What benefit does Bacillus subtilis provide to plants?

Bacillus subtilis is a beneficial bacterium known for its positive effects on plant health, particularly regarding root development. This microorganism promotes increased root health by enhancing root growth and development. It does so through various mechanisms, including the production of plant hormones such as auxins that stimulate root elongation, as well as providing a protective barrier against root pathogens. By improving the root system, Bacillus subtilis can lead to stronger plants that are better able to absorb nutrients and water, ultimately contributing to overall plant vigor.

While Bacillus subtilis can indirectly impact aspects like flowering or fruit yield by supporting the plant’s overall health and resilience, its primary benefit is the enhancement of root health. This foundation is crucial for nutrient uptake and moisture retention, vital for robust plant growth. Additionally, while it may help in managing pest populations through competitive exclusion or biocontrol, that is not its primary benefit compared to its direct role in promoting root health.