Loofah virus disease: Loofah virus disease can be transmitted through aphids, agricultural operations and sweat contact. Symptoms The diseased leaves are light green and dark green with a faded green ring. The old leaves exhibit yellow ring-shaped spots or yellow-green leaves. The veins twitch and twist, causing twisting of the leaves. Malformation, brownish green lesions on the leaves. When the disease is severe, the leaves become hard and brittle, the edges of the leaves become deep and the dead spots are produced in the later period. Occurrence of the main damage to the young loofah leaves, caused by a variety of viruses, cucumber mosaic virus, tobacco ringspot virus invade the host more, the virus can overwintering in many weeds, spring locust spread the virus to the loofah on the harm. The occurrence of locusts in that year was serious, and the occurrence of loofah virus disease was heavy. Control methods: Apply enough base fertilizer before planting, apply appropriate phosphorus and potassium fertilizers, eradicate the weeds in the field and surrounding areas, remove the diseased plants when they are applied to the top, and wash the hands with soapy water after touching the diseased plants and then contact with the healthy plants. (1) Select resistant varieties. (2) Cultivate disease-free strong seedlings and appropriate early planting; (3) Prevent and control aphids in time; (4) Apply 20% virus A warming powder 500 times liquid and 5% bacteria water clearing agent 500 times early in the disease; Can be used 15% Zhilingling 1000 times, spraying streptomycin 300-400 times. Hybrid Stepper Motors,Brushless DC Motors,Linear Motor,Gear Motor,Step-Servo Motors,Brushless Motors Changzhou Satidi Import and Export Co., Ltd. , https://www.guanjiejts.com
The prevention and control points of loofah virus disease