Application of levofloxacin hydrochloride in preparing pesticide preparation for preventing and controlling tobacco bacterial wilt

Abstract

The invention discloses the application of levofloxacin hydrochloride in preparing a pesticide preparation for preventing and controlling tobacco bacterial wilt. The levofloxacin hydrochloride can beused for preparing water-dispersible granules for preventing and controlling tobacco bacterial wilt. The water-dispersible granules are prepared from the following components in percentage by mass: 70-72% of levofloxacin hydrochloride, 2-6% of a disintegrant, 2.5-7.5% of a wetting agent, 2.5-7.5% of a dispersant, 3-5% of a binder, and 2-20% of a filler. In the invention, the water-dispersible granules containing levofloxacin hydrochloride are prepared by mixing the levofloxacin hydrochloride raw drug, the wetting agent, the dispersant, the disintegrant and the filler uniformly to obtain a premix; pulverizing the premix, adding the binder and water, and performing granulation and drying on mixture. The water-dispersible granules containing levofloxacin hydrochloride prepared by the invention have rapid bactericidal action on tobacco bacterial wilt pathogens and can be sprayed in the regular period or initial period of tobacco bacterial wilt to prevent the occurrence and spreading of diseases, and the disease prevention effect is good.

Description

Technical field [0001] The invention belongs to the field of prevention and control of economic crop diseases, and particularly relates to the application of levofloxacin hydrochloride in the preparation of pesticide preparations for preventing and treating tobacco bacterial wilt. Background technique [0002] Tobacco is one of the important economic crops in our country, and it plays a prominent role in developing local economy and increasing national financial accumulation. In my country's Henan, Shandong, Yunnan, Guizhou and other concentrated tobacco-producing areas, the area of ​​tobacco planting generally only accounts for 1 / 4 of the total cultivated land, while the economic income of tobacco accounts for more than 50% of the entire agricultural income, which is called "get rich" by farmers "Short, flat and fast" crops. [0003] Tobacco wilt is a major worldwide disease caused by Ralstonia solanacearum, which is serious in the southern tobacco areas of Guizhou, Sichuan, Henan...

AI Technical Summary

Problems solved by technology

Zhou Kaikai (2016) used 1000-1200 times liquid of 3% Zhongshengmycin WP to control tobacco bacterial wilt, and the control effect reached more than 63%, but the actual application effect in the field was unstable and poor

Antibacterial control agents are widely used because they are easily absorbed by plants and have antibacterial effects. Commonly used are streptomycin sulfate, etc., but tobacco bacterial wilt generally occurs seriously in acidic soil, and acidic soil can promote streptomycin to quickly Hydrolysis, resulting in ineffective control (Ye Jianru, 2013)

Copper ions in copper preparations have a contact killing effect on bacteria, and have been widely used in the prevention and treatment of bacterial leaf spot, and have a long lasting effect, but their weakness is that they are difficult to be absorbed by plants into the body, and the continuous control becomes worse

Images