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Trend for Precision Soil Testing % Zone or Grid Samples Tested compared to Total Samples. AGVISE Laboratories % Zone or Grid Samples Tested Compared to Conventional Whole Field Composite Samples in 2013. AGVISE Laboratories %Zone or Grid Samples – Northwood laboratory 1997 - 2013.

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Trend for Precision Soil Testing % Zone or Grid Samples Tested compared to Total Samples


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slide2
AGVISE Laboratories%Zone or Grid Samples Tested Compared to Conventional Whole Field Composite Samples in 2013
agvise laboratories zone or grid samples northwood laboratory 1997 2013
AGVISE Laboratories%Zone or Grid Samples – Northwood laboratory1997 - 2013

% Grid or Zone Samples Tested Compared To

Conventional Whole Field Composite Samples Tested

slide4

Average Soil Nitrate following Wheat in 2013

Fall 2013 samples

(lb/a 0-24” samples)

34

27

38

49

54

slide6

Average Soil Nitrate following Wheat in 2013

MB

Fall 2013 Samples

31

(lb/a 0-24” samples)

47

40

52

24

42

38

54

23

32

28

35

30

ND

40

30

33

29

35

40

37

MN

39

44

SD

51

61

slide8

% Soil Samples with Phosphorus less than 10 ppm

Fall 2013 samples (0-6”)

(Olsen P test)

45%

67%

36%

53%

52%

26%

slide9

% Soil Samples with Potassium less than 150 ppm

Fall 2013 samples (0-6”)

15%

12%

1%

15%

10%

7%

slide10

% Soil Samples with Zinc less than 1.0 ppm

Fall 2013 samples (0-6”)

92%

81%

81%

47%

63%

53%

slide11

% Soil Samples with Sulfur less than 15 lb/a

Fall 2013 samples (0-6”)

61%

54%

46%

20%

12%

35%

slide12

% Soil Samples with Copper less than 0.5 ppm

Fall 2013 samples (0-6”)

1%

6%

2%

5%

3%

1%

slide13

% Soil Samples with Boron less than 0.4 ppm

Fall 2013 samples (0-6”)

18%

11%

10%

5%

1%

3%

slide14

% Soil Samples with Chloride less than 40 lb/a

Fall 2013 samples (0-6”)

82%

66%

71%

48%

42%

58%

slide15

% Soil Samples with Carbonate greater than 5.0%

Fall 2013 samples (0-6”)

3%

24%

17%

14%

5%

46%

slide16

% Soil Samples with Salts greater than 1.0 mmhos/cm

Fall 2013 samples (0-6”)

2%

2%

3%

5%

8%

3%

slide17

% Soil Samples with soil pH greater than 7.3

Fall 2013 samples (0-6”)

66%

76%

72%

88%

92%

79%

slide18

% Soil Samples with soil pH less than 6.0

Fall 2013 samples (0-6”)

4%

4%

3%

2%

1%

2%

slide19

% Soil Samples with %OM less than 3.0%

Fall 2013 samples (0-6”)

96%

84%

71%

83%

88%

47%

slide20

Zip codes for Montana

599

595

592

594

598

596

593

590-591

597