AGVISE Laboratories%Zone or Grid Samples – Northwood laboratory

1997 - 2011

22%18%

14% 15%11%

8%11%

15%11%

15% 16%

26%28%

31%33%

0%

10%

20%

30%

40%

50%

60%

70%

1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011

% Grid or Zone Samples Tested Compared To Total Number of Samples Tested

AGVISE Laboratories%Zone or Grid Samples Tested Compared to

Total Number of Samples Tested in 2011

71%

26%

54%

31%40%

53%

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

MN ND SD MT MB Overall

Fall 2011 samples

26

38

32

Average Soil Nitrate following Wheat in 2011

(lb/a 0-24” samples)

36

36

42%

33%

13%

5%

3%

2%

2%

0% 10% 20% 30% 40% 50% 60%

0-20

21-40

41-60

61-80

81-100

101-120

>120

Nit

rate

Cat

ego

ry

To

tal

Nit

rate

0-2

4" l

b/a

% of Fields Testing in Each Category

Soil Nitrate Variability Between Fields Following “WHEAT” in Montana - 2011

40

3940

4847

44

37 44

29

35

45

49

33 4249

Average Soil Nitrate following Wheat in 2011

Fall 2011 Samples

(lb/a 0-24” samples)

MB

ND

SDMN42

34

3946

41 56

38

5556

12%

53%

22%

6%

3%

2%

2%

0% 10% 20% 30% 40% 50% 60%

0-20

21-40

41-60

61-80

81-100

101-120

>120

Nit

rate

Cat

ego

ry

To

tal

Nit

rate

0-2

4" l

b/a

% of Fields Testing in Each Category

Soil Nitrate Variability Between Fields Following “Fallow” in Montana - 2011

% Soil Samples with Phosphorus less than 10 ppm

Fall 2011 samples (0-6”)

70%

58%

41%

46%

45%

(Olsen P test)

32%

65%

60%77%

53%74%59%

83% 77%

71%

72%

34% 29%

21% 53%50%

28%60%

% Soil Samples with Phosphorus less than 10 ppm

Fall 2011 samples

(0-6” samples)MB

ND

SDMN

43%

(Olsen P test)38%

64%

36%

37%

36%

46%43%63%

55%46%66%

29%

% Soil Samples with Potassium less than 150 ppm

Fall 2011 samples (0-6”)

7%

21%

2%

1%

7%7%

24%

15%5%

5%

6%6%

3% 2%

51%

35%

15% 23%

28%28%

13%3%

% Soil Samples with Potassium less than 150 ppm

Fall 2011 samples(0-6” samples)

MB

ND

SDMN

29%8%

54%

29%

7%

43%40%

32%28%5%1%

0%

79%

74%

20%

% Soil Samples with Zinc less than 1.0 ppm

Fall 2011 samples (0-6”)

69%

53%

79%

89%

55%45%

64%

52%74%

52%72%85%

88% 80%

65%

72%

37% 31%

33%

28%

55%

53%

48%66%

% Soil Samples with Zinc less than 1.0 ppm

Fall 2011 samples(0-6” samples)

MB

ND

SDMN

38%

32%

36

64%22%

40%

55%

47%72%

82%

22%

49%

% Soil Samples with Sulfur less than 15 lb/a

Fall 2011 samples (0-6”)

58%

25%

49%

48%

25%52%

12%25%

34%66%43%

63% 31%

23%

13%

8% 14%

9%

14% 3%

14%

18%

26%11%

% Soil Samples with Sulfur less than 15 lb/a

Fall 2011 samples(0-6” samples)

MB

ND

SDMN

17%

55%

49%

75%37%

53%

40%

51%

32%

22%

22%

67%

63%

% Soil Samples with Copper less than 0.5 ppm

Fall 2010 samples (0-6”)

3%

2%

1%

1%

1%

12%17%

7%17%10%

2% 3%

2%

5%

20%

27%

21%

4%

0%1%

7%

12% 3%

22%15%

8%3%

% Soil Samples with Copper less than 0.5 ppm

Fall 2011 samples(0-6” samples)

MB

ND

SDMN

13% 2%

9%

4%

11%

45%

30%

8%

% Soil Samples with Boron less than 0.4 ppm

Fall 2011 samples (0-6”)

5%

5%

6%

6%

4%2%

4%

8%5%

3%17%

13%

3%

42%

5%

1% 2%

4%1%

10%0%

% Soil Samples with Boron less than 0.4 ppm

Fall 2011 samples(0-6” samples)

MB

ND

SDMN

0%

20%58%

88%

26%

19%21%

15%30%7%

% Soil Samples with Chloride less than 40 lb/a

Fall 2011 samples (0-6”)

82%

81%

82%

80%

60%69%

67%

47%73%

78%94%92%

96% 82%

89%

57%

32%

81%

69%

48%

51%

44% 43%

21% 66%61%

64%79%

% Soil Samples with Chloride less than 40 lb/a

Fall 2011 Samples(0-24” samples)

MB

ND

SDMN

59%

89%

92%

46%

% Soil Samples with Carbonate greater than 5.0%

Fall 2011 samples (0-6”)

19%

14%

20%

3%54%

11%

8%

22%9%

5%6%

3%

10%

32%

25%

24%

5%

6%1%

13% 43%

18%38%

13%8%

% Soil Samples with Carbonate greater than 5.0%

Fall 2011 samples(0-6” samples)

MB

ND

SDMN

22%

1%5%

25%

35%

% Soil Samples with Salts greater than 1.0 mmhos/cm

Fall 2011 samples (0-6”)

3%

5%

4%

4%

8%4%

24%

36%15%

7%1%3%

2% 7%

1%

4%

18%

20%

1%

9%

2%

22%

21% 14%

19%18%

7%11%

% Soil Samples with Salts greater than 1.0

Fall 2011 Samples(0-6” samples)

MB

ND

SDMN

11%

11%1%

4%

3%

0%

4%

21%

33%

% Soil Samples with soil pH greater than 7.3

Fall 2010 samples (0-6”)

78%

86%

78%

69%

93%73%

69%

80%75%

38%40%42%

75% 56%

26%

58%

82%

96%

64%

33%

20%

23%

76% 73%

63%82%

68%80%

% Soil Samples with Soil pH greater than 7.3

Fall 2011 samples(0-6” samples)

MB

ND

SDMN

74%

30%21%

25%

17%

5%

65%

96%

% Soil Samples with %OM less than 3.0%

Fall 2011 samples (0-6”)

81%

81%

73%

94%

88%58%

22%

19%31%

21%32%

53%

67% 37%

25%

19%

22% 8%

35%

6%

13%

30%9%

% Soil Samples with %OM less than 3.0%

Fall 2011 samples(0-6” samples)

MB

ND

SDMN

6%

5%

8%

82%

29%

14%8%28%

26%

20%

50% 10%31%

8%

592

593

594

595

Zip codes for Montana

590-591

599

598

597

596