B. subtilis microcapsule survival rate was 87.53% after 540 d of storage, which was a longer shelf life than that of wettable powders. Moreover, its biocontrol efficacy reached 79.91% when a dosage of 300 g hm−2 was used, the microcapsule showed higher control efficacy than Thiram wettable powder against R. solani in tomato under field conditions