Evaluation of bacteriophages in the biocontrol of Pseudomonas syringae pv. syringae isolated from cankers on sweet cherry (Prunus avium L.) in Turkey

Egyptian Journal of Biological Pest Control

Table 6 Biocontrol (%) at bacteriophage treatments on Pseudomonas syringae pv. syringae disease’s severity in micropropagated cherry plantlets within a growth chamber

Treatments	Treatment concentration (pfu/ml)	Average disease index (%)^a	Efficacy (%)^b
Φ1226	2,2 × 10⁹	9.7 ± 0.75 a^c	79.8
Φ137	1,5 × 10⁹	13.9 ± 0.77 ab	71.2
Φ358	4,1 × 10¹⁰	15.3 ± 0.63 ab	68.3
Φ369	6 × 10¹⁰	20.8 ± 1.10 ab	56.7
ΦCombination of phages	5 × 10⁹	27.8 ± 0.54 b	42.3
Φ1215	4 × 10⁹	38.9 ± 0.49 c	19.2
BY5L316 (control +)	0	48.1 ± 0.51 c	0.0

a. The results are an average of the two trials. Four plantlets were evaluated in each trial for each treatment
b. Percentage reduction in diseases severity compared to plants treated with pathogen alone
c. Means within columns sharing a letter in common are not significantly different (P < 0.05; Duncan’s test). The standard error of each set is displayed