How to prevent mosaic virus in greenhouse

Planting parsley in winter greenhouses is very easy to infect mosaic virus disease. Yellow mosaic leaves appear on plants. The most serious diseases are heart and leaf, which can cause serious dwarfing of plants, no new roots, no new leaves, and longer plants. The smaller, the last withered to death. Coriander mosaic virus disease mainly depends on locust transmission. Winter locusts are seriously damaged. Therefore, cilantro is very susceptible to mosaic virus disease and spreads quickly, resulting in widespread infection. Its prevention and technical measures are as follows:

First, pay attention to seed disinfection When sowing, first 800 times 50% Bromobromide isocyanuric acid solution soaked parsley seed for 2 to 3 hours, kill the virus latent in the coriander seeds, picked up and washed, drain water sowing. In this way, the seedlings formed after the coriander seeds germinate are not susceptible to mosaic virus disease.

Second, timely control of aphids in the beginning of the leaves of parsley seedlings must be sprayed once every 7 to 10 days once 1500 times 20% imidacloprid effervescent solution, or 1000 times 3% aqueous solution of acetamiprid suspension, or 1500 times 5% An aqueous solution of nitenpyram in a water dispersant is sprayed continuously for 3 to 5 times to evenly spray all the leaves, and it is advisable to start dropping with drops of water, eliminate the aphids that are damaged on the parsley leaves, and prevent the aphids from spreading the virus. Can reduce parsley infection virus disease.

Third, pay attention to the inhibition of virus activity in the growth and development of coriander, must be sprayed once every 15 to 20 days foliar 0.1% of zinc sulfate, 500 times 5% ningnanmycin mixture, or 500 times 5% virus vaccine (mushrooms Polysaccharides) aqueous solution, or 600 times mycotoxin solution, can significantly inhibit the activity of the virus in coriander plants and reduce the occurrence and damage of parsley mosaic virus disease.

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