The celery had lesions. The lesions were initially light brown and stained with small spots. After expansion, the outer edges of the lesions were tan-brown, yellow-white to gray-white in the middle, and the edges were obvious. There were many black and small spots on the lesions. The celery spot blotch, also known as leaf blight and late blight, is an important disease of celery in winter and spring protected areas and needs to be prevented and treated in time. Control methods: 1 Remove diseased bodies in time, collect seeds from disease-free and disease-free plants, carry out 2-3-year rotation, and disinfect seeds, soak or seed with green hengheng-1 or green hengmiaofu. 2 selection of disease-resistant varieties: such as Jinnan real celery, Celery 3, Chunfeng and so on. 3 agricultural control: clean the garden, timely removal of diseased leaves. Apply organic manure as base fertilizer, pay attention to the application of boron fertilizer, strengthen field management, cultivate strong seedlings, and strengthen the disease resistance of plants. 4 Shelter cultivation in protected areas, pay attention to ventilation, temperature and humidity, and proper amount of water, both to meet the needs of the growth and development of celery, but also inhibit the occurrence of pathogenic bacteria. 5 Pharmacy control: early disease prevention when there is no disease, 3-4 cm in the seedling spray protection; early disease prevention and treatment in time. Fruit flavored drinks and snacks are always children's favorite. Our fruit and vegetable powder is often used to make these two kinds of products. Because it not only retains the fruit flavor, but also is particularly healthy, does not contain any additives, so it is loved by friends of all ages. This kind of product mainly has: strawberry powder, cherry powder, blueberry powder, orange powder, coconut powder, Pineapple Powder and so on. Hibiscus Extract Powder,Hibiscus Extract,Organic Hibiscus Extract,Hibiscus Flower Extract Xi'an Longze Biotechnology Co., Ltd. , https://www.bestbilberry.com
The control method of celery spot blight