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

2. %Zone or Grid Samples Tested Compared to Conventional Whole Field Composite Samples in 2016

3. AGVISE Laboratories %Zone or Grid Samples – Northwood laboratory 1997 - 2016
% Grid or Zone Samples Tested Compared To
Conventional Whole Field Composite Samples Tested

4. Average Soil Nitrate following Wheat in 2016MB
Fall 2016 Samples 37 36
(lb/a 0-24” samples) 37 32 45 19 45 39 43 30 34 38 36 36 ND 60 43 45 41 45 49 55 MN 44 42 SD 43 50

5. Average Soil Nitrate Following “Wheat” 1986 – 2016 (0-24” lb/a)
Nitrate-N (0-24” lb/a)

6. Soil Nitrate Variability Between Fields Following “WHEAT” in 2016

7. Average Soil Nitrate Following “Wheat” (1986-2016) “Deep N” (24-48” lb/a)
Nitrate-N (0-24” lb/a)

8. Average Soil Nitrate Following “Barley” 1986 - 2016
Nitrate-N (0-24” lb/a)

9. Soil Nitrate Variability Between Fields Following “Barley” in 2016

10. Average Soil Nitrate Following “Sunflower” 1986 - 2016
Nitrate-N (0-24” lb/a)

11. Soil Nitrate Variability Between Fields Following “Sunflower” in 2016

12. Average Soil Nitrate Following “Drybeans” 1986 - 2016
Nitrate-N (0-24” lb/a)

13. Soil Nitrate Variability Between Fields Following “Dry Beans” in 2016

14. Average Soil Nitrate Following “Sugarbeets” 1986 - 2016
Nitrate-N (0-24” lb/a)

15. Soil Nitrate Variability Between Fields Following “Sugarbeet” in 2016

16. Average Soil Nitrate Following “Fallow” 1986 - 2016
Nitrate-N (0-24” lb/a)

17. Soil Nitrate Variability Between Fields Following “Fallow” in 2016

18. Average Soil Nitrate following Soybean in 2016
Fall 2016 samples MB 23 30
(lb/a 0-24” samples) 29 25 36 28 38 35 24 29 29 31 25 ND 27 29 28 22 27 32 MN 30 28 SD 30 31 24 27

19. Average Soil Nitrate Following “Soybeans” 1995 - 2016
Nitrate-N (0-24” lb/a)

20. Soil Nitrate Variability Between Fields Following “Soybeans” in 2016

21. Average Soil Nitrate following Corn in 2016
Fall 2016 samples MB
(lb/a 0-24” samples) 28 47 53 41 37 51 ND 50 53 61 48 52 60 75
101 MN 51 SD 37 63 33 53

22. Average Soil Nitrate Following “Corn” 1997 – 2016 (Northwood Laboratory)
Nitrate-N (0-24” lb/a)

23. Soil Nitrate Variability Between Fields Following “Corn” in 2016

24. % Soil Samples with Phosphorus less than 10 ppm
Fall 2016 samples MB
39%
(0-6” samples)
39%
(Olsen P test)
55%
60%
14%
73%
31%
23%
21%
71%
67%
71%
47%
69%
54% ND
45%
48%
51%
59%
62%
26%
61%
38%
50% MN
37% SD
41%
39%
49%
37%
35%

25. % Soil Samples with Potassium less than 150 ppmMB
Fall 2016 samples
25%
13%
(0-6” samples)
26%
26%
21% 6%
13%
10%
26% 5% 4% 1%
13%
36%
72% ND 8%
19%
59% 5%
41% 5%
46% 2% 5%
32% MN
33% SD
43% 1% 5%
35%
43%

26. % Soil Samples with Zinc less than 1.0 ppmMB
Fall 2016 samples
47%
58%
(0-6” samples)
62%
52%
26%
76%
44%
31%
33%
73%
81%
82%
41%
65%
34% ND
49%
70%
21%
77%
58% 53
19%
75%
44%
51% MN
27% SD
44%
57%
43%
38%
26%

27. % Soil Samples with Sulfur less than 15 lb/aMB
Fall 2016 samples
16%
23%
(0-6” samples)
16%
12% 9%
20%
25%
16%
16%
49%
21%
27%
13%
21%
52% ND
32%
76%
40%
21%
43%
52%
80%
67%
34%
49% MN
65% SD
90%
68%
44%
68%
88%

28. % Soil Samples with %OM less than 3.0%MB
Fall 2016 Samples 8%
10%
(0-6” samples)
21%
11%
34%
22%
34%
24%
25%
71%
33%
45%
26%
28%
37% ND
30%
60%
76%
29%
27%
35%
25%
55%
28%
13% MN
10% SD 9%
25%
29% 7% 4%

29. % Soil Samples with Chloride less than 40 lb/aMB
Fall 2016 Samples
44%
39%
(0-24” samples)
42%
63%
24%
80%
55%
37%
41%
84%
61%
69%
67%
45%
75% ND
64%
85%
54%
59%
86%
92%
90%
52% MN
62%
86% SD
61%
83%
75%

30. % Soil Samples with Copper less than 0.5 ppmMB
Fall 2016 samples
12% 7%
(0-6” samples)
28% 5%
31%
17%
18%
16%
22% 6%
15% 3%
23%
36%
36% ND
11%
56%
10%
30%
15%
14%
34%
16% 7% MN 6%
10% SD 6% 6% 4% 1%

31. % Soil Samples with Boron less than 0.4 ppmMB
Fall 2016 samples 2% 1%
(0-6” samples) 3% 1% 6% 2% 9% 2%
11% 3% 4% 2% 7% 8%
27% ND 4%
17%
34%
84% 4%
11%
57%
16%
13% 9% MN
14% SD
10%
36% 9%
11%
37%

32. % Soil Samples with Soil pH greater than 7.3MB
Fall 2016 samples
62%
94%
(0-6” samples)
79%
72%
91%
69%
57%
73%
78%
72%
75%
54%
73%
96%
45% ND
43% 8%
43%
64%
78%
27%
47%
11%
17% MN
40%
55% SD
43%
16%
28%
30%
21%

33. % Soil Samples with Soil pH less than 6.0MB
Fall 2016 samples 2% 0%
(0-6” samples) 4% 4% 0% 1%
15% 1% 7% 2% 1% 4% 6% 1%
11% ND
14%
34%
16% 3% 4%
13%
16%
17%
16% MN 9%
19%
13% SD
16%
18%
43%
10%
35%

34. % Subsoil Samples with pH less than 7.0MB
Fall 2016 samples 2% 1%
(0-6” samples) 4% 3% 0% 2%
16% 1% 3% 1% 1% 1% 3% 1% 5% ND 3%
52% 5% 2% 1% 6% 9%
17% 9% MN 3% 3%
13% SD
29%
10% 6%
19%
19%

35. % Soil Samples with Carbonate greater than 5.0%MB
Fall 2016 samples
30%
56%
(0-6” samples)
25%
22%
19% 2%
14% 8%
33%
11% 7% 4%
17%
24% 5% ND 9%
11%
11%
26% 4%
10% 0% 1% MN
12%
26% SD 4% 2% 1%
10%

36. % Soil Samples with Salts greater than 1.0MB
Fall 2016 Samples
18%
(0-6” samples)
13%
20%
19% 8% 4%
12%
20% 3%
15% 8%
24%
11% 6% ND
12% 4% 3%
19% 7% 2% 3%
19% MN 8% 3% SD 1% 2% 9% 1% 2%

37. North Dakota & NW Minnesota % Samples Testing with Salts greater than 1.0
582 Grand
Forks
567 TRF
587 Minot
1:1 salt method – expressed as mmhos/cm

38. South Dakota - % Samples Testing with Salts greater than 1.0
1:1 salt method – expressed as mmhos/cm

39. Zip Code Areas For Soil Test SummariesND MN SD