The best defense against gray mold in spring

In the late winter and early spring, the weather is changeable, and the temperature rises in a wave-like manner, accompanied by rain, and the humidity is high. The leeks are easily infected with gray mold, and the stems and leaves are covered with gray moldy material that rots, softens, and lays down, resulting in loss of production. Rapid spread, so that the whole field disease. Therefore, at the beginning of winter and early spring, we must pay attention to the prevention and control of leek gray mold to protect the stems and leaves.

Usually pay attention to the inspection of the stems and leaves of leeks and found that there are gray moldy shoots on the stems and leaves, when the stems soften, lodging, rot, it is necessary to spray 1500 times 50% aqueous solution of procymidone WP or 1000 times 45% Iprodione WP wet solution, 1500x 50% Mytilen wettable powder solution, 1000x 40% pyrimethanil suspension aqueous solution, 500x 65% Tamyroxin WP aqueous solution, 500x 0.5% small scavenger water Aqueous solution, etc. for prevention and treatment, every 7 to 10 days, foliar spray once, continuous spraying 2 to 3 times, evenly spray all the stems and leaves, in order to start dropping drops is appropriate.

When rainy days are encountered and the humidity is high, it is necessary to seize the instant sunny foliage and spray the above-mentioned fungicide once for prevention to protect the stems and leaves. If you can add 0.2% to 0.3% potassium dihydrogen phosphate aqueous solution in the liquid with the spray, better control effect, can not only enhance the efficacy of sterilization and treatment, improve control effect, but also enhance disease resistance, speed up the disease stem The leaves resume normal growth, and they can also provide nutrition from the foliage, promote the growth of stems and leaves, increase yield, and improve quality.

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