Tomato canker disease, also known as bird eye disease, is a bacterial disease. The pathogens overwinter on the seed or on the sick and invade the implant through the epidermis wounds, and are transmitted by means of introduction, nursery and rainwater. The main symptoms: ulcer disease can damage leaves, stems and fruits. The diseased leaves resembled dehydration-like curls, and some plants withered on one side of the leaves. The medullary stem of the diseased stem turns brown and rotten, or a whiteish purulent outflow occurs when the adventitious roots of the stem are crumbling and growing. The diseased fruit grows slightly from the garden, its edge is white, the central part is brown (like the bird's eyes, it is also called bird's eye disease). In the later period, the flesh rots, and the seeds carry bacteria, and some young fruit shrink and stop. Control measures: 1. Tomato canker is a quarantine disease, so seed and seedling quarantine should be strengthened: 2. Carefully clean the garden, select resistant varieties, promote soilless seedlings or bed soil disinfection, and disinfect the seeds. 52°C water stirring soaking for 30 minutes, or 200 milligrams per kilogram of streptomycin sulfate soaking for 2 hours); 3, implement rotation of vegetable field for more than 3 years, or use wild Fanru as an anatomy for grafting: 4. Streptomyces for colonization Su Shuiling Dingling (each farm streptomycin 15 kg water). 5, ulcer disease at the beginning of the disease, 72 can be used streptomycin WP 400 spray. Collagen is the most abundant protein in mammals, accounting for 25% to 30% of the total protein. It is widely present in all tissues from the body surface of lower vertebrates to mammalian bodies. Collagen monomers are long cylindrical proteins with a length of about 280 nm and a diameter of 1.4–1.5 nm. It consists of 3 polypeptide chains that are supercoiled around each other. Collagen,Collagen Peptides,Collagen costco,Collagen Peptide Products YT(Xi'an) Biochem Co., Ltd. , https://www.ytwholefood.com