Crop

Depth

Jan 2005

Jul 2005

Nov 2005

Jan 2006

Mar 2006

Jan 2007

Mar 2007

Control Field³

Wheat

Subsurface¹

40

36

10

8

6

5

2.5

0

Surface²

32

88

21

6

13

4

6

0

Barley

Subsurface

37

17

12

3

7

6

2.5

0

Surface

41

21

15

8

16

5

4

0

Field Average

Subsurface

39

27

11

5

6

5.5

2.5

0

Surface

36

57

18

7

15

4.5

5

0