Green beans and sprouts in peas are popular with consumers. However, in the production process, quality and output are often affected by some physiological barriers and pathogen invasion. If bud blight is also called wet rot or rot disease, there are two obvious symptoms. First, 2 to 6 cm at the top of the shoot, watery morbidity appears. When the climate is dry, the decayed part shrinks quickly. Hanging on the top of the stem, when the rainfall or air humidity regains, the diseased department will show symptoms of wet rot; Second, the incidence of pups, quail surrounded by gray and white velvet mold layer, the middle folder with black granular cysts and Sporangia, with yellowish pods in later stages. The disease spreads from the pedicle to the stalk, and when the humidity is high, many peas with grayish-white, half-brown and yellowish pods are seen.
Causes of morbidity are: low temperature, low illumination, and high humidity induced disease; second, there are mycelia in the soil or joint spores provide winter pathogens; third, there are pathogens that can invade the pea plants; fourth, wind and rain can be Accelerate the spread of germs; Fifth, insects help spread disease.
Prevention technology can be started from agricultural control and chemical prevention.
From the perspective of agricultural measures, first, peas should not be weighed and heavy, and crop rotation should be implemented. It is best to use paddy crop rotation. Second, the field with higher fertility should be properly reduced in density to prevent shading. Third, the sizing ditch should be timely. Drainage; Fourth, prevent flooding during drought. Pay attention to the "dry flower wet plate", that is, maintain the ventilation and light transmission during flowering, reduce the humidity, and make it moist enough to maintain moist management.
In terms of chemical prevention and control, the first is to spray 64% antivirus WP 400 to 500 times in the initial stage; the second is 75% chlorothalonil wettable powder 600 times; and the third is 58% metalaxyl MnZn Wet powder 500 times liquid; 4 is 70% EB phosphorous zinc wettable powder 500 times liquid; Fifth, when it is resistant to certain bactericides, it can use 69% ank manganese zinc 1000 times.
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