Controlling apple rot with salt water

Apple rot disease is the most common disease in fruit tree cultivation. Once a diseased plant is found, it must be prevented in time. Otherwise, it will spread to the whole garden quickly, which will not only affect the normal growth of apple trees, but also seriously affect the yield and quality of apples. There are many methods and drugs for preventing and treating this disease. Now, a simple method for controlling apple rot with salt water is introduced.

First, the principle of prevention

1 salt water viscosity is poor, fluidity is strong, easy to spread evenly, easy to penetrate the seam, the effect is better; 2 25% of the salt water is applied to the diseased sputum, the water evaporates to form a very thin salt film , hyphae can not penetrate the salt membrane into the phloem; 3 scattered in the salt membrane or through the salt membrane into the phloem tissue pathogens, and the pathogens left in the disease, due to salt osmotic pressure is higher, water absorption capacity is stronger The water is lost, so that the fruit trees are protected from infringement and protected.

Second, prevention and treatment methods

1 boiled brine. The salt is prepared into 25% salt water, put into a pot and boiled, and allowed to cool for use.

2 scrape the disease and apply medicine. In March, April or August, use a sharp knife to scrape all the diseased necrotic bark on the diseased branch of the apple branch, and extend it to the surrounding area of ​​about 1.5 cm, so that the scraped disease is surrounded by Healthy disease-free tissue. When scraping, the bark at the edge of the diseased edge is cut into a slope of 45° to 60°, so that the diseased sputum is jujube-shaped or elliptical, which is beneficial to the healing of the diseased sputum. Apply the boiled salt water to the scraped disease with a small brush. The range is more than two centimeters. Scrape one piece, apply one piece, and apply it again after two weeks. The application must be even and meticulous, and should not be carried out in a hurry.

3 control combination. In order to prevent the recurrence of rot disease, when the new disease is smeared every spring or autumn, the salt must be applied to the previous disease to achieve a thorough cure.

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