The pea pods have been favored by most vegetable farmers for their high economic efficiency, but many vegetable farmers have caused troubles in replanting due to the untimely prevention of certain diseases of bean pods. Therefore, relevant experts reminded bean growers everywhere to be cautious Good bean disease prevention work ensures a good harvest.
The diseases that occur in spring beans are as follows:
Red bean root disease
The disease occurs at the seedling stage, and the seedling sensation causes the base of the seedling stem to become reddish-brown and severely concave.
Control methods
Want to avoid this kind of disease, when the seedlings of seedlings just unearthed, in a timely manner to remove the bean seed coat clean (plants with a seed coat is prone to red root disease), and then is to increase the temperature, the ground temperature is controlled at 16 °C above , to ensure that the root system can be normal activities, seedlings grow enough nutrients, their resistance to disease increased.
Bean rust
The disease mainly damages the leaves. At the beginning of the disease, the leaves bear pale yellow spots and then turn into rust-brown. After the formation of small pustule-like uplifts, they are red-brown powder after scraping. The pathogen is the genus Monochoria spp. Parasitic bacteria only harm the beans (kidney beans). When the average temperature on the day reaches 21 to 28°C and the humidity is high, this disease can occur for 5 consecutive days.
Control methods
Use appropriate ventilation methods to avoid blind ventilation in sunny mornings. Take advantage of the opportunity to raise the temperature of the shelf to 35°C or higher for about 2 hours, and then open the ventilation outlet. This reduces the temperature of the shelf and can effectively reduce the shed. Internal air humidity reduces germ transmission. In the early stage of disease, 50% sulphur suspension can be sprayed 200 times, or powder must be used for prevention and treatment.
Anthracnose
The disease mainly occurred in the stem vines of the beans, resulting in long lesions. The diseased part was initially purple-red, depressed, and severely red-brown. This disease is mainly found in the seedling stage of bean pods. When the shed temperature reaches 17 to 27°C, it is most susceptible to disease (especially when there is much dew and high air humidity occurs). If the temperature is lower than 13°C, the infection stops.
Control methods
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