Treatment | Hoagland nutrient solution | Millipore water | ||||
---|---|---|---|---|---|---|
 | pH1 | pH2 | ΔpH | pH1 | pH2 | ΔpH |
+0 μM PHE | 5.50 | 5.71 ± 0.02 c | 0.21 ± 0.02 c | 5.50 | 5.47 ± 0.04c | -0.03 ± 0.04c |
+2.81 μM PHE | 5.50 | 5.90 ± 0.03 b | 0.40 ± 0.03 b | 5.50 | 6.08 ± 0.03b | 0.58 ± 0.03b |
+5.62 μM PHE | 5.50 | 6.15 ± 0.04 a | 0.65 ± 0.04 a | 5.50 | 6.24 ± 0.05a | 0.74 ± 0.05a |