In the process of fruit tree cultivation and production management, we often encounter various fruit tree diseases, so what are the common fruit tree diseases?

Branching disease

In recent years, the death caused by branching diseases has increased year by year. The main diseases are dry rot, branch rot and ring rot, among which ring rot is the most serious. Small brown spots were formed on the fruit surface in the early stage of ring rot, which quickly spread into brown spots, leading to early defoliation, which was not conducive to the accumulation of photosynthetic products and seriously weakened the tree potential. Generally, with the spread of precipitation, the disease begins from May to June, and the peak period is from July to August.

nematode disease

Part of the ground is mostly yellow leaves, losing luster. In severe cases, leaves will appear. The new shoots are drawn late, and the leaves are small and thin, and gradually turn green. The underground part will show different symptoms due to different kinds of nematodes, mainly including nodules and root rot.

Apple spider mite

Apple hawthorn spider mite is a pest that harms the leaves of fruit trees. Small crepe spots appear on the front of damaged leaves, and serious leaves turn gray, which can cause tree burning, dead leaves and dead leaves. It mainly harms apple, sand fruit, pear, peach and other fruit trees.

The diseases of fruit trees are not limited to these. In order to solve the harm of diseases from the source, we must plan ahead.

With the social progress and the rapid development of the times in recent years, fruit tree planting technology has made some progress, and the level of integrated pest control technology for fruit trees has been further improved. So where do we need to start?

Control pathogens. The main pathogens causing fruit tree diseases are fungi, bacteria, viruses, nematodes, seed parasitic plants and so on. In orchards, fungi are the main pathogens causing infectious diseases of fruit trees. Fungi are widely distributed in nature and have strong adaptability, which is the most harmful to fruit trees.

For infected fruit trees, therapeutic fungicides can be used to kill invading bacteria, and the spread and spread of diseased spots can be controlled through their self-absorption conduction. Such fungicides include litchi, Jinlishi, Zhongsheng, carbendazim, thiophanate methyl, Haolike, Fuxing, Shigao, Jianlitong and Xinsheng. But the shelf life of this disinfectant is generally 5? ~? 7 days, the longest is about 10 days.

Preventing fruit tree diseases can not only reduce the cost of prevention and control, but also increase everyone's income, which shows the importance of preventing fruit tree diseases!