Main content and dosage form: 20%, 30%, 40%, 400g/L SC, 20%, 40% WP, 40%, 70%, 80% WDG.
Features
Pyrimethanil is an organic heterocyclic low-toxic fungicide that has three bactericidal effects: prevention, protection, and treatment. It is specially used to prevent and control gray mold diseases. Its bactericidal mechanism is to prevent bacterial infection by inhibiting the production of pathogenic enzymes, and can quickly penetrate into plant tissues to kill pathogens, thereby inhibiting the spread of disease. There is no cross-resistance with fungicides such as benzimidazole, dicarboxamide, and ethocarb. The drug has systemic conduction and fumigation effects. After application, it can quickly reach fresh and tender tissues such as flowers and young fruits of the plant to kill pathogens. The drug has a fast and stable effect, good adhesion, and a long lasting effect. Pyrimycin is not sensitive to temperature and can fully exert its efficacy at low temperatures.
Pyrimycin is often mixed with fungicide ingredients such as carbendazim, iprodione, thiram, chlorothalonil, ethocarb, zhongshengmycin, and aminooligosaccharides to produce compound fungicides.
Applicable to fruit trees and prevention and control objects
Pyrimethanil is suitable for a variety of fruit trees and is specially used to prevent and control gray mold plant diseases. At present, it is mainly used in the production of fruit trees to prevent and control: strawberry gray mold, grape gray mold, gray mold of peaches, plums and cherries, apple flower rot and scab, pear tree scab, etc.
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Use technology
(1) Strawberry gray mold
Just spray once each during the early flowering stage, full flowering stage and late flowering stage. Generally, 80~120ml of 20% suspending agent or 80~120g of 20% wettable powder is used per mu, or 30% suspending agent 60~90 ml, or 40% suspending agent or 400 g/L suspending agent 40~60 ml, or 40% wettable powder or 40% water dispersible granules 40~60 g, or 25~35g of 70% water-dispersible granules, or 20~30g of 80% water-dispersible granules, mix with 30~45kg of water and spray evenly.
(2) Grape gray mold
Spray once before flowering and after flower fall, and once before ear bagging; spray 1 to 2 times during the color change period of grape berries without bagging or 1 month before harvest, with an interval of about 10 days. Generally use 20% suspending agent or 20% wettable powder 500~700 times liquid, or 30% suspending agent 800~1000 times liquid, or 400 g/L suspending agent or 40% suspending agent or 40% wettable powder or 40% water dispersible granules 1000~1500 times liquid, or 70% water dispersible granules 2000~2500 times liquid, or spray 2000~3000 times of 80% water-dispersible granules, focusing on the ears.
(3) Botrytis gray mold on peaches, plums and cherries
Start spraying from the early stage of the disease, once every 7 days, and spray 1 to 2 times in a row. The spraying times of pesticides are the same as those for “grape gray mold”.
(4) Apple blossom rot and scab
Spray the apples once before blooming and once after the flowers fall to effectively prevent and control flower rot and scab. Then start spraying from the early stage of scab, once every 10 to 15 days, and spray 2 to 3 times in a row. The spraying times of pesticides are the same as those for “grape gray mold”.
(5) Pear tree scab
Start spraying from the early stage of the disease, or when scab diseased tips, leaves or fruits first appear in the field, once every 10 to 15 days, alternately with different types of pesticides, and spray 5 to 7 times in a row. The spraying times of pesticides are the same as those for “grape gray mold”.
Precautions
Do not mix with strong acidic agents or alkaline agents and fertilizers. When spraying continuously, pay attention to using different types of chemicals alternately to avoid the development of drug resistance in bacteria. When too high a concentration is used in a poorly ventilated greenhouse, brown spots may appear on the leaves of some crops. Pyrimycin is toxic to fish and other aquatic organisms. It is strictly prohibited to apply the pesticide in aquaculture areas. It is also prohibited to pollute rivers, ponds, lakes and other waters with residual liquid and waste liquid from washing chemical equipment. Pay attention to safety protection when taking medicine. If accidental poisoning occurs, send to hospital immediately for symptomatic treatment. The safe harvesting interval for strawberries is 3 days; the safe harvesting interval for grapes is 7 days, and can be used up to 3 times per season.
