1. Symptoms

Radish virus disease occurs as a whole plant, and the damaged leaves appear dark green and light green stripes, sometimes deformed, and some produce ear-like protrusions along the veins of the leaves.

2. The route of transmission and the law of disease

The disease is mainly caused by the infection of Turnip Mosaic Virus (TUMV), Cucumber Mosaic Virus (CMV) and Radish Ear Mosaic Virus (RIMV). All three viruses can be transmitted through the juice produced by friction. Radish ear bump mosaic virus can also be transmitted by yellow beetle and cucumber eleven star leaf beetle. Cucumber mosaic virus and turnip mosaic virus can also be transmitted by green peach aphid and radish aphid. In the years of high temperature and drought, the occurrence of aphids and yellow striped beetle is large or the field management is extensive, the plant growth is poor, the disease resistance is weak, and the disease is serious.

3. Control methods

(1) Selection of improved varieties: selection of disease-resistant varieties, strengthening of cultivation management, and early sowing at the right time.

(2) Plastic film coverage: timely control aphids (like), yellow striped beetle or seedling stage, use silver gray film, plastic reflective film, and lead light paper to reflect light to avoid aphids.

(3) Chemical control: spray with 20% virus A wettable powder 500 times solution, or 1.5% Zhibingling emulsion 1000 times solution, or 83 inhibitor 100 times solution spray, spray once every 10 days, continuous Spray 3 to 4 times. (Reproduced)