Fig. 2From: Evaluation of the control effect of SAR inducers against citrus Huanglongbing applied by foliar spray, soil drench or trunk injectionHLB disease severity, expressed as standardized area under the disease progress stairs (sAUDPS), achieved by various SAR inducer treatments at the end of a three-year field trial (2015–2018). Bars represent standard deviations of the mean (n = 6). Different letters on the bars indicate significant difference among the treatments based on Tukey’s HSD test (α = 0.05)Back to article page