Treatment Treatment Treatment Location Location Location
Unpolluted Soil
Oil-polluted soil
p
Bahra (N)
Burgan (S)
p
Max. growth rate (cm day-1)
0.30 ± 0.14
0.25 ± 0.07
>0.05NS
0.18 ± 0.06
0.37 ± 0.15
>0.05NS
Shoot dry weight (g) 6.65 ± 0.19 5.79 ± 0.18 <0.001*** 6.39 ± 6.05 6.05 ± 0.81 >0.05NS
Root dry weight (g) 2.17 ± 0.31 1.26 ± 0.08 <0.001*** 1.75 ± 0.16 1.68 ± 0.35 >0.05NS
Total dry weight (g)
8.82 ± 0.35
7.05 ± 0.24
<0.001***
8.14 ± 0.16
7.73 ± 0.49
>0.05NS
Soil TPH content (oil-polluted sites) (mV.sec) - - - 200.35 ± 35.20 210.27 ± 9.31 >0.05NS