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AMB Express

Table 2 Degradation ratios (%) of soil-buried PBSA films

From: Contribution of soil esterase to biodegradation of aliphatic polyester agricultural mulch film in cultivated soils

Soil sample

Degradation ratio (%)*

Incubation period (week)

1

2

3

4

CHI

−2.4 ± 2.5

−0.9 ± 0.9

7.4 ± 7.3

33.1 ± 9.0

TKB

1.0 ± 3.5

−0.7 ± 1.3

0.8 ± 1.5

1.4 ± 3.4

HIO

−1.7 ± 1.1

1.2 ± 1.4

−0.2 ± 0.2

7.3 ± 8.1

MJO

0.6 ± 1.7

0.6 ± 3.0

4.0 ± 2.0

7.9 ± 1.8

TAK

1.8 ± 2.5

3.3 ± 1.7

5.4 ± 3.2

30.1 ± 6.6

KIB

−4.0 ± 2.1

7.8 ± 5.7

34.5 ± 8.3

58.9 ± 36.3

OKA

0.4 ± 2.6

3.9 ± 5.8

60.3 ± 23.2

95.9 ± 6.6

AKA

−4.7 ± 2.5

0.5 ± 2.3

54.3 ± 22.9

66.0 ± 17.3

MIY

1.2 ± 0.2

5.2 ± 3.2

28.5 ± 27.7

69.7 ± 33.2

YM1

2.7 ± 0.9

16.9 ± 3.4

62.0 ± 14.1

48.5 ± 11.6

YM2

0.9 ± 1.0

21.4 ± 5.0

44.1 ± 9.2

61.3 ± 8.4

  1. *The ratios represent the means ± standard error of triplicate assays.
  2. Degradation ratios were calculated by image scanning method as indicated in the equation given in the Materials and methods section.
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