Symptoms: The cotyledon of the seedling stage produces a round or ovoid water-soaked lesion that is slightly sunken and then brownish to wither. In the adult stage, the size of the needle on the primary needle is immersed in water. The lesion is enlarged and limited by veins. The shape of the lesion is polygonal, yellowish-brown, and when the humidity is high, milk mucus is produced on the lesion on the back of the leaf and forms a white film or white powder after drying. In the late stage, the lesions are brittle and easy to perforate. Stem, petiole, and young melon strips are immersed in lesions. They are nearly round to elliptical and pale gray in color. The lesions often crack. When the damp, the diseased parts of the melon strips overflow with bacilli, and the lesions spread to the interior of the melon strips. The discoloration of the flesh along the vascular bundle extends up to the seeds, causing seeds to colonize. The diseased melon later decayed and smelled, and the young melons often rot and fall off after being killed. Bacteria in the soil spread through the fields through irrigation, wind and rain, airflow, insects and agricultural operations. The bacteria invade the host from stomata, wounds, and water holes. The suitable temperature for onset of illness is 18-26°C, and the relative humidity is 75% or more. The greater the humidity, the heavier the disease, and the more susceptible to the disease after a storm. Low-lying terrain, poor drainage, heavy smashing, excessive nitrogen fertilization, insufficient potash fertilizer, planted dense plots, and severe diseases. Control methods: Spray neophytin 5 000 times at the beginning of the disease, or 30% copper citrate ferric chloride (DT sterilization) WP 500 times, or 77% to kill WP 400 times, or 47 % Garenon WP 600-800 times, the above agents can be used alternately, spray once every 7 to 10 days, continuous spray 3 to 4 times. Excessive use of copper preparations can cause phytotoxicity, generally not exceeding 3 times. The spray must be carefully sprayed on the front and back of the blade to improve the control effect. Squid Steak,Baked Calamari Steak,Calamari Steak,Calamari Steak Resepte Zhejiang Industrial Group Co., Ltd. , https://www.xingyeseafood.com