Prevention and cure of four common diseases in pepper
First, the main diseases and their occurrence characteristics
1. Chili virus disease: It is caused by infection with cucumber mosaic virus and tobacco mosaic virus. Infected peppers at the seedling stage caused the most serious losses. It is mainly transmitted by locusts, sap, etc., eventually causing malformation, resulting in mosaics, necrosis, falling leaves, falling flowers, and falling fruit. Once infected, the incidence is extremely high and spread rapidly.
2. Chili blight: A fungal disease caused by Phytophthora infestans. Seedling stage, adult stage can be victimized, roots, stems, leaves, fruits can be the disease, the previous root, stem disease caused by dead seedlings, infection in the middle and late often cause the death of the whole plant. During the transplanting period, the disease spreads quickly and is easy to infect. It will cause large dead seedlings. Even the field will be heavier. The pathogenic spores will spread quickly and prosperously through wind and rain.
3. Pepper Bacterial Spot: It is a common bacterial disease on pepper that is prone to prolonged growth. Often cause a lot of early deciduous, falling, falling fruit. If the lesions on the leaves do not form sores under long-term high-temperature and high-humidity conditions, they quickly expand into leaf margin scorch or many small spots on the leaves, and then cause a large number of leaves to fall off.
4. Chili pepper anthracnose is one of the important diseases of pepper during fruiting period. The disease mainly harms the fruit, especially mature fruits. When it is serious, it will cause a lot of rot in the fruit and it will have the greatest impact on production. Conidia are mainly spread by wind and rain and insects.
Second, prevention and control technology
1. Prevention of chili virus disease and disease at the seedling stage. Seedlings should pay attention to the prevention and control of aphids. Based on the prevention and control of insect transmission, the pepper seedlings were sprayed with 20% virus A wettable powder 800 times from the 5-leaf stage and sprayed at intervals of 10 to 15 days to effectively prevent the virus disease. Spraying Ami-Silda suspension agent 1500 times for 2 to 5 days prior to transplanting to prevent and control epidemic diseases, and then transplanting with drugs, it can prevent diseases, blight, etc. The disease was introduced into the field and caused extensive damage.
2. Daejeon disease prevention. According to the occurrence characteristics of die-casting pepper seedlings in Datian period, it should be sprayed once every 3 to 5 days after transplanting to control epidemic disease with 1500 times liquid of Amisida Suspending Agent or 64% of anti-disease wettable powder 500 times, which can effectively prevent dead seedlings. , severe illness for consecutive years, for 10 to 15 days and then spray 1 time. Wang long-term spray a 20% virus A soluble powder, can effectively prevent viral disease. When bacterial blight is first seen in the early fruit stage, 72% of the Streptomycin WP 500 solution should be sprayed in time. Severe diseased fields or greenhouses are sprayed at intervals of 10 days and applied continuously for 2 to 3 times.
Dye intermediates, also referred to as intermediates, refer to various aromatic derivatives used in the production of dyes and organic pigments. They are derived from benzene, toluene, naphthalene, anthracene and other aromatic hydrocarbons from coal chemical and petrochemical industries through a series of organic synthesis unit processes. With the development of chemical industry, the application range of dye intermediates has been extended to pharmaceutical industry, pesticide industry, propellant and explosive industry, information recording materials industry, as well as auxiliaries, surfactants, spices, plastics, synthetic fibers and other production sectors. There are many kinds of dye intermediates, and hundreds of them are more important. The most important early dye intermediates, such as nitrobenzene, aniline, phenol, chlorobenzene and phthalic anhydride, have been developed into important basic Organic Intermediates because of their wide use and large dosage. The annual output in the world is more than one million tons. The most important dye intermediates are o-nitrochlorobenzene, p-nitrochlorobenzene, o-nitrotoluene, p-nitrotoluene, 2-naphthol, anthraquinone, 1-aminoanthraquinone and so on. Starting from the above intermediates and through a series of organic synthesis unit processes, various intermediates with complex structures can be prepared.
Dye intermediates mainly include benzene intermediates, toluene intermediates, naphthalene intermediates and anthraquinone intermediates, in addition, there are some heterocyclic intermediates. The main reaction processes of intermediate in production are nitration, sulfonation, halogenation, reduction, amination, hydrolysis, oxidation, condensation and so on. The synthesis of a complex intermediate often takes many unit processes, sometimes using different basic materials and different synthetic routes.
Our Services
1. OEM(????) service is available.
2. Fast producing time.
3.Cheapest price forproduces.
4. Reply promptly in 24 hours.
5.Free sample available.
FAQ
Q1: product specifications?
A: we will pack the product specifications according to your needs.
Q2: Do you have some videos where we can see the line production?
A: Yes, we can provide some videos for reference. (yes, we can provide some videos).
Q3: How about payment terms? What kind of payment terms do you have?
A: 30% TT deposit + 70% TT before shipment, 50% TT deposit + 50% LC bala
Nce, Flexible payment can be negotiated.
Q4: what advantages do you have?
A: the quality of the products we offer can be guaranteed and will provide you with very competitive prices.
If you have any questions, please contact with us directly. Organic Intermediate are produced by HRT bearing With High Quality and Good Appearance. Welcome you can visit our Factory. For inqury, please send mail directly to us.
Dyestuff IntermediateSyntheses
Synthesis Of Pharmaceuticals,Dyestuff Intermediate Synthesis,Aluminum Phthalocyanine Chloride,4-Chlorophenylhydrazine Hydrochloride
Shandong Chenyi Environmental Protection Technology Co.,Ltd , https://www.chenyichemistry.com