Bacillus subtilis
Bacillus subtilis
Bacillus subtilis — Multifunctional Rhizosphere Biocontrol
Bacillus subtilis is among the most widely used Bacillus strains. It colonizes soil and the rhizosphere rapidly, produces extracellular enzymes and antimicrobial metabolites, suppresses soil-borne pathogens, and promotes root development — a classic dual biopesticide and biofertilizer.
Mechanisms of Action
Disease Suppression
Secretes lipopeptides, iturin, and related compounds to inhibit Fusarium, Rhizoctonia, and other soil-borne pathogens.
Enzyme Production
Produces proteases, cellulases, and amylases that support rhizosphere organic matter breakdown and nutrient release.
Growth Promotion
Stimulates root hairs and lateral roots via growth regulators; synergizes with AMF and Trichoderma.
Stable Spores
Forms stress-tolerant spores for storage and shipping; germinates in the rhizosphere for sustained protection.
Product Specifications
Application Methods
Seed coating: Mix 1:50-100 with seed before sowing
Base dressing: 500g-1kg per mu with fine soil or compost, incorporated by plowing or banding
Root drench: Dilute 300-500x at transplant or early disease pressure
Potting mix: Incorporate at 1:100-200 into seedling media; mix and use promptly
Applicable Crops
Vegetables, fruit trees, flowers, field and protected crops — for soil-borne disease prevention, root establishment, and continuous cropping soils