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Integrated pest control of apple
1. There are many rains in spring and summer, and the diseases and pests of apples are serious. The management is poor or even unacceptable. Pest control is crucial, especially diseases. The young fruit apple is not particularly resistant to infection, but the disease does not become latent after infection. The incubation period of rotenosis is 80 to 150 days and anthrax is 40 to 65 days. The key to apple disease prevention and control is the implementation of the Bordeaux-based liquid prevention and control program. Bordeaux liquid has been invented for more than 100 years and is still the main medicine for preventing diseases. Its advantages are: cheap; it is not a fake; not It will produce resistance; because it will not produce resistance, it is still the irreplaceable main drug for other pesticides now, and it is also the best medicine. The disadvantages are: only prevention can not be ruled; preparation and application costs, in particular, can not be mixed with acidic pesticides. Now Japan is spraying six times a year for disease prevention. Two of them are Bordeaux fluids. The ratio of the previous period is 1:1 to 1.5:200, and lime is added later. The specific prevention and control method is: 10 to 15 days after flowering the first chemical bactericidal drugs, such as multi-effect Ling, Dasheng M ~ 45, spray grams, fruit disease Ling, compound carbendazim and other protective or systemic fungicide , Bordeaux liquids were used on June 20th and mid-August each, and chemical drugs were used at other times. Zinc-copper Bordeaux mixture was used for Bordeaux fluid-sensitive species. The effect was also very good. Potentiators and extenders were added to the ear fluid. The effect will be better. The problem to be noticed is that Bordeaux mixture should not be applied at temperatures above 32°C during flowering and young fruiting, when morning dew does not dry, when the rain is not drying, and chemical pesticides should not be applied for a long time because of the resistance. 2. Prescriptions for the prevention and treatment of apple semolina: The application of 5 to 10 times thiophanate methyl oil after scraping the old skin for rough skin disease is excellent. 3, Red Marshal apple girdling dead tree prevention Marshal is the reason for the gauntlet dead tree is the wound wound too much, dilute or washed away the healing of the formation of thin-walled cells, resulting in failure to heal. A girdling knife was used 15 days after flowering, and a knife was peeled off in 15 days. This has achieved both the improvement of the fruit setting rate and the increase of the two girdling functions of the flower buds. So it will not die.