Table 4 Sample size requirement for LAP, NAG, Nacq, AP and UREA (µmol g− 1 soil h− 1) under the relative error of 10% under three N fertilization treatments (NN, LN and HN) in two bioenergy croplands (SG and GG).

From: Effects of nitrogen fertilization and bioenergy crop type on spatial distributions of extracellular hydrolases associated with nitrogen and phosphorus acquisition

Enzyme

Crop type

Relative error, %

NN

LN

HN

LAP

SG

10

46

36

28

LAP

GG

10

18

19

23

NAG

SG

10

68

22

34

NAG

GG

10

14

17

29

Nacq

SG

10

53

25

19

Nacq

GG

10

17

24

14

AP

SG

10

64

30

23

AP

GG

10

20

31

18

UREA

SG

10

37

41

49

UREA

GG

10

52

45

36

  1. Each sample size denotes the average sample size in two plots under the same treatment.
Back to article page