Bacterial diseases are caused by infections from bacteria, such as soft rot, ulcer disease, and bacterial wilt. These pathogens are typically rod-shaped and often possess one or more flagella, enabling them to enter plants through natural openings like stomata, lenticels, or water pores, as well as wounds. Transmission occurs via water, rain, insects, seeds, and soil. These diseases thrive in warm and humid conditions, making them particularly problematic during certain seasons.
The symptoms of bacterial diseases include wilting, rotting, and leaf perforation. A key characteristic is the presence of bacterial exudate, especially during wet weather, which oozes from infected areas. In China, bacterial diseases have a significant impact on agricultural production. For example, rice bacterial blight is one of the three major rice diseases, affecting over 10 million mu annually, causing yield losses of 10–20% and up to 50% in severe cases. Citrus canker and ginger bacterial diseases also cause serious damage to crops, impacting both yield and quality, and hindering economic growth in affected regions.
Currently, there are limited pesticide options available for controlling bacterial diseases compared to fungal diseases. Existing products include agricultural streptomycin, metilazole, and copper-based compounds such as copper hydroxide, copper sulfate, copper oxychloride, and cuprous oxide. However, their effectiveness is often limited, prompting the need for more advanced solutions.
Zhejiang Longwan Chemical Co., Ltd. has developed a new pesticide called 20% Thiazole Copper (Longkei) suspension agent. This product is independently developed with intellectual property rights and has received multiple national and provincial certifications, including being listed as a key new product by the Ministry of Agriculture and winning the "Technical Invention First Prize" in the petrochemical industry. It has also been supported by national science and technology projects and is recognized as a pollution-free pesticide by various plant protection stations.
Thiacax (thiazole copper) combines a thiazole group with copper ions, offering strong systemic absorption and dual protective and curative effects. Its advanced formulation makes it cost-effective and user-friendly for farmers. The product is safe for humans, livestock, and beneficial organisms, and is environmentally compatible.
To effectively manage bacterial diseases, the concept of "full-process medication" should be adopted, starting from the seed stage to the field stage. Applying the pesticide at the early stages ensures comprehensive control of bacterial, soil-borne, and root diseases. Delaying treatment may result in only temporary symptom relief, not long-term control.
Thiacax can be applied through multiple methods, including seed soaking, seedling drenching, soil disinfection, root dipping, field irrigation, and conventional spraying. It is safe to use at all growth stages without causing phytotoxicity, and it can be mixed with other pesticides without issues. It does not promote pest resistance or proliferation.
The production process of Thiacax involves a three-step reaction method, refined over eight years of research. Advanced formulations such as suspension agents have been developed, and the product is now widely used and sold. Field trials have shown that 20% Thiacax suspension is highly effective, low in toxicity, and safe for use against bacterial diseases. It also shows some efficacy against certain fungal diseases, such as citrus scab, watermelon wilt, and banana leaf spot.
Application guidelines suggest using a 500–700 times dilution for most crops. For rice bacterial blight, 100g per mu is recommended. Soaking seeds and spraying during the early stages of disease can help prevent outbreaks. For bacterial leaf spot, a 500–700 times spray is advised. For Chinese cabbage soft rot, a 600 times irrigation solution achieves an 80% control rate.
For citrus canker, the focus is on protecting young shoots and fruits. Spraying at 600 times concentration on spring, summer, and autumn shoots is effective. For soil-borne diseases like ginger aphid, combining seed soaking and irrigation improves results. Root diseases are managed through irrigation and foliar application.
Best practices involve applying the product throughout the entire growing cycle, from seed to harvest, following a full-process treatment plan. Relying solely on late-stage applications may not provide sufficient control.
Thiacax is an ideal solution for managing bacterial diseases. As a specialized agent, it offers a complete approach to disease prevention and control. Zhejiang Longwan Chemical Co., Ltd. is located at No. 6 Huangshan Road, Airport Avenue, Wenzhou City, Zhejiang Province (325013). Contact details: Telephone, Fax, Email.
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