Harmful symptoms Cucumbers may develop during the entire growing season, but the incidence is highest when the vines reach the result stage. At the seedling stage, the two cotyledons showed uneven yellowing, wilting drooping and distortion, roots and rhizomes were rotted and browned and contracted, plant growth stagnated, severe wilting of the entire plant withered, and the occurrence of tumbling. When the soil is moist, white hairs appear on the rhizomes, which are the mycelia and conidia of the pathogen. Most of the diseased plants began to show symptoms from the flowering stage. The diseased plants grew slowly. The yellowing of the lower leaves gradually developed upwards. They began to wilt drooping at noon and seemed to lack water. However, the wilt leaves recovered sooner or later, and the wilt leaves gradually increased and gradually spread throughout. The strain caused the whole plant to die. In the later period, the stem of the main vine is longitudinally split, and the vascular bundle becomes brown in the stem of the longitudinal disease. When the humidity is high, the surface of the diseased part appears white or pink moldy material, ie, the pathogenic bacterial fruit body. Sometimes the disease spills a little amber gum. Stem bases and roots turn yellow-brown, rot, and can easily be pulled out of the ground. The prevention and control technology implements comprehensive prevention and control measures based on rotation. Chemical control: In the early stage of disease, the diseased strain was burned and the diseased point was disinfected with quicklime and formalin. Irrigation of other plants with 10% double-effect Ling Shui agent 200 times; 50% carbendazim WP 500 times; Bitter wilt 600 times; 70% Dixon 400 times; 25% resistance 500mg of dying fluid; 50% thiophanate-methyl WP powder 400 times; 60% DTM WP 350 times or 0.01% NR 120 irrigated roots; 0.3-0.5 for each strain l, once every 7-10 days, continuous prevention and treatment 2-3 times. It can also be sprayed with 75% chlorothalonil 600 times or 36% thiophanate-methyl 400-500 times. In addition, it can be applied with procymidone, root or spray. Spraying foliar-bamboo, green-wind 95, must-have, potassium dihydrogen phosphate and other foliar fertilizers can significantly increase plant resistance. Pet Sofa Bed,Cat Sofa Bed,Large Dog Sofa,Large Dog Couch YIWU CHUANGCHENG IMPORT&EXPORT CO.,LTD , https://www.tradingsix.com