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Table 1 Results of ANOVA (Analysis of variance) on the effects of experimental site (St), cotton growth stage (S), treatment (T) and their interactions on WSOC/SOC, MBC/SOC, WIN/TN, MBN/TN and MBC/MBN ratios, cellulose-decomposing bacteria amounts (CDBA), cellulase (CE), β-glucosidase (β-GE) and arylamidase (AE) activities

From: Comparative effects of crop residue incorporation and inorganic potassium fertilization on soil C and N characteristics and microbial activities in cotton field

 

WSOC/SOC

MBC/SOC

WIN/TN

MBN/TN

MBC/MBN

CBDA

CE

β-GE

AE

df

St

15.98**

119.48**

4.05*

61.65**

0.61

388.88**

875.62**

95.28**

865.47**

1

S

791.17**

709.10**

1541.43**

736.55**

67.92**

378.73**

378.73**

358.17**

893.83**

3

T

70.49**

31.79**

73.18**

22.75**

44.39**

75.21**

18.83**

71.43**

26.02**

5

St × S

29.35**

41.08**

38.42**

25.22**

2.78*

0.22

2.85*

9.19**

18.99**

3

St × T

0.49

1.75

1.36

1.22

1.68

1.14

0.13

0.40

0.82

5

S × T

5.63**

1.95*

5.75**

4.07**

4.85**

1.96*

1.53

3.64**

3.27**

15

St × S × T

0.61

0.49

0.70

0.68

0.74

1.32

0.27

1.08

1.57

15

  1. WSOC, water-soluble organic carbon content; SOC, soil organic carbon; MBC, microbial biomass carbon; WIN, water inorganic nitrogen; TN, total nitrogen; MBN, microbial biomass nitrogen; MBC, microbial biomass carbon
  2. F values and significance levels (**P < 0.01, *P < 0.05)