Fig 6. Ba01 reduced the severity of naturally occurring potato common scab in the field.

A. (a) An 11-week potato field trial was completed in Dounan, Taiwan. Bars = 100 cm. (b) Four treatments were treated with the Ba01 isolate at the concentrations indicated. (c) Each treatment had four blocks assigned by a randomized complete block design. B. Potato tubers were harvested from each Ba01 treatment: (1) Ba01 at 5x10⁶ CFU/mL; (b) 1x10⁷ CFU/mL; (c) 2x10⁷ CFU/mL; and (d) water. Bars = 5 cm. C. The percentage of disease severity was calculated from 100 randomly selected tubers of each treatment. D. Disease incidence was calculated by determining the proportion of tubers with >5% scab coverage from 100 randomly selected tubers in each treatment. E. Potato plant height (left panel) and tuber weight (right panel) were not affected by Ba01 application. We randomly chose 25 potato tubers from each block to evaluate the disease severity and incidence of each block, and four blocks of the same treatment were used to determine the mean ± standard error and compare to other treatments. P values were calculated using Tukey's test. Asterisks *, **, and *** represent P < 0.05, P < 0.01, and P < 0.001, respectively.