Apple rotten disease prevention tips

Apple rotten fruit disease mainly includes rotenia, black rot, anthracnose, brown rot, and epidemic rot, all of which can turn good fruit into defective fruit, affecting the yield and quality of the fruit, thereby reducing the profit of the orchard. Apple rot pathogens typically infect fruits from the young fruit stage (May to July) and then assume a latent state. Fruits form in the near-maturity (8-9 months) of autumn fruits and then begin to develop symptoms after a short period of time. Especially in the late rainy season, it is extremely prone to occur under conditions of warm and humid conditions. Therefore, it is suggested that friends of the farmers must conscientiously and comprehensively do a good job of ensuring fruit and promoting income.

1. Strengthen the cultivation and management to improve the disease resistance of the tree From the beginning of August, combine spraying with 3-4 sprays of poly confectionery, high beauty, and foliar protection, rich potassium and 0.5% potassium dihydrogen phosphate. 10-15 days. Take a good look at the land and use the water; stop ring-cutting and girdling, trim the fall crops in due course, and eliminate the branches and branches of the pests, leggy branches, and branches, and the dense branches and thin branches, to facilitate ventilation; Bags were also used to remove some of the infested fruit, fruit, rust, malformed fruit, and dried fruit, in order to reduce nutrient consumption and enhance tree vigor to improve the stress resistance of the tree.

2. Scientific selection of drugs for appropriate prevention and control After August and September, it is not only the mature period of late-maturing apples but also the epidemic stage of spread of germs. At this time, it should be sprayed according to weather conditions. Generally, when there is no rain or little rain, it can be carried out according to the routine. If the rainfall is high and the temperature and humidity are high, the interval should be appropriately shortened, and the frequency of Application should be increased and the use of systemic sterilization and protective fungicides should be alternately used. The bactericide is 68.75% esafety 1500 times liquid, 10% elder 2500-3000 times liquid, bactericidal 1200-1500 times, 70% thiophanate-methyl 800 times, and 800 times 80% Dasheng M-45 liquid. , 40% Fuxing 800-1000 times fluid, there are people more commonly used Bordeaux mixture. In the formulation of pesticides, the addition of quantitative synergists and penetrants will not only increase drug efficacy, have a long residual effect, but also be resistant to rainwater erosion. The control effect is quite good.

3, pay attention to the quality of spraying the spraying process requires uniform, thoughtful, comprehensive, meticulous carelessness, in particular, should pay attention to spray branches, fruits, highlight the key, do not stay in trouble, do their utmost to the late apple rotten fruit disease treatment, governance The control is at a minimum.

4. After picking the fruit, the fruit is harvested and the fruits are soaked with 2-6% calcium chloride solution, fruit disease safety or bacterial poison clear solution for 0.5-1 minutes before harvest, which can significantly reduce the fruit during storage. The probability of occurrence of the disease.

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