ADDRESS:19th Floor, Fudi Center, Shouguang City, Shandong Province
The leaf, petiole, stalk and fruit of tomato were damage by powdery mildew. At the beginning of the leaf is a small green spot, enlarged after the irregular powder spots, on the white floc, namely mycelium and sub-spore stem and conidia. The initial mold layer is sparse, gradually dense after the felt-like, the disease plaque enlarged or covered with the entire leaf. Some of the disease spots occur in the back of the leaf, the front of the disease is yellow-green edge is not obvious plaque, after the whole leaf browning dead. Other parts of the disease, the surface also produces white powdery mildew plaque.