Apple mildew malt, also known as apple mildew rot, apple heart rot, is one of the important diseases of apple fruit development, harvesting period, storage period, in recent years in the apple producing areas showed an upward trend.
Injury symptoms
Mold mustard important damage fruit. After the fruit was benefited, the early symptoms were not significant, and it was difficult to identify the fruit. When ripening, some of the diseased fruit surface yellow, perhaps earlier coloring. Severe diseased fruit is deformed, and occasionally pink and white mildew is found. During the storage period, the fruit mold is rotten faster, and the diseased fruit surface can be seen as water-stained, and the appearance is irregular brown wet rot plaque, and the plaque is connected. Into a film, and even the whole fruit erosion, the taste of the pulp is extremely bitter.
Prevention measures
1. Elimination of pathogens: In the summer, the dead branches, branches and branches of diseases and insects were completely cut off, and they were destroyed or buried in a concentrated manner. They were sprayed with 5 degrees lime sulfur plus 0.3% sodium pentachlorophenol, and the trees were eliminated.
2. Chemical control: This disease is the later infection, so it should be the key to control the spraying time.
(1) Spraying a wave of 5 degree lime sulfur mixture at the bud opening stage;
(2) Inflorescence dispersed time spraying 40% Fuxing EC 10000 times or 10% Shigao Shuifen granules 5000 times liquid plus 0.3% borax; also can spray 3% polyoxin 800 times or 4 times in the initial flowering period or flowering period % Agricultural anti-120 water agent 1000 times plus 0.3% borax;
(3) Spray 10% of SND 2000 times or 3% of polyoxin 800 times once 10 days after flowering.
3, to enhance the management of the storage period: the fruit of storage and transportation should be harsh fruit selection, remove the fruit and defective, damaged fruit, storage temperature adhere to 1-2 °C, can grasp the disease growth.
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