Onion rust disease pathogens mainly damage leaves, stems, and green stems, but also damage onions, leeks, garlic and so on. The main control methods: One: Two years or more of crop rotation with non-onion and garlic vegetables. Second: Apply organic fertilizer, increase phosphorus and potassium fertilizers to improve the host disease resistance. Three: In the early stage of onset, spray 15% triadimefon WP 2000-2500 times, control once every 7-10 days, and continuously prevent and treat 2-3 times. Second-Hand Rapier Loom,Air Jet Loom,Water Jet Loom,Electronic Jacquard Machine,Second-Hand Weaving Machine,Textile Machinery Changzhou Satidi Import and Export Co., Ltd. , https://www.guanjiejts.com