Causes and Control Methods of Fruit Tree Rot Disease
Rot disease is a disease that fruit growers frequently encounter. If not treated promptly when it occurs, it can lead to the death of fruit trees, and there are many causes that trigger it. How many do you know about? Let's take a look at these causes together with the editor!
1. Soil that is not breathable
The soil that many fruit trees need is loose and breathable. Such soil not only benefits the growth of fruit trees, but more importantly helps prevent these diseases. If the root system of a fruit tree remains in soil that is thick and highly viscous for a long time, then its roots' demand for air will not be met, and in this way some pathogens will slowly erode the tree body and breed more harmful pathogens, leading to the appearance of rot disease. If the soil layer remains compacted for too long, it will cause the death of the entire fruit tree.
2. Water rot
Water is very important for fruit trees, but too much water is equally harmful. Water rot is caused by excessive moisture in the soil layer, or by water submerging the surface soil. In such cases, the root system of the fruit tree is eroded by water for a long time, and gradually some harmful substances will breed, causing soaking and rotting. In severe cases, it will slowly decompose the bark surface, erode the entire plant, and cut off the gas circulation within its body. Therefore, drainage measures must be done well, and the degree of soil moisture should be noted during daily watering.
3. Fertilizer rot
Fertilizer rot is also a relatively common situation. There are two ways it occurs: one is caused by fertilizer being directly scattered onto the root system, and the other is caused by too much fertilizer, with the latter being more harmful. The former very easily causes the contacted area to undergo a chemical reaction and rot, while the latter easily causes biological rot in the fruit tree, simply put, nutrient excess. In both cases, the condition of the leaves can generally be observed. If batches of leaves turn yellow and there is no influence from other pests or diseases, then it is best to check the area where fertilizer was applied.
4. Excessive moisture
Fruit tree planting nowadays emphasizes planting in rows and columns, with space reserved in between and the ability for air to flow through. Besides making management convenient, there is another meaning: to prevent excessive moisture. When moisture is excessive, the probability of fruit tree disease is at least 50% higher, and water vapor will continuously corrode the bark surface of the fruit trees, reducing their preventive ability. Excessive moisture has a great impact on fruit tree rot disease, and in daily care it is best to ensure that some scattered sunlight can also reach the base.
The above are the causes that often lead to fruit tree rot disease. These factors can mostly be controlled artificially, and farmers just need to pay a bit more attention. For more related information, you can browse our website.
Alkaline water soaking method
Prepare an alkaline solution with edible alkaline powder and water at a ratio of 1:5. Scrape the diseased scar clean, and use a small brush to fully apply the alkaline water onto the diseased scar, extending more than 5 cm beyond the diseased scar, so that the alkaline solution fully enters the bark. Then wrap it tightly with plastic film and tie it firmly. Apply again after 10 days, and remove the plastic film after half a year. The cure rate of this method is above 85%.
Salt water soaking method
Prepare salt water with table salt at a ratio of 2.5%, boil it in a pot, and let it cool for later use. Then scrape away the diseased scar. In March to April or August to September, use a sharp knife to scrape off all the necrotic bark of the diseased scar on the branches and trunk of the fruit tree, so that there is no diseased tissue around the scraped scar. Then cut the bark around the diseased scar into a 45 to 60 degree slope to facilitate healing of the diseased scar. Apply the salt water with a brush onto the scraped diseased scar, and the application range should exceed the diseased scar by 2 cm. Scrape one spot and apply one spot, then apply again after half a month.
Garlic liquid sterilization method
Mash garlic into garlic paste, and add 10% salt water at a ratio of 1:1 to make garlic liquid. First scrape the diseased scar clean, and use a small brush or writing brush to apply the liquid onto the diseased scar, extending 3 to 5 cm beyond the diseased scar. Apply again after 10 days. The cure rate of this method is above 90%.