Symptoms can develop from the seedling stage to the maturity stage. The main damage stems and pods, but also damage the leaves or petioles. The stem was infected with a diseased brown spot, and the dark cloth was irregularly arranged with black dots. The small black spots of the fleas were arranged in a roulette pattern and the diseased pods could not develop normally. During the seedling stage, Ziji disease is dark brown and has a slightly lighter edge. After the lesion has spread, it often appears cracks or dents; lesions can spread from the cotyledons to young shoots and die above the diseased part. The leaves were dark brown on the edges and pale brown inside. The petiole is brown and irregular. The pathogen G10merella glycines (Hori) Lehman et Wolf describes a small cluster of soybean shells belonging to the genus Ascomycotina. Asccus shell spherical, a number of poly-generated in the cortex sub-diameter, diameter 180-340μm. The ascendum is oblong to stick-like and has a size of 30-1067-13.5 (μm). Ascospores are colorless, with many black or dark brown bristles around and 100-200 μm long. Spore stalks are colorless and short. The conidia unit cells are colorless, sickle-shaped, with a size of 16-253.7-4.5 (μm). Transmission routes and pathogenic conditions The pathogens in winter are sown on soybean seeds and diseased bodies, and can be infected after sowing the next year. The temperature is 25°C. Germs cannot develop below 12-14°C or above 34-35°C. On the production of seedlings at low temperature or excessive drying of the soil, the time for soybean germination and excavation is delayed and it is easy to cause seedling disease. The warm and moist conditions of adult plants favor the infection of the bacteria. Control methods (1) Selection of disease-resistant varieties and disease-free seeds. (2) After the harvest, remove the diseased body and deepen it in a timely manner, and implement the rotation for more than 3 years. (3) Chemical control Seeds are sown with 0.5% seed weight of 50% carbendazim WP or 50% acetaminophen wettable powder before sowing and mixed for several hours. It is also possible to spray 25% carbon tetrachloride wettable powder 500 times or 47% Garnett wettable powder 600 times after flowering. Steel Stacking Commode,Stacking Commode Chair,Steel Stacking Commode With Potty,Steel Frame Stack Commode Chair Active Life Healthcare Co.,Ltd , https://www.alh-med.com