Figure 9.

Control of P. xanthii by spraying zucchini plants with P. variotii. (A). Mean proportion of leaf area with powdery mildew symptoms per plant. (B). Percentage of the number of leaves with symptoms per plant. (C). Percentage of number of petioles with powdery mildew. Px: Application of P. xanthii. Px-PAE: Application of P. variotii three days before application of P. xanthii. Means with * denote significant difference between both treatments according a pairwise comparison using Student’s t-test (p < 0.05).