Tomato canker disease is also called "bird's eye spot", and it can occur from the tomato seedling stage to the fruiting stage. North Pacific Squid,Ommastrephes Bartrami,Frozen Ommastrephes Bartrami,Neon Flying Squid Zhejiang Industrial Group Co., Ltd. , https://www.xingyeseafood.com
Seedling infection began at the margin of the leaf and gradually wilted from the lower part, and some produced ulcer-like depressions in the hypocotyl or petiole, and the pathogenic strain was dwarfed or withered. Plants infected, the bacteria rapidly expanded in the phloem and pith, the lower leaves of the disease withered or curled, like a lack of water, one or part of the leaflets withered; stems inside brown, extending up and down, the length of a section Expanded to a few knots, later produced a cavity of varying lengths, finally sunken or cracked, stem slightly thicker, giving birth to many adventitious roots. When the humidity is high, fungal pus overflows from the stem or petiole or attaches to it, forming a white stain. Later in the stem, it becomes brown and hollow, and finally the whole plant withers, and the upper parietal leaves are blue and dry. The stalks are affected by many stems. The phloem and medulla appear brown rot that can extend into the fruit, resulting in young fruit shrinkage, diapause, malformation and seed colonization. Sometimes caused by local infestation, necrotic patches on the surface of the bracts, the surface of the fruit can be seen slightly elevated white dots, a single lesion diameter of about 3 mm, the central brown embolization of protrusions, known as "bird's eye spots", sometimes attached to Together form an irregular ward. Bird's eye spot is a specific symptom of tomato ulcer disease. It is caused by re-infection and does not necessarily occur with a stem system infection.