After the beginning of autumn, the fruit of persimmon tree began to enter the stage of enlargement and coloration and ripening, and the skin became thinner, which made it easy to infect anthrax. Therefore, during persimmon fruit enlargement and color maturation, it is necessary to prevent and control anthrax to protect the fruit.
Control methods: During persimmon fruit enlargement and color transfer, check the fruit of persimmon tree and find that there are individual fruits on the plant with dark brown pitted water-stained rot lesions. When it appears, it will spray 1500 times 45% Fresh amine emulsifiable concentrate solution or 1500 times 10% difenoconazole water dispersible granules aqueous solution, 600 times 25% prochloraz aqueous solution, 600 times 60% enzymatic zinc wettable powder aqueous solution, 700 times 70% propene zinc can Wet powder aqueous solution, 800 times 80% mancozeb wettable powder aqueous solution, 1500 times 46.1% copper hydroxide wettable powder aqueous solution, 600 times 20% copper thiobacilli solution, etc., spray once every 10-15 days Continuous spraying 2 to 3 times, evenly spray all the branches and fruits inside and outside the canopy, and it is advisable to start dropping with drops of water. Within 4 hours after spraying, rainwater should be flushed and the spray should be re-applied again to improve the control effect. Because the anthrax damage of persimmon fruit is very strong, and it is very easy to produce drug resistance, so the drugs should be used interchangeably. Do not use the same kind of drug repeatedly to avoid drug resistance and reduce the control effect. If you can simultaneously add 0.3% to 0.5% potassium dihydrogen phosphate aqueous solution in the liquid with the spray, the effect is better, not only can strengthen the efficacy of sterilization and treatment, improve the control effect, but also enhance the ability to resist disease, accelerate the recovery of diseased tissue Normal growth, but also from the foliage to add nutrients, promote fruit enlargement and color maturity, increase production and improve quality.
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