseases of oil tea (Camellia oleifera)? A full analysis of practical techniques

Oil tea (Camellia oleifera) is a major oil crop with extremely high market value. In recent years its planting scale has grown larger and larger, but during cultivation it is also very prone to pests and diseases, which seriously affect the yield of oil tea. So to obtain high yields, the first thing to do is good pest and disease control work. Below, the editor brings you the control techniques for common pests and diseases of oil tea.

1. Anthracnose

The main affected parts are the fruit, branches and leaves, and trunk. When the disease occurs, red-brown spots appear on the fruit, branches and leaves, which gradually spread into large light-brown spots. In the later stage, dark brown spots appear on the lesions, ultimately 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.

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 the disease occurs, it causes a large number of fallen leaves and fallen fruit, and in severe cases the bud tips die, and the plant's growing points are damaged. The occurrence of this disease is generally related to the temperature and humidity of the environment. Its pathogen spreads with wind and rain, and it generally occurs frequently in summer and autumn.

Control methods: Strengthen management in the grove, improve ventilation and light penetration in the field, give priority to prevention, and regularly spray Bordeaux mixture. When the disease occurs, carbendazim and thiophanate-methyl can be used for control.

3. Root rot

Root rot mainly harms the plant's root system. It generally occurs in April-May or September-October. When the disease occurs, it first infects the root crown area, and brown lesions appear on the affected parts. In the later stage, white hair-like growth appears, causing the root system to rot, the leaves to wither and fall off, and finally the plant dies. In plots with heavy, sticky soil and poor drainage, the disease is more severe.

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 lime powder into the diseased holes, and irrigate with ziram and carbendazim for control.

4. Insect pests

The insect pests of oil tea (Camellia oleifera) include lepidopteran and coleopteran leaf-eating pests. They gather on the leaf parts of oil tea and gnaw on the leaves. Once the pest outbreak occurs, they can gnaw the plant's leaves clean in a short time, causing great harm.

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 pest and disease control techniques for oil tea (Camellia oleifera). We hope it can help you. If you want to learn more related knowledge, please stay tuned to us.