Celery virus disease, also known as mosaic disease, is more common in summer and autumn cultivation, and the damage is severe in high temperature and drought years, which significantly reduces the yield, quality and commodity value of celery.
symptom
The whole plant is infected. The early leaves are shrunken, showing thick, light green mottled or yellow spots, and manifested as obvious macular mosaic leaves. In severe cases, the leaves of the whole plant are shrunken or yellowed and dwarfed.
pathogen
It is caused by cucumber mosaic virus (CMV) and celery mosaic virus (CeMV) infection. The mosaic symptoms caused by the two pathogens are similar. In addition, foreign reports also have celery latent virus (CeLV), celery yellow spot virus (CeYSV), strawberry latent ring spot virus (SLRSV), tomato black ring virus (TBRV), tomato spotted wilt virus (TSWV), celery yellow Internet virus (CeYNV) etc. cause various viral diseases.
Transmission routes and disease conditions
CMV and CeMV are mainly transmitted by aphids in the field, and can also be transmitted by manual contact and friction. Poor cultivation and management conditions, drought, high number of aphids and severe disease.
Prevention method
Mainly take measures to prevent and avoid aphids. The second is to strengthen water and fertilizer management, improve plant disease resistance, and reduce damage. If necessary, spray 300 times liquid of 2% amino oligosaccharin liquid or 400 times liquid of 1.8% cyprodil acetate water, or spray 100 times liquid of pure biological agent Lvdikang (antiviral type) before the onset of the disease, every 5 to 7 days Once, it can bind to the receptor protein on the cell membrane of the plant, stimulate the activity of various enzymes, improve immunity, achieve the effect of inhibiting virus replication, and quickly prevent the symptoms of leaflets, curling leaves, dwarfing, and yellowing.
