Identification and Prevention of Green Bean Blight
1. Epidemic symptoms: The main damage stems, leaves and capsules, occur in the vicinity of the stem section or section, especially near the ground. The diseased part was initially water-stained, and the trunk was wet and rotted around. The upper part of the diseased part was dead. When the humidity is high, the cortex rots and the surface produces white mold. At the beginning of the disease, the leaves became dark green water spotted spots, and then expanded into round brown spots with white mold on the surface. The pods were also infected with white mold and rot.
2. Control measures
(1) Selection of disease-resistant varieties.
(2) Implement rotation. The germs were mainly spread through rainwater, and they were planted in well-drained sandy loam. The sorghum deep trenches were used, and the plants were properly planted to make them airy and transparent.
(3) Chemical control. Prevention and treatment of the disease should be noted that the implementation of preventive medication, the choice of 800 times copper oxychloride, mancozeb 1000 times, sprayed at the seedling stage, flowering and pod spray 2-3 times. Early onset of spraying protection. 58% ledomemi manganese zinc soluble powder 500-800 times, 64% anti-virus WP 500 times, 72.2% Prec fluid 800 times, can be sprayed once every 7-10 days, continuous 2- 3 times, the effect is better.
2. Control measures
(1) Selection of disease-resistant varieties.
(2) Implement rotation. The germs were mainly spread through rainwater, and they were planted in well-drained sandy loam. The sorghum deep trenches were used, and the plants were properly planted to make them airy and transparent.
(3) Chemical control. Prevention and treatment of the disease should be noted that the implementation of preventive medication, the choice of 800 times copper oxychloride, mancozeb 1000 times, sprayed at the seedling stage, flowering and pod spray 2-3 times. Early onset of spraying protection. 58% ledomemi manganese zinc soluble powder 500-800 times, 64% anti-virus WP 500 times, 72.2% Prec fluid 800 times, can be sprayed once every 7-10 days, continuous 2- 3 times, the effect is better.
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