Table 4 ANOVA for gas measurements in K15NO3-fertilized soils only.

From: Edaphic factors and plants influence denitrification in soils from a long-term arable experiment

 

d.f.

N2-N

Total N2-N + N2O-N

N2O-N as % total N

d.f.

15N atom%

15N2O-N

Date

F3,57

P

4.15

 = 0.01

4.1

 = 0.011

2.96

 = 0.04

F3,64

NS

NS

Soil

F3,57

P

8.13

 < .001

8.24

 < .001

NS

F3,64

P

33.26

 < .001

10.7

 < .001

Plant

F1, 57

P

15.62

 < .001

14.83

 < .001

15.89

 < .001

F1, 64

NS

NS

Soil × plant

F3, 57

P

10.24

 < .001

10.23

 < .001

4.56

 = 0.006

F3, 64

P

10.67

 < .001

9.1

 < .001

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