Electronic Journal of Biotechnology ISSN: 0717-3458
  © 2008 by Universidad Católica de Valparaíso -- Chile
Vol. 11 No. 1, Issue of January 15, 2008
 


Table 3. Essential soil characteristics for Option 2: different levels of tillage. (Results represent mean ± standard deviation of three replicates).


WAR
Cell

0

2

6

0

2

6

0

2

6

0

2

6

0

2

6

% Moisture by mass

Total hydrocarbon
content (mg/kg)

% Organic Carbon

% Total Nitrogen

THB count (x 105 cfu/ml)

A

13 ± 1

18 ± 1

10 ± 1

16 742.2 ± 80

3446.1 ± 92

1917.4 ± 69

0.89 ± 0.03

0.43 ± 0.02

0.42 ± 0.04

0.43 ± 0.01

0.14 ± 0.04

0.07 ± 0.002

7.1 ± 0.10

12.8 ± 0.06

16.9 ± 0.02

B

14 ± 2

16 ± 2

17 ± 2

13 695.1 ± 100

4100.4 ± 69

1038.7 ± 52

0.87 ± 0.04

0.62 ± 0.05

0.62 ± 0.05

0.56 ± 0.02

0.30 ± 0.07

0.09 ± 0.004

9.2 ± 0.15

13.7 ± 0.04

25.2 ± 0.01

C

12 ± 1

14 ± 2

14 ± 2

13 510.7 ± 110

952.8 ± 17

744.6 ± 14

0.89 ± 0.05

0.57 ± 0.03

0.48 ± 0.04

0.58 ± 0.01

0.29 ± 0.06

0.14 ± 0.03

9.2 ± 0.05

23.3 ± 0.08

28.4 ± 0.10

D

15 ± 2

22 ± 1

22 ± 1

18 601.0 ± 30

464.2 ± 29

156.2 ± 17

0.90 ± 0.04

0.61 ± 0.04

0.51 ± 0.02

0.67 ± 0.02

0.27 ± 0.07

0.15 ± 0.03

12.7 ± 0.25

27.5 ± 0.06

32.8 ± 0.12

E

15 ± 2

16 ± 2

16 ± 2

18 650.3 ± 40

339.0 ± 12

764.1 ± 6

0.92 ± 0.05

0.81 ± 0.06

0.36 ± 0.06

0.69 ± 0.01

0.46 ± 0.03

0.15 ± 0.02

12.9 ± 0.20

25.6 ± 0.10

34.8 ± 0.20

Cell: (A) tilled one day per week; (B) tilled three days in a week; (C) tilled five days a week; (D) tilled once daily; (E) tilled twice daily.
WAR: Week(s) after remediation.
THB: Total heterotrophic bacteria.
cfu/ml: Colony forming unit per millilitre.


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