Summary of the best prevention time and attention link of grape diseases; summary of the following is the best prevention time of various diseases of grapes and a part of the application and the links that should be paid attention to in the use of pesticides. :
(1) Powdery mildew : The pre-emergence bud is the most critical period of prevention and control; the flowering period from the flower to the young fruit stage is the peak period of the disease, which is a drought disease; the current excellent fungicides are the mold-resistant bacteria and the stable bacteria (fluorosilicone). Oxazole), diniconazole, tridemorpholine, mesamine, Pinjin, Enli Kang, and Tribe have good control effects.
(2) Black bean disease: Four times after the germination, the inflorescence exposed, the flower before the flower, and the flower after the flower is the key to the prevention and treatment of black bean disease. Wearing frustration, diniconazole, mycophenolate, difenoconazole, Fuxing, Shigao, etc. have good control effect. Cobo, essential, etc. are better protective agents.
(3) Downy mildew : It is very easy to occur in the rainy weather; the medicaments include Cork (enoylmorpholine), metalaxyl, ethylphosphorus aluminum, cymoxanil, and mildew.
(4) White rot: Preventing the spread of white rot spores is the best measure; in addition, pay attention to the standardized protection after the flowering to the sealing stage. Protective agents include: Cobo, Fumeishuang, Anthrax Fumei, Fake, Fulu, etc. The therapeutic agent is Streptomyces (flusilazole), difenoconazole, diniconazole, and typhus.
(5) Botrytis cinerea : The key period of prevention and treatment is pre-flowering, pre-sealing, and color-changing (and maturity). Excellent medicinal agents include tying mildew, pyrimethanil, procymidone, Baolian (polyoxymycin), ash, chlorhexidine, 25% of enemy force off.
(6) Anthrax: It is easy to be ill after early summer and grape coloring: At present, the best effective drugs are Cuixi, Enerkang, Sniper, Weixin, Anthrax, Pseudomonas, Ammonium, Anthrax Wait.
(7) Acid rot: the heading period, the coloring period, and the maturity period (10-15 days after coloring) are key points of control. If the disease occurs, the bag must be removed and the diseased part should be concentrated. Use (10% annihilation 3000 times + 80% essential 400 times + 50% chlortetracycline 3000 times) syrup squid, water and dry for a new bag.
(8) Viral disease: There are grape virus disease and tomato virus disease. In recent years, tomato virus disease has been affected by the rainy day in the grape small fruit stage (mid-May); the young fruit is infected. The agents for prevention and treatment include: virus spirit, agricultural streptomycin, phytohemagglutinin, cytokinin such as Baomeiling.
(9) Prevention and treatment of diseases such as brown blight, leaf spot, and epidemic diseases of cob, refer to the prevention and treatment of white rot and anthrax.
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