Table 3 Changes in the values of the total genus richness of soil nematode (genus number), and nematode abundance (individuals per 100 g dry soil) under no plant and three plant species with or without added earthworms, and two-way ANOVA for effect of earthworms, three different agricultural plant species and interaction of earthworms × plant species on the total genus richness, and the abundance of soil nematodes.

From: Effects of Earthworms and Agricultural Plant Species on the Soil Nematode Community in a Microcosm Experiment

SN

No plant

Wheat

Cotton

Cabbage

Results of two-way ANOVA

−E. fetida

+E. fetida

−E. fetida

+E. fetida

−E. fetida

+E. fetida

−E. fetida

+E. fetida

E

PS

E × PS

F

P

F

P

F

P

TR

22.71 ± 1.11

27.86 ± 0.51

25.57 ± 1.09

28.00 ± 0.90

17.86 ± 0.70

21.43 ± 0.72

19.71 ± 0.92

24.00 ± 0.69

40.97

0.000

28.93

0.000

0.91

0.444

TN

622.00 ± 42.87

454.29 ± 26.78

961.29 ± 70.00

523.14 ± 26.51

566.43 ± 24.29

359.29 ± 24.17

925.71 ± 73.05

441.29 ± 34.30

130.03

0.000

18.24

0.000

3.97

0.013

Ba

305.62 ± 25.12

233.92 ± 20.56

565.58 ± 42.81

158.74 ± 12.33

186.07 ± 12.09

121.93 ± 9.33

468.73 ± 40.32

208.83 ± 25.56

121.42

0.000

27.35

0.000

12.31

0.000

Fu

48.52 ± 4.75

35.71 ± 5.40

112.67 ± 11.10

127.9 ± 16.04

108.6 ± 19.33

65.17 ± 9.35

158.08 ± 18.81

48.39 ± 4.77

14.20

0.000

17.88

0.000

9.07

0.000

Pp

220.63 ± 22.24

144.3 ± 20.85

202.96 ± 39.01

159.22 ± 15.43

171.69 ± 19.57

135.04 ± 17.28

258.2 ± 26.47

160.77 ± 11.35

15.38

0.000

2.00

0.126

0.77

0.516

Om

47.23 ± 5.30

40.36 ± 3.86

80.08 ± 14.78

77.28 ± 10.38

100.07 ± 11.74

37.15 ± 4.06

40.77 ± 6.19

23.32 ± 2.65

15.88

0.000

15.79

0.000

4.89

0.005

  1. Data are means ± SE, n = 7. SN, soil nematode; TR, total genus richness; TN, total soil nematode; Ba, bacterivores; Fu, fungivores; Pp, plant parasite; Om, omnivores-predators; E, earthworms; PS, plant species; E × PS, earthworms × plant species interaction.
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