Combined effect of yeast and silicon on the control of bacterial fruit blotch in melon

•Silicon and yeasts separated or combined reduced the severity of bacterial fruit blotch in melon.•No additive or synergistic effects of the yeasts/Si combined treatments were observed.•The durability of protection in melon plants with LMA1 and/or Si was 29 days.•Increases in the enzymatic activity by LMA1 and/or Si may be related to resistance induction.