In addition to nutritional reasons, the yellowing of garlic leaves may also be related to repeated cropping, fertilizer damage, pesticide damage, and pests. 1. Nutrient deficiency and fertilizer damage. Yellow leaves will appear when garlic is lacking in nitrogen, potassium, calcium, magnesium and other elements at the seedling stage. Fertilizer damage can also cause yellow leaves. For example, excessive nitrogen fertilizer will produce a large amount of ammonia under high temperature conditions, which will lead to poisoning and death of seed cloves and garlic seedlings. Therefore, we must pay attention to reasonable fertilization, and pay attention to the application of organic fertilizer and biological bacterial fertilizer. 2. Repeated cropping. Continuous cropping will not only cause yellow tips on garlic seedlings, but also cause other diseases, and it will not grow well, which will affect yield and quality. Pay attention to scientific crop rotation. 3. Diseases and pests. The pests that cause yellow leaves are mainly ground maggots, a large part of which is caused by the application of immature manure. In order to reduce the damage of ground maggots and other underground pests, while applying decomposed manure, phoxim EC can be added for control. If it has occurred, you can choose 90% trichlorfon 800 to 1000 times liquid, pyrethrin 400 times liquid, 48% Le Spen Emulsifiable concentrate 1000 times liquid irrigating roots for prevention and treatment. The diseases that cause yellow leaves mainly include blight, leaf blight, bacterial soft rot, etc. The effective agents include thiazolium copper, and tetrazole. 4. Other reasons. Herbicide damage, low temperature and high temperature will cause the leaves to turn yellow during the seedling stage of garlic. At the same time, during the retiring stage, if the root system absorbs insufficient nutrients, the leaves will appear "yellow tips". Pay attention to nutritional supplements, topdressing and spraying fat. Disclaimer: Some articles on this website are transferred from the Internet. If the legal rights of a third party are involved, please inform this website for processing. phone External Flat Thread Sunshade Net Series External Flat Thread Sunshade Net Series,Sun Shade Net For Agricultural,Knitted Black Scaffold Shade Net,Construction Safety Debris Netting Changzhou Green Nets Co.,Ltd. , https://www.gnshadenet.com