What are the control methods for apple ring rot?
During the apple planting process, it is inevitable that some diseases will attack, and ring rot is one disease farmers need to pay attention to when managing orchards. So, how to control apple ring rot?
How to control apple ring rot
Strengthen the management of young trees. Newly planted seedlings should be watered in time, and waterlogging should be prevented during the rainy season. Nitrogen fertilizer should not be applied in autumn. In early September, the terminal buds should be pinched off so that the young trees grow vigorously and their disease resistance is enhanced. Prune the fruit trees scientifically and reasonably, and manage water and fertilizer properly.
Half a month before the fruit trees bud, Qingkulike can be used at 200-300 times dilution and Genjibao at 300 times dilution for one root irrigation, pouring into the fine root zone, with thorough soaking as the standard. Root irrigation promotes root development, strengthens the plants, and enhances their disease resistance. Spray the whole orchard with Kuifuling and organosilicon to sterilize and disinfect.
In early spring in early March and in autumn in September, apple trees need to be inspected, and the rough bark and old peeling bark on the trunk and side branches should be scraped off. This can both check for rot disease and ring rot, and scrape off overwintering insect eggs in the peeling bark to facilitate spraying for pest control. After inspection, apply rot-preventing medicine to the trunk. The peeling bark will gradually lift, which helps the old bark fall off and new bark grow.
When diseased spots are found, scrape off the diseased spots on the branches until the white (healthy) bark is reached, then use Kuifuling stock solution plus organosilicon and apply evenly 3-5 times, with an interval of 3-5 days each time, and the application range should extend 2-3 cm beyond the scraping range. Later, Kuifuling and other agents need to be used for branch spraying and brushing. Use Lianguoan, Wofengsu, etc. for foliar spraying.
The control of apple ring rot mainly involves scientifically and reasonably caring for the plants, and then using chemical agents for prevention and treatment, thereby ensuring the healthy growth of the fruit trees.