At present, the lack of efficient, low-toxicity, and broad-spectrum symptomatic pesticides for major bacterial outbreaks in crops often leads to delayed production, resulting in reduced vegetable yields, rice crop failures, and compromised fruit quality in orchards. Despite ongoing research, there remains a significant gap in available varieties that can effectively manage bacterial diseases in both domestic and international agricultural settings.
In recent years, methamidophos has been the primary drug used in controlling bacterial diseases in rice. However, according to research from Nanjing Agricultural University, rice bacterial blight pathogens have developed strong resistance to this chemical, and similar issues have been observed with bacterial streak disease. As a result, the effectiveness of various forms of metformazole has declined, and disease control has become increasingly difficult.
For bacterial diseases in fruit trees, especially citrus, copper-based inorganic fungicides such as copper hydroxide, cuprous oxide, copper sulfate, and copper oxychloride are commonly used. However, these products often fail to deliver satisfactory results, causing phytotoxicity and promoting the recurrence of pests like aphids.
In the case of vegetable bacterial diseases, no effective chemical control methods have been widely adopted. The conventional use of streptomycin in agriculture has shown poor field performance and high resistance levels, leaving the disease largely uncontrolled.
The development of Thiobacillus copper (Loncobacter) has provided a breakthrough in the prevention and treatment of bacterial diseases, offering a new and effective solution. Longke Microorganism Suspension (Thiococcus Copper), produced by Zhejiang Longwan Chemical Co., Ltd., is now recognized as a national key new product and is recommended by the Ministry of Agriculture for pollution-free agricultural production. This innovative bactericide is known for its high efficiency, low toxicity, minimal residue, and environmental safety.
Under the brand name "Lonker," Thiobacillus copper has an independent intellectual property right. Its generic name is "Thiodiazole-copper," with the molecular formula C4H4N6S4Cu and a molecular weight of 329. It is also known as "2-amino-5-mercapto-1,3,4-thiadiazole-copper." Zhejiang Longwan Chemical Co., Ltd. is a leading producer of novel bactericidal agents, having been included in numerous national projects, including the "Eleventh Five-Year Plan" technology support program, national technological innovation initiatives, and the Ministry of Agriculture's key promotion list.
This new bactericide, Thiobacillus thuringiensis (Loncobacter), has brought hope for managing bacterial diseases in crops such as rice, citrus, fruits, and vegetables. With its unique structure, high activity, broad spectrum, and low toxicity, it addresses the current shortage of effective treatments for bacterial diseases in agriculture.
Here is a detailed guide on the application of Thiobacillus (Loncobacter):
A. Whole-course Drug Plan:
1. Soak seeds at the seedling stage using a ratio of 1:50 (seed to agent), then sow after soaking.
2. During the seedling stage, apply a 600-fold dilution to soak roots or spray directly.
3. When transplanting, use the suspension to promote root development.
4. At the early stages of bacterial disease, spray a 500-fold dilution (100 ml per 50–60 kg of water) per acre.
5. For leaf and fruit infections, apply a fine spray at 500 times, with more than 50 kg of spray per mu.
6. For root or base stem infections, use a 500-fold dilution for root irrigation.
7. For soil-borne bacterial diseases, irrigate 2–3 times with a 600-fold solution, every 7 days, achieving up to 85% control.
B. Application Details:
1. Timing is crucial—prevention is better than cure. Apply before typhoon season or at the early signs of disease.
If the disease is already severe, apply once every 7–10 days, for 2–3 times, to reduce losses significantly.
2. Shake well before use. If precipitation occurs, shake again before applying; it does not affect efficacy.
3. Can be mixed with insecticides, acaricides, and fungicides, but avoid mixing with strongly alkaline pesticides.
4. Prepare a mother solution with a small amount of water, then dilute further before spraying.
5. Safe for flowering, seedlings, and young fruits, with low risk of phytotoxicity.
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