How to prevent and control strawberry viral diseases? A summary of the latest control measures
Strawberry viral disease is one of the more difficult diseases to control during the strawberry growing period, and it often brings huge economic losses to farmers, so farmers should strengthen control measures against this disease. Below, let's take a look with the editor at the symptoms, causes, and control measures of strawberry viral disease.
1. Symptoms
After strawberry plants are infected by a single viral disease, the symptoms are often not obvious. However, after compound infection by multiple viruses, they show symptoms such as weak growth and degeneration, insufficient expansion of new leaves, dull leaves, loss of green color and yellowing, shrinkage and distortion, dwarfed plants, fewer fruit set, and low fruit yield. The symptoms of strawberry viral disease vary. The common ones include Strawberry mottle virus, Strawberry mild yellow edge virus, Strawberry vein banding virus, and Strawberry crinkle virus. The four have different symptoms, but they often lead to reduced strawberry yield and quality.
2. Causes
There are many reasons strawberry viral disease occurs. First is the cause of seedlings. When planting, if the seedlings carry viruses, the viruses continue to multiply in the seedlings, and once the environment becomes unsuitable, the disease develops quickly and can also infect other plants through soil and water flow. In addition, pests such as aphids, thrips, tobacco whiteflies, and nematodes can also be vectors for the spread of viral disease. When they damage strawberry plants, they may also transmit the virus. This is the most important reason viral disease is difficult to control: as long as pests are present, they can continue to spread it. In addition, high-temperature and drought environments also easily induce viral disease. Poor high-temperature and drought conditions cause poor plant growth, reduce plant resistance, and make plants highly susceptible to viral disease.
3. Control measures
For seed selection, choose disease-resistant varieties and plant virus-free seedlings. During propagation, strictly remove diseased seedlings, and do not introduce seedlings from severely diseased areas or severely diseased fields. After planting, strengthen field inspections, and once diseased plants are found, promptly pull them out and burn them. In the early stage of the disease, begin spraying. Commonly used pesticides include ribavirin emulsifiable concentrate and morpholine guanidine hydrochloride · copper wettable powder, applied every 10-15 days, for 2-3 consecutive times. In addition, aphid control needs to start from the seedling stage. For aphid control in greenhouses, it is best to use botanical insecticides to reduce harm to pollinating bees.
The above is an introduction to control measures for strawberry viral disease. We hope it can help you. To learn more related knowledge, please keep following us.