Fig. 6

The effect of different quantities of NPK fertilizer and PGPR bacteria on some physiological characters. A Variation of Chla content of inoculated cucumber fruit. B Variation of Chlb content of inoculated cucumber fruit. C Variation of carotenoid content of inoculated cucumber fruit. D Variation of anthocyanin content of inoculated cucumber fruit. E and F Variation of total and reduced ascorbate content of inoculated cucumber fruit respectively. Values represent means of three replicates; bars represent standard deviation of the three replicates. Different levels of NPK fertilizers are a1 (50% = 1 g/L) a2 (75% = 1.5 g/L) and a3 (100% = 2 g/L) based on recommended amount of different growth levels of cucumber (vegetative growth, flowering and fruiting). Different letters within columns indicate significant differences according to Duncan’s Multiple Range Test (P ≤ 0.05)