In the early spring, it is a good time for apple tree scraping to prevent rot and ring spot disease. However, because some farmers have unclear how to scrape the two diseases, they often cause scraping every year, annual rot and ring rot. As it happens. In recent years, we have conducted fruit rot and fruit ringing guidelines on fruit farmers in some orchards and achieved good results. Zhuhai Mingke Electronics Technology Co., Ltd , https://www.mingke-tech.com
From late March to before and after the flowering period, it is the best time to prevent rot disease. At this point, the sap begins to flow. The rot disease spots begin to show water-stained symptoms and are easy to find and identify. At this time, the whole park should be thoroughly examined several times to check the incidence of rot disease. When scratching a lesion, it is necessary to scrape off a good tissue of 1 cm to make the wound into a new one so that the wound can be healed. Immediately after scraping, it is necessary to apply green guavadan, bactericidal clear liquid, lime sulfur solution or more than 20% concentrated salt water, and thoroughly remove the diseased skin and diseased dandruff. For trees with larger lesions, which have affected the transduction of tissue, bridging techniques should be used to remedy the exfoliation of the tree during flowering (adequate annual branches need to be prepared before sprouting, or leggy branches bridged by rhizomes). .
It should be emphasized that the curettage of rot disease can not be saved. Some growers simplifies the operation to use a knife to scribble on the disease, and then apply the medicine. This treatment may not see the development of lesions in the past, or even the development of lesions. Dry peeling, but because not completely remove the diseased tissue, can easily cause the recurrence of the second year of the lesion, and the incidence area is larger than the original, increasing the difficulty of prevention.
For ringworm disease that occurs on branches, the curettage method is very different from that of rot disease. Because most rot disease occurs due to lumps, it is necessary to completely scrape off the diseased tissue. The tumors of ringworm disease are often found everywhere. If the entire trunk or main branch is too heavy, it will affect the nutrient flow of the tree, affect the growth of the tree, and may even cause dead trees. Therefore, the curettage of branches and ring veins must be light, that is, scraping away the raised lesions with a scraper, and stopping when scraping near the bark. The same applies after the scraping, and the scraped skin tissue must be collected.
The last thing to note is that the squeegee should be sterilized regularly with the aid of an agent. Otherwise, the scraper with the germs will cause secondary infection during the scraping of new lesions, scraping the old ones and infecting new ones. The scraped skin tissue must be collected and burned or buried deeply. If it is not cleansed, it can be thrown on the ground or randomly piled around the orchard with dead branches. In case of wind and rain, these diseased tissues can be used as a source of infection. Infection.