The chemical name of copper thiadiazole is 2-amino-5-mercapto-1,3,4-thiadiazole copper, and its trade name is "Lonke bacteria". Thiazole organic copper fungicides are low-toxicity and have promising market development prospects in my country. 1. At present, there is still a lack of variety resources at home and abroad that can effectively prevent and control bacterial diseases of crops.
In the prevention and control of bacterial diseases of rice, the only agent used in recent years is pyridazole. According to research results from Nanjing Agricultural University, rice bacterial blight bacteria are easily resistant to this drug, and a similar situation exists for bacterial stripe. Therefore, in recent years, it has been reported from various places that the efficacy of phylloxazole is very poor, and the disease cannot be effectively controlled after the onset.
On fruit trees, especially citrus, domestically produced and imported inorganic copper fungicides, such as copper hydroxide, cuprous oxide, copper sulfate and copper oxychloride, are commonly used in my country. There is a problem when the dosage is small. The efficacy of the drug is not ideal, and problems such as drug damage and rampant proliferation of mites may occur when used in large amounts.
As for vegetable bacterial diseases, there is no good chemical control. The commonly used agricultural streptomycin has poor effect and strong drug resistance, so the disease still cannot be effectively controlled.
The successful creation of copper thiazide has solved the problem of preventing and controlling bacterial diseases, thus finding a new method for the prevention and treatment of bacterial diseases. Thiobacterium copper was synthesized by Zhejiang Longwan Chemical Co., Ltd. in 1998 and was officially put into production in 2000. Copper thiacetin belongs to the heterocyclic organic copper fungicides. After extensive experiments and actual use on more than 14 million acres of rice, citrus, vegetables and fruit trees across the country, its control effect is unique and its efficacy is superior to commonly used pesticides and various inorganic copper preparations.
2. The mechanism of action of copper thiazide
The structure of copper thiazide is composed of two groups: one is the thiazole group, which is an efficient therapeutic agent in plants. When the agent is used in the porous vessels of the plant, the bacteria are severely damaged, and their cell walls become thinner and then disintegrate, leading to the death of the bacteria; secondly, copper ions have both bactericidal and fungicidal effects. In short, under the simultaneous action of the two groups, the sterilization is more thorough, the control effect is better, and the control targets are wider.
3. The development prospects of copper thiazide in my country are promising
1. The toxicity of copper thiazide SC is very low. The acute oral LD50 of 20% copper thiazide SC in rats is greater than 5050mg/ kg, the acute percutaneous LD50 in rats is greater than 2150 mg/kg; it is mildly irritating to the skin and eyes, and is a weak sensitizer to the skin.
2. It is not easy for diseases to develop resistance to copper thiazide. Due to the existence and continued development of resistance to fumarazole and agricultural streptomycin, farmers have increased the dosage of pesticides when using them, resulting in drug resistance. The further enhancement has created a vicious cycle, which not only increases farmers' medication costs, but also fails to achieve the desired control effect. Copper thiazide contains copper ions in its structure, and the copper preparation is a product with a history of more than 200 years, and the development of drug resistance is very slow.
3. The unique mechanism of action of copper thiazole. The bactericidal mechanism of copper thiazole includes both the unique preventive effect of the thiazole group on bacteria (the thiazole group is an efficient therapeutic agent in plants) and the Copper ions have excellent preventive and therapeutic effects on fungi and bacteria. At the same time, they have good systemic properties and have good dual effects of treatment and protection. According to the determination of the durability of the drug effect, 20% copper thiazide SC can last for 10 to 14 days at the usual dosage.
4. Thiobacterium copper is applicable to many crops and has a wide control spectrum. It can be widely used for the control of more than 20 kinds of crops and more than 60 kinds of bacterial and fungal diseases. The main control targets are:
(1) Bacterial diseases: rice bacterial stripe, rice bacterial blight, rice basal rot, citrus canker, pomelo canker, and cucumber bacterial angular spot diseases, cotton angular spot, garlic leaf blight, melon angular spot, cabbage soft rot, peanut bacterial wilt, tobacco wildfire, tobacco bacterial wilt, konjac soft rot, ginger blast, pepper bacterial wilt, Bacterial diseases of flower seedlings, bacterial perforation of peach trees, etc.
(2) Fungal diseases: citrus scab, grapefruit scab, banana leaf spot, watermelon wilt, longan leaf spot, peanut wilt, grape black pox, apple ring spot, Pear anthracnose, tomato fusarium wilt, sesame fusarium wilt, etc.
5. Copper thiazide will not cause phytotoxicity, and the residual amount is extremely low. Because the effective copper content of copper thiazide is 3.9%, it will not cause phytotoxicity.
At the same time, in actual use in the field, the residual amount of copper does not exceed the allowable residue standard.
4. Copper thiazide is a new product patented by the state, and the market needs to be expanded in depth
Copper thiacetin is a new product patented by the state, with independent intellectual property rights. It is exclusively produced in China and has been It has won the "National Key New Products", the Ministry of Agriculture's "Key Promotion of New Varieties", Zhejiang Province's "High-tech Products", "Technological Innovation Projects", China Petroleum and Chemical Industry Association's "Technological Invention First Prize" and 18 provincial-level plant protection projects nationwide. Inspection station "focus on promoting and recommending new pesticide varieties" and other award certificates.
1. The promotion of copper thiazide must combine "technical promotion" and "marketing" and must cooperate closely with the national plant protection system and agricultural technology system, relying on the human resources and technical resources of the plant protection and agricultural technology system , the advantages of network resources and information resources to promote the sales of copper thiazide.
2. Marketers must be technicians and after-sales service personnel at the same time. Marketers should combine technology and services to promote the sales of copper thiazide with technology and promote the sales of copper thiazide with service. Service is the beginning of marketing and the best sales.
3. The brand of "Longkeji" must be established to "unify a concept, establish a brand, cultivate a market, develop an industry, and strengthen the development of Longke", and do a good job in the " "Centennial Brand" promotes the development and growth of thiazole organic copper fungicides and has become a new bright spot and growth point in the field of pesticides.
4. The price of copper thiazide must be "affordable and cost-effective" for farmers, but there will never be a "price war". On the premise of ensuring excellent control effects, it must be affordable for farmers. It is affordable, affordable and cost-effective to use, and strives to make farmers "popular and popular".
(Communication: Zhejiang Longwan Chemical Co., Ltd. Wenzhou 325013)