| |
Plant height (cm) Samples 1-9 |
crude oil
concentration |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
| 0% |
32.34a |
31.60a |
|
|
|
|
|
|
|
| 2% |
|
|
20.81a |
7.98b |
10.46b |
5.42b |
7.36b |
9.54b |
5.23b |
| 3% |
|
|
13.78a |
7.44b |
5.23bc |
11.68a |
6.98b |
5.73bc |
3.72c |
| 4% |
|
|
11.34a |
7.03bc |
8.52ab |
6.98bc |
8.11abc |
9.24ab |
5.04c |
a, b, c................ within each row, means with the same letter are not significantly different p=0.05 |
