CN-119867083-B - Bacterial medicine composition for preventing and treating potato scab and application thereof

Abstract

The invention belongs to the technical field of potato scab control, and particularly relates to a bacterial medicine composition for controlling potato scab and application thereof. The bacterial medicine composition for preventing and treating potato scab comprises the following raw materials of a chemical preventing and treating agent for potato scab and a compound bacterial agent, wherein the volume ratio of the chemical preventing and treating agent for potato scab to the compound bacterial agent is 75-150:5000, and the compound bacterial agent comprises bacillus bailii BEV2 and bacillus atrophaeus FM2-4. The fungus composition can reduce the dosage of at least half of chemical agents, has the effects of quickly, effectively and effectively preventing and treating potato scab, and also has the advantage of environmental friendliness.

Inventors

• ZHAO DONGMEI
• YANG ZHIHUI
• ZHU JIEHUA
• Qi Ledan
• ZHANG DAI
• WANG JINHUI
• LI YIFAN
• Shang Shuyan

Assignees

• 河北农业大学

Dates

Publication Date

20260505

Application Date

20250113

Claims (6)

1. 1. The bacterial medicine composition for preventing and treating potato scab is characterized by comprising the following raw materials: chemical prevention and treatment agent and compound microbial inoculum for potato scab; The chemical control agent for potato scab is a fludioxonil preparation with the mass concentration of 2.5%; The volume ratio of the fludioxonil preparation with the mass concentration of 2.5% to the compound microbial inoculum is 150:5000; The compound microbial inoculum is bacillus belicus BEV2 and bacillus atrophaeus FM2-4, and the effective viable bacteria concentration of the bacillus belicus BEV2 and the bacillus atrophaeus FM2-4 in the compound microbial inoculum is 1-3 multiplied by 10 8 CFU/mL respectively; the preservation number of the bacillus atrophaeus FM2-4 is CGMCC No.32749; the preservation number of the bacillus beijerinus BEV2 is CGMCC No.26741.
2. 2. Use of the bacterial composition of claim 1 for controlling potato scab.
3. 3. A method for controlling potato scab, characterized in that the bacterial pharmaceutical composition according to claim 1 is used for controlling, comprising the steps of: The fungus medicine composition is applied for the first time in the sowing period of the potato, is applied for the second time in the potato growing period of the potato, and is applied for the third time in the potato tuber expanding period.
4. 4. The method of claim 3, wherein the potato scab chemical and the compound microbial agent are administered separately at the first, second, and third administrations.
5. 5. The method of claim 3, wherein the first application is a trench application, the second application is a spray application, and the third application is a spray application.
6. 6. The method of claim 3, wherein the first time the bacterial agent composition is applied, the chemical control agent for potato scab is applied in an amount of 150 mL/mu, and the compound bacterial agent is applied in an amount of 5000 mL/mu; When the bacterial medicine composition is applied for the second time, the application amount of the chemical control agent for potato scab is 150 mL/mu, and the application amount of the compound bacterial agent is 5000 mL/mu; When the bacterial pesticide composition is applied for the third time, the application amount of the chemical control agent for potato scab is 150 mL/mu, and the application amount of the compound bacterial pesticide is 5000 mL/mu.

Description

Bacterial medicine composition for preventing and treating potato scab and application thereof Technical Field The invention belongs to the technical field of potato scab control, and particularly relates to a bacterial medicine composition for controlling potato scab and application thereof. Background Potato scab is a soil-borne and seed-borne disease caused by a plurality of streptomyces spp, and the disease widely occurs in potato planting areas around the world, so that not only are the appearance quality and sales price of potatoes affected, but also the seedling emergence delay and even seedling death are caused when the disease is serious, the yield is reduced, and huge economic loss is brought to the potato industry. At present, in the potato planting process, the potato scab is mainly controlled by a chemical control method or a biological control method. The chemical prevention and control method mainly uses chemical agents to prevent and control scab, such as broad-spectrum bactericides such as copper sulfate, captan, copper crown, mancozeb and the like. Although these agents can control the extent of potato scab to some extent, there are also adverse effects such as contamination of soil and water sources. In addition, biological control of potato scab is usually performed by strains such as Trichoderma, bacillus subtilis, bacillus amyloliquefaciens, and the like. The strain has good control effect on potato scab, is safe to non-target organisms, has small toxic and side effects, has good environmental compatibility and long action time on harmful organisms. However, single biological control has the defects of slow field control effect, unsatisfactory control effect and easy environmental influence. Therefore, how to provide a method for preventing and treating potato scab, which has the advantages of high acting speed, good preventing and treating effect and environmental friendliness, is a problem to be solved in the field. Disclosure of Invention In order to solve the problems of easy environmental pollution, slow control speed and unsatisfactory effect existing in the prior art for controlling potato scab, the invention provides a fungus medicine composition for controlling potato scab and application thereof. The invention relates to a bacterial medicine composition for preventing and treating potato scab and application thereof, which specifically comprises the following technical scheme: A bacterial medicine composition for preventing and treating potato scab comprises the following raw materials: chemical prevention and treatment agent and compound microbial inoculum for potato scab; The volume ratio of the chemical control agent for potato scab to the compound microbial inoculum is 75-150:5000; The compound microbial inoculum comprises bacillus belicus BEV2 and bacillus atrophaeus FM2-4, wherein the effective viable bacteria concentration of the bacillus belicus BEV2 and the bacillus atrophaeus FM2-4 in the compound microbial inoculum is 1-3 multiplied by 10 8 CFU/mL respectively; the preservation number of the bacillus atrophaeus FM2-4 is CGMCC No.32749. Preferably, the chemical control agent for potato scab comprises fludioxonil, fluazinam or bronopol. Preferably, when the chemical control agent for potato scab is fludioxonil, the fludioxonil is a fludioxonil preparation with a mass concentration of 2.5%, and the volume ratio of the 2.5% fludioxonil preparation to the compound microbial inoculum is 150:5000. Preferably, when the chemical control agent for potato scab is fluazinam, the fluazinam is a 50% fluazinam preparation with a mass concentration, and the volume ratio of the 50% fluazinam preparation to the compound microbial inoculum is 75:5000. Preferably, when the chemical prevention and treatment agent for potato scab is bromonitrool, the bromonitrool is a bromonitrool preparation with the mass concentration of 20%, and the volume ratio of the 20% bromonitrool preparation to the compound microbial inoculum is 100:5000. The invention also provides application of the bacterial medicine composition in preventing and treating potato scab. The invention also provides a method for preventing and treating potato scab, which adopts the bacterial medicine composition for preventing and treating potato scab, and comprises the following steps: The fungus medicine composition is applied for the first time in the sowing period of the potato, is applied for the second time in the potato growing period of the potato, and is applied for the third time in the potato tuber expanding period. Preferably, the chemical control agent for potato scab and the compound microbial agent are applied separately at the first, second, and third applications. Preferably, the first application is a trench application, the second application is a spray application, and the third application is a spray application. Preferably, when the bacterial pesticide composition is applied for the first time, the applicat