Pyrimethanil is a traditional fungicide and belongs to the class of anilinopyrimidines. It is a fungicide with high activity in controlling traditional Chinese medicine for gray mold, tomato gray mold and blight. The mechanism of action is unique, which prevents the infection of the pathogen and kills the pathogen by inhibiting the production of the enzyme-impregnated enzyme.
It is highly effective against the commonly used non-anilinopyrimidines (benzimidazoles and carbamates) fungicides, and mainly inhibits the growth of germ tubes and mycelial growth of Botrytis cinerea. It also has a certain inhibitory effect on the spore germination of Botrytis cinerea within a certain period of time.
At the same time, it has the functions of systemic absorption and fumigation. After application, it can quickly reach the parts of the plant where flowers and young fruits cannot reach the spray, especially after adding the halogen special effect penetrant, it can increase the attachment time and penetration of the leaves and fruits. The speed is good for absorption, and the effect is faster and more stable. At present, 41% of polypyridinium-pyrimidinamine is successfully synthesized in China. In addition, pyrimethanil is not sensitive to temperature, and application at relatively low temperatures does not affect the efficacy.
The control target pyrimethanil has the functions of protection and treatment. It is a high-efficiency and low-toxic fungicide for controlling gray mold and blight. It has the functions of systemic absorption and fumigation. It can be quickly transmitted to all parts of plants after application. It inhibits the production of pathogenic bacteria infecting enzymes, thereby preventing the infection of the bacteria and completely killing the bacteria. It has no cross-resistance with other fungicides, and it has very good protection and therapeutic effect when used at low temperatures. It is used to control cucumber, tomato, grape, strawberry, pea, leeks, and other crops such as gray mold, blight, fruit black star disease, and spotted leaf disease.
Prevention and control of gray mold caused by cucumber tomato, etc. Before or after the onset, 40% of pyrimethanil 25-95g per acre, 800-1200 times of water, 30-75kg of water per mu, large plant, high dose and high water content; Small, low dose and low water volume, used once every 7-10 days, sharing 2-3 times. It takes more than 4 times to control a growing season, and should be used in rotation with other fungicides to avoid resistance. Open field medicine should be selected in the morning and evening, the wind is small and low temperature.
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