â— Xiong Xingping (Zhejiang Longwan Chemical Co., Ltd., Wenzhou 325013)
Among the various plant diseases, bacterial infections are a significant concern, accounting for approximately 20% of crop infestations. These diseases are caused by bacteria and can lead to serious damage if not properly managed. In this article, I will provide an overview of bacterial plant diseases and introduce effective preventive and control agents that can be used in agriculture.
The symptoms of bacterial diseases typically include necrosis, rot, wilting, and deformity. These manifestations result from the destruction of plant cells and cell walls. Lesions on leaves often appear as polygonal spots with yellow halos, while lesions on swollen tissues or fruits tend to be round. In tender, juicy parts of the plant, tissue death is common, leading to decay. Tumors may also form at the site of infection, particularly on roots or stems. Wilting occurs when bacteria invade the vascular system, disrupting the transport of water and nutrients, which eventually leads to plant death.
Unlike fungal diseases, bacterial infections do not produce hyphae or spores. The lesions usually have a smooth surface without mold growth, but they may exhibit bacterial oozing, except in cases like root nodules or crown gall. This characteristic is a key diagnostic feature of bacterial diseases.
According to the pesticide electronic manual and registration bulletins, there are currently 29 commonly used and effective agents for controlling bacterial plant diseases. Here is a detailed list of these products:
1. Thiobacillus Copper: Marketed under the name "Longkei," its chemical name is thiodiazole-copper. It is an organic copper bactericide developed independently by Zhejiang Longwan Chemical. It has special efficacy against bacterial leaf streak, base rot, soft rot, and other bacterial diseases. It offers both internal absorption and protective effects.
2. Thiodizole: Known as "Yezizi" or "Ye Qingshuang," it is produced by Zhejiang Longwan Chemical and is effective against bacterial diseases such as rice bacterial streak and leaf blight.
3. Bordeaux Mixture: A traditional fungicide made from copper sulfate, lime, and water in specific proportions.
4. Daisen Ammonium: Also known as amobam.
5. Sodium Dichloroisocyanurate
6. Trichloroisocyanuric Acid: Commonly referred to as “Strong Chlorine.â€
7. Chlorobromoisocyanuric Acid: Also known as “Dendrazole†or “Sterilization into.â€
8. Copper Hydroxide: With the chemical formula Cu(OH)â‚‚, it is also called Fengan Security, Can Kill 101, and Guanyin Copper.
9. Copper Rosin Acid: Known as Green Milk Copper or Green Mycelium.
10. Cuprous Oxide: Also known as Copper Master or God Copper.
11. Biclicin: Also known as Ethylicin.
12. Trichloroisocyanuric Acid
13. Ningnanmycin
14. Ammonia Copper: Also called CuAmino Sulfate or Copper Tetrasulfate Ammonia.
15. Amino Oligosaccharides: Also known as Chito-oligosaccharides or Stirling.
16. Mixed Amino Acid Copper: Also called Double Effect Ling.
17. Zhongshengmycin: Marketed as “Ke Xi Kang.â€
18. Copper Acetate: Also known as Copper Acetate.
19. Agricultural Streptomycin
20. Copper Oxychloride: Also known as Wang Copper or Basic Copper Chloride.
21. Nitro Humic Acid Copper: Also called “Bacteria Will Be Grams.â€
22. Oxytetracycline Hydrochloride: Also known as Hydrathomycin or Neomycin.
23. Thousand Copper: Sold under the brand name “Dongfeng Xiajian,†exclusively produced by Zhejiang Dongfeng Chemical.
24. Thiazole Zinc: Produced by Zhejiang Xinnong Chemical Co., Ltd.
25. Thiabendazole: Marketed as “Qingshuling,†produced exclusively by Wenzhou Lucheng Zhibao Chemical Company.
26. Amber Acid Copper: Also known as Dibasic Copper or DT.
27. Bacillus Polymyxa: Sold under the name “Contiyet,†produced by Shanghai Zeyuan Marine Biotechnology Co., Ltd.
28. Gold Nuclear Medicine
29. Grams of Bacteria
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