Table 11 Average manure composition on monthly basis

CH₄ concentration (ppm)

2.2 d^* ± 0.0

2.8 c ± 0.2

2.9 bc ± 0.2

3.3 ab ± 0.2

3.5 a ± 0.7

CO₂ concentration (ppm)

380.2 b ± 5.9

486.2 a ± 19.4

459.3 a ± 21.5

404.0 b ± 19.0

368.6 b ± 14.3

N₂O concentration (ppm)

1.1 a ± 0.2

1.0 a ± 0.2

1.1 a ± 0.2

0.6 b ± 0.0

0.4 b ± 0.0

CH₄ FR (g m^-2d^-1)

1.1 d ± 0.0

1.4 c ± 0.1

1.4 bc ± 0.1

1.6 ab ± 0.1

1.7 a ± 0.3

CO₂ FR (g m^-2d^-1)

507.6 b ± 7.9

649.2 a ± 26.0

613.3 a ± 21.5

539.4 b ± 19.0

492.1 b ± 14.3

N₂O FR (g m^-2d^-1)

1.4 a ± 0.3

1.4 a ± 0.2

1.5 a ± 0.3

0.8 b ± 0.0

0.5 b ± 0.0

CH₄ EF (g d^-1 hd^-1)

40.5 b ± 1.2

52.7 ab ± 3.8

54.2 b ± 3.8

62.4 a ± 2.3

63.7 a ± 11.6

CO₂ EF(g d^-1 hd^-1)

19487 b ± 624

24958 a ± 326

23584 a ± 326

20693 b ± 143

18541 b ± 431

N₂O EF (g d^-1 hd^-1)

55.2 a ± 11.0

53.3a ± 9.3

58.2 a ± 9.6

29.6b ± 1.4

17.7 b ± 0.9

CH₄ EF (g d^-1 AU^-1)

53.2 ab ± 7.9

57.6 a ± 6.7

51.2 b ± 10.2

52.8 ab ± 6.2

52.0 ab ± 14.9

CO₂ EF(kg d^-1 AU^-1)

25.5 a ± 2.6

26.9 a ± 2.0

22.2 b ± 2.9

17.5 c ± 1.8

15.1 c ± 0.8

N₂O EF(g d^-1 AU^-1)

67.0 a ± 29.0

57.7 a ± 18.5

55.8 a ± 27.7

24.9 b ± 8.1

14.5 c ± 2.0