Tomato planted in winter is very susceptible to M. blight, forming grey-green to dark-green, water-stained, moire-like, large-scale lesions on the fruit, with concentric ring-streaks, diseased white moulds, decayed flesh, and fruit shedding. Therefore, the tomato planted in winter should pay attention to the control of M. blight. Specific prevention methods are as follows:
In winter, during the fruiting period of tomato flowering, attention was paid to the inspection of tomato fruit. When a large grayish-green to dark green water-busted mottled spot appeared on the fruit, a 500-fold 0.5% Kositikaine aqueous solution was sprayed on the foliar, or 3,000. Times 99%?faming WP aqueous solution, or 600 times 72% urea MnZn wettable powder aqueous solution, or 800 times 80% Mancozeb WP aqueous solution, or 600 times 50% melamine Mn An aqueous wettable powder solution, or 800 times as much as a 69% aqueous solution of magnesium adenoyylzide wettable powder, or 500 times as much as 52.5% of fazobactam cream, an aqueous solution of urea cyanide dispersible granules, or 800 times of a 64% aqueous solution of antimony bismuth wettable powder. Control, spraying once every 7-10 days, continuous spraying 2 or 3 times, evenly spraying all the leaves and fruit, that can effectively control the occurrence and damage of tomato M. blight, protect the fruit.
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