When the grape sprouts are just sprouting, when the new leaves have just been developed, when the new leaves are fully unwound and green and mature, and the panicles have been extracted about 8 to 10 cm long, it is necessary to spray 1500 to 2000 times 33.5% quinoline copper once. Suspension Aqueous Solution or 1:1:200-fold Bordeaux Solution, 600-fold 70% Procezine Zinc Wettable Powder Aqueous Solution, 2500-3000-fold 10% Difenoconazole Aqueous Dispersible Pellet Solution, 3000-4000-fold 12.5% ​​Dimethiconazole Alcohol WP aqueous solution, 800-1000 times 5% amide azole EC solution, 800 times 70% thiophanate-methyl WP aqueous solution, etc. It is required that all sprouts, shoots, and spikes should be sprayed evenly to start dropping drops of water. If it rains within 4 hours after spraying, it should be sprayed once to improve the control effect. Due to the high drug resistance of grape black spot disease, and it is easy to produce drug resistance, so the drugs should be used interchangeably. Do not use the same drug more than once in a row to avoid reducing the control effect. If you can add 0.2% ~ 0.3% potassium dihydrogen phosphate aqueous solution with the spray, the effect is better.
As a professional manufacturer of plant extracts, Insen biotech can supply lots of plant extracts and customize hundreds of proportional extract according to customers' needs, such as 4:1, 10:1, 20:1, 50:1 and others. These plant extracts are widely used in food, beverage and healthcare capsules or tablets. If you have any needs about any plant extracts, please contact Insen freely, and welcome to visit our factory.
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