How to prevent chili virus disease
There are two main types of pepper virus disease:
One type is mosaic necrosis. Caused by tobacco mosaic virus. Diseased leaves appear irregular chlorosis, dark green and light green mosaic disease, some brown necrotic spots appear on the leaves, from the main veins of the leaves appear dark brown necrotic stripe along the stem, resulting in falling leaves, falling flowers, falling fruit, resulting in The whole plant died.
The second is that the leaves are deformed. Plant deformation caused by CMV infection, manifested as diseased leaves thickened, smaller or fern leaves, veins chlorosis, shrinkage, uneven lines, internode shortening, dwarfing, branches and leaves clusters shape. The diseased fruit shows spotted or necrotic spots that are deformed and fall off easily.
Control methods: Select disease-resistant varieties, appropriate sowing, cultivating strong seedlings, early planting to promote early-onset, appropriate density, increase the application of phosphorus and potassium fertilizers, water pouring, to avoid lack of fertilizer and water. Pay attention to the peak period of virus disease at the peak of the results. During the period from May to June, we must pay attention to dry hot air, spray potassium dihydrogen phosphate in time and cool it by watering.
Chemical control. The NS-83 antagonizing agent can be used 100 times, need to prevent three times, the first time in 10-15 days before planting, the second time after planting until easing, and the third time in the early stage of fruit. It is also possible to spray 0.1% zinc sulphate once in each of the three phases, and also have a certain control effect, or 20% virus A WP 500 times, and 1.5% plant disease emulsion 1000 times. At the same time to control locusts in a timely manner
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