Chick virus disease is a relatively serious disease in pepper production. After the pepper has been affected, it causes falling, falling fruit and falling leaves. General reduction of production by 20-30%, severe reduction of 60-70%, early infestation of plants, can cause no harvest.
Symptoms: The cayenne pepper virus is one of the most important diseases of chili peppers. It has a great harm to the peppers. It causes dwarfing of the plants, dark leaves of the flowers and leaves, and necrosis and shedding of the leaves in the early stage. It causes the vines, fern leaves, buds and young fruit to wither. Yellow leaves. When the onset is severe, the reduction in production is obvious or even unacceptable. There are three types of common symptoms: (1) Mosaic leaves show obvious yellow-green spotting, shrinkage, or brown necrotic spots. (2) Leaf blade malformation or vegetative clustering begins when the leaf veins of the plant retreat, gradually forming uneven mottle, leaf shrinkage, thickening of the later diseased leaves, resulting in yellow-green mottled or large-sized tawny necrotic spots, leaf margins. Curl up. The young leaves were narrow and severely linear, and the upper part of the plants were clustered and short-sect. Severe disease fruit surface with uneven green spots and verrucous protrusions. (3) The main veins of the stripe-shaped leaves are brown or black necrotic, extending to the lateral branches and the main stem along the petiole, showing necrotic streak spots, often causing early fall, falling, fruit drop, and the whole plant withered when severe.
Prevention and control measures: crop rotations, rotations, heavy land masses, promotion of non-sweet potato vegetables for 2-3 years of rotation, to reduce the source of field bacteria.
Pre-seeding seed treatment: Before germination sowing, first soak the seed with water for 3~4 hours, and soak it in 10% trisodium phosphate solution for 20~30 minutes. Rinse and rinse with clean water before germination.
Strengthen cultivation and management: Cultivate disease-free strong seedlings, implement single-plant single-bearing nutritious soil nursery, and planting plants with pods. Increase the use of fully cooked organic fertilizer to promote early-onset hair growth. In the nursery and early planting stages, due to strong sunlight, it is necessary to cover the shade net. Ventilate around the greenhouse, especially when the temperature is high at noon. At the time of colonization, the diseased plants were found to be removed promptly.
Preventing human transmission of toxic substances: In farm operations, hands and tools that have contact with infected plants should be washed with soapy water. Smoking growers should wash their hands with soapy water before carrying out agricultural operations to prevent infection.
Timely chemical control: timely control of aphids, cut off the source of the virus. When locusts are found in the field, they are immediately prevented and treated. 10% of the heroin is used, 10% of the konjac powder is used in the amount of 10-15 grams per mu, and the water is 30-40 kg. The spray is even. If the weather is dry, the amount is large. When it comes to continuous spraying and prevention. In the early stage of disease, use 15% of plant disease Lingling agent 100 ml per mu or 20% of virus A WP spray 70 to 100 grams per mu, spray once every 5 to 7 days, and spray 2 or 3 times.
Clean up the pastoral areas: remove debris after harvest, bring them out of the field and burn them deep, or deepen the soil to speed up decomposition of the diseased body.
Plant extracts refer to substances extracted or processed from plants (all or a part of plants) using appropriate solvents or methods. They can be used in the pharmaceutical industry, food industry, health industry, beauty industry and other industries.
Plant extracts are based on plants as raw materials. According to the needs of the use of the final product extracted, through physical and chemical extraction and separation processes, one or more effective ingredients in the plant are obtained and concentrated without changing the effective ingredients. The product formed by the structure. According to the different components of the extracted plants, glycosides, acids, polyphenols, polysaccharides, terpenoids, flavonoids, alkaloids, etc. Are formed; according to different properties, they can be divided into vegetable oils, extracts, powders,crystalline powder, etc.
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