Symptoms: Damage to tomato leaves, petioles, stems and fruits. In the early stage, the leaves showed faded green dots, followed by irregular patches and white floc. The mildew layer is sparse, densely felt-like, with lesions contiguous or covering the entire leaf surface. Some of them are on the back of the leaves, and their yellow-green edges on the front of the leaves are not obvious, and the posterior leaves turn brown and die. In other parts of the disease, the surface of the diseased part also produces mildewy mildew. Pathogen: Fungi (Brassica fuliginea). Prevention methods: (1) Clean the greenhouse, reduce the bacteria source in the greenhouse, remove the diseased residues in the greenhouse and weeds in the greenhouse after the harvest, and carry out deep-buried or incineration. (2) spraying prevention and treatment at the early stage of disease. The agent can be used 50% carbendazim wettable powder 600-800 times, 10% difenoconazole water dispersible granules 2000-3000 times, 15% triadimefon (triadimefon) wettable powder 1000 times. Spray once every 7-10 days, continuous control 2 or 3 times. The above agents can be used in turn to prevent germs from developing drug resistance. Peptides,Human Growth Hormone,Melanotan2,Ghrp Shaanxi Hongbaiyi Biotech Co., Ltd. , https://www.sxhongbaiyi.com