Second, prevention and control measures 1. Rotation of crop rotation can reduce the accumulation of germs and help prevent disease. 2. Strengthen the management of the field and apply sufficient organic fertilizer, increase the application of phosphorus and potassium, promote the full length of the plant, and increase the resistance to disease. Appropriately sparse and improve ventilation and light transmission conditions. After watering, pay attention to ventilation and humidity. Excessive humidity is conducive to disease occurrence. Heavy land can be harvested in advance to control the further development of the disease. After the harvest, we must clean our pastoral gardens, remove diseased leaves and debris in time, and bring them out of the fields to be deeply buried or burned to reduce the re-infestation of pathogens. 3, the early stage of the prevention and treatment of chemical agents can be used 15% triadimefon 1000 times wettable powder, or 25% Triadimefon 2000 times. 45% of the particulate sulphur rubber suspension 350-400 times the liquid or 97% of the enemy rust sodium 200 times, every 6-7 days, once sprayed 2-3 times. BTE Hearing Aid BTE Hearing Aid Shenzhen Sunshine Technology Co.,Ltd , https://www.yatwinsz.com
Symptoms and Control Measures of Leek Rust in Sunlight Greenhouse
First, the symptoms: amaranth induced disease mainly damage leaves, pedicels. At the beginning of the disease, small spots with spindle-shaped to orange-orange yellow uplifts were produced on the leaf surface. The uredia spores had a yellow halo around the lesion, and later developed into sore spots. Finally, the epidermis ruptured and orange-yellow powder was scattered. Lesions can occur on both positive and negative sides of the blade. When severe, the lesions can be connected together and the rust can spread like a mist.