General Efficacy of Bacillus subtilis and Bacillus licheniformis Combination

19-02-2025

The combination of Bacillus licheniformis and Bacillus subtilis are effective more than individually on their own in various industries and applications. Below are some of the key effects that can happen when the two powerful bacteria are used together. 


B. subtilis:

Bacillus subtilis


B. licheniformis:

Bacillus licheniformis


Improving Aquaculture Efficiency and Water Purification: 

The combined action of Bacillus licheniformis and Bacillus subtilis can increase the resistance of fish, reduce the incidence of diseases, decompose and absorb harmful waste and nutrients, effectively purify water bodies, and improve water quality.


Promoting Crop Growth and Soil Improvement: 

Bacillus subtilis can inhibit the growth of pathogenic bacteria in soil, promote crop growth, increase yield, and improve agricultural product quality; Bacillus licheniformis can improve soil particle structure, promote organic matter decomposition, and enhance soil fertility.


Enhancing Antibacterial Ability: 

Bacillus subtilis effectively kills bacteria by producing active substances such as Bacillus subtilis and polymyxin; Bacillus licheniformis promotes the absorption of nutrients by crab bodies and enhances their ability to resist diseases by producing enzymes such as protease and amylase.


Adapting to Different Environmental Conditions: Bacillus subtilis is an aerobic bacterium that is suitable for growth under conditions of sufficient oxygen; And Bacillus licheniformis is a facultative anaerobic bacterium that can grow in both aerobic and anaerobic environments, allowing it to function well under different water quality conditions.


Precautions for mixing Bacillus subtilis and Bacillus licheniformis

Correct Ratio: The proportion of Bacillus subtilis and Bacillus licheniformis should be reasonably matched according to the actual situation of the aquaculture water body and the needs of the aquaculture organisms. Avoid excessive addition that may cause deterioration of water quality or damage to aquaculture organisms.

Proper Regulation: During the breeding process, water quality indicators should be regularly tested, and the dosage of Bacillus subtilis and Bacillus licheniformis should be adjusted in a timely manner based on the test results to ensure stable water quality and maximize breeding benefits.

Comprehensive Management: In addition to using Bacillus subtilis and Bacillus licheniformis, other water quality management measures should also be combined, such as regular water changes and the use of microbial agents, to maintain the overall health of aquaculture water bodies.


In conclusion, it can be seen that the combination of Bacillus subtilis and Bacillus licheniformis can be beneficial in so many applications. Some of them include improving aquaculture efficiency and purifying water, promoting crop growth and improving soil, enhancing antibacterial abilities, and adapting to different environmental conditions. Each individual bacteria is powerful on their own, but in this case, 1+1 is greater than 2. 

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