pH
GE/%
GR/%
4
67.43g
80.7g
4.5
75.07e
83.46f
5
77.5d
90.23d
5.5
80.07b
93.36b
6
82.43a
95.73a
6.5
79.73c
91.9c
7
72.4f
85.13e