Group
Treatment
%NaCl
%FPH
I
1
0
0
2
0
7
3
0
10
4
0
14
II
5
0.2
0
6
0.2
7
7
0.2
10
8
0.2
14
III
9
0.6
0
10
0.6
7
11
0.6
10
12
0.6
14
IV
13
1.9
0
14
1.9
7
15
1.9
10
16
1.9
14
Table 4:
Factorial design of experiments for response surface methodology.