The latest course on the prevention and control of gum disease in peach trees

As a common disease in the process of planting peach trees is gum disease, which mainly occurs between May and September, which will lead to greater loss of nutrients and gradual weakening of the tree. So how to prevent and cure the gum disease of peach trees? Let's take a look at the detailed introduction.

1. Symptoms

Gum disease can be divided into infectious and non-infectious, infectivity mainly occurs on the branches, but also harms the fruit, when the disease occurs in the lenticel as the center will appear verrucous protuberances, gradually expand into tumor-like protuberances, covered with black grain spots, and then expand and crack, flow out translucent soft glue, and then become dark brown, the texture will become hard, in serious cases, it will lead to branch death. Non-infectious is a physiological disease, the symptoms are similar to the former, but the cause is freezing injury, mechanical wounds caused by a large number of physiological glue, in addition, too many results will also lead to physiological glue disease.

2. The cause of disease

Physiological glue flow is mainly caused by other diseases, freezing injury, overpruning, mechanical wounds and so on, while infectious glue is caused by fungal infection. Its pathogens are Botrytis cinerea and Peach Cystis. The pathogens overwinter in tree trunks and branches in the condition of mycelia and conidia. After the temperature warms up in spring, they begin to reproduce in large numbers and spread through wind and rain, invading from the wounds and lenticels of the plants, resulting in disease.

3. Prevention and control technology

First of all, it is necessary to strengthen fertilizer and water management, increase the application of organic fertilizer, and improve the disease resistance of peach trees. At the same time, it is best to clear the garden in winter and spring, which can be sprayed with stone-sulfur mixture to prevent diseases. In peach trees from April to May, spraying methyl topiramate, tebuconazole or frost urea manganese zinc every 10-15 days has an excellent preventive effect. When glue flow occurs, scrape off the glue first, then smear it with Kuifuling and silicone solution many times, and brush dry the trees with more glue. For the serious glue flow phenomenon, in addition to smearing, we can also take root irrigation measures, with Qingku Rike 200-300 times + Genjibao 300 times + organosilicon root irrigation, the effect is better.

The above is the introduction of peach tree gum disease prevention and control technology, hope to help you, want to know more related knowledge, please pay attention to us.