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(2) Control measures:
1 Strengthen orchard management. Remove the disease at any time, remove the falling fruit; plowing the land in autumn; in winter, cutting the tree with dead fruit, dead branches, etc., can reduce the bacteria source.
2 spray protection. Pre-emergence spray wave 5 degrees lime sulfur plus 3% of 80% sodium pentachlorophenol or 40% of Fumei arsenic 100 times liquid to eradicate the bacteria on the tree. The protective forests and surrounding miscellaneous trees on orchards should also be sprayed to prevent bacteria. Spray 50% acetaminophen wettable powder or 10% polyoxorubicin or 70% thiophanate-methyl wettable powder 1000 times, 50% phenylhexadecane wettable powder 2000 times, 50% retreat before flowering and at the end of flowering Special bacteria WP 800 times, 50% carbendazim WP 1000 times, to protect the fruit. Spraying once in each month in early May and late June, the control effect is significant, and it can also treat ringworm, anthrax, and dry rot.
3 strengthen the management of storage period. During the storage period, the cellar temperature is preferably kept at l-2°C and the relative humidity is about 90%, which can control the occurrence of mycotic heart disease.
The Incidence of Apple Mold Disease
(1) Incidence pattern: Apple mold is a disease caused by many fungi. The pathogenic bacteria overwintered in sick or dead tissue and spread infestation in the spring of the next year. The germs enter the ventricle through the bowls of flowers and fruits, spreading in the ventricle, and some of the bacteria latent in the ventricle until the onset of disease. The infection rate of pathogenic bacteria is positively correlated with the opening rate of tube. All the patients have open mouths and long tubers are sick, such as Red Star, Marshal, etc. The incidence is heavy; Golden Crown, Guoguang, Fuji and other varieties are closed, the bacteria is difficult to invade, and the ventricular carriers are very few, so they are more resistant to disease. . The orchards are low-lying, with canopy closures and heavy tree weaknesses.