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

2. AGVISE Laboratories % Zone or Grid Samples Tested Compared to Conventional Whole Field Composite Samples in 2012

3. AGVISE Laboratories %Zone or Grid Samples – Northwood laboratory 1997 - 2012 % Grid or Zone Samples Tested Compared To Conventional Whole Field Composite Samples Tested

4. 43 44 47 50 51 33 47 48 44 43 50 4142 64 Average Soil Nitrate following Wheat in 2012 Fall 2012 Samples (lb/a 0-24 samples) MB ND SD MN 42 39 38 65 44 48 43 67 57

5. Average Soil Nitrate Following WHEAT in Canada 1986-2012 86 88 90 92 94 96 98 00 02 04 06 08 10 12 64 59 107 96 81 68 42 38 50 42 39 50 46 47 49 58 56 Nitrate-N (0-24) lb/a 50 35 49 Drought 52 41 39 34 40 50

6. Soil Nitrate Variability Between Fields Following Wheat in Canada - 2012

7. 40 49 48 41 46 5075 74 Average Soil Nitrate following Canola in 2012 Fall 2012 Samples (lb/a 0-24 samples) MB ND SD MN 47 72 43 63 54

8. Soil Nitrate Variability Between Fields Following Canola in Canada – 2012

9. Average Soil Nitrate Following Canola in Canada 1988-2012 88 90 92 94 96 98 00 02 04 06 08 10 12 75 60 82 40 32 29 34 37 36 44 53 57 51 60 57 Nitrate-N (0-24) lb/a 43 49 58 44 45 35 36 40 54

10. Soil Nitrate Variability Between Fields Following Barley in Canada - 2012

11. Average Soil Nitrate Following BARLEY in Canada 1986-2012 86 88 90 92 94 96 98 00 02 04 06 08 10 12 64 81 70 55 50 36 38 35 43 39 45 50 53 47 49 60 58 Nitrate-N (0-24) lb/a 64 44 58 66 49 46 37 54 58

12. Soil Nitrate Variability Between Fields Following Flax in Canada - 2012

13. Average Soil Nitrate Following FLAX in Canada 1988-2012 88 90 92 94 96 98 00 02 04 06 08 10 12 87 89 56 42 24 31 38 34 37 48 47 51 42 60 Nitrate-N (0-24) 58 32 40 64 38 45 29 34 39 55

14. Soil Nitrate Variability Between Fields Following Potato in Canada - 2012

15. Average Soil Nitrate Following POTATO in Canada 1988-2012 88 90 92 94 96 98 00 02 04 06 08 10 2011 81 106 92 61 72 54 51 70 73 74 93 81 96 79 68 Nitrate-N (0-24) 72 39 62 69 50 55 46 34 54 67

16. 52 46 54 68 57 54 67 44 77 64 63 113 Average Soil Nitrate following Corn in 2012 Fall 2012 samples (lb/a 0-24 samples) MB ND SD MN 56 83 63 62 89 50 85 114

17. Soil Nitrate Variability Between Fields Following Corn in Canada - 2012

18. Average Soil Nitrate Following CORN in Canada 1988-2012 88 90 92 94 96 98 00 02 04 06 08 10 12 117 96 65 59 63 71 54 55 6564 84 85 106 85 90 Nitrate-N (0-24) 54 93 64 80 58 60 45 42 54 77

19. Soil Nitrate Variability Between Fields Following Soybean in Canada 2012

20. Average Soil Nitrate Following Soybeans in Canada # of Fields Tested 607 827 865 1350 1579 2008 2009 2010 2011 2012

21. 56% 55% 66% 47% 68% 57% 78% 77% 69% 72% 34% 14% 20% 58% 50% 27% 60% % Soil Samples with Phosphorus less than 10 ppm Fall 2012 samples (0-6 samples) MB ND SD MN 38% (Olsen P test) 35% 67% 32% 36% 50% 46% 60% 57%47% 71% 36%

22. 21% 14% 3% 6% 7% 2% 48% 36% 17% 30% 32% 38% 11% 6% % Soil Samples with Potassium less than 150 ppm Fall 2012 samples (0-6 samples) MB ND SD MN 32% 11% 48% 21% 5% 35% 41% 31% 23% 4%1% 78% 77% 19%

23. 65% 56% 72% 54% 77% 86% 83% 65% 78% 35% 24% 35% 32% 59% 53% 49% 66% % Soil Samples with Zinc less than 1.0 ppm Fall 2012 samples (0-6 samples) MB ND SD MN 34% 35% 26% 59% 20% 36% 50% 49% 74% 91% 22% 44% 65%

24. 8% 14% 18% 49% 40% 54% 22% 21% 9% 12% 10% 5% 9% 7% 11% 15% 12% % Soil Samples with Sulfur less than 15 lb/a Fall 2012 samples (0-6 samples) MB ND SD MN 10% 46% 49% 69% 27% 38% 32% 44% 29% 19% 20% 59% 67%

25. 26% 22% 33% 25% 38% 60% 71% 43% 28% 21% 25% 17% 33% 8% 20% 29% % Soil Samples with %OM less than 3.0% Fall 2012 Samples (0-6 samples) MB ND SD MN 9% 3% 9% 75% 26% 17% 9% 28% 26% 55% 12% 26% 13%

26. 48% 38% 56% 59% 87% 85% 89% 65% 84% 41% 20% 77% 70% 57% 44% 30% 47% 13% 78% 55% 42% 59% % Soil Samples with Chloride less than 40 lb/a Fall 2012 Samples (0-24 samples) MB ND SD MN 51% 78% 85% 34% 57% 63%

27. 12% 17% 7% 13% 10% 2% 1% 4% 20% 29% 26% 5% 0% 2% 5% 16% 14% 26% 24% 10% 12% % Soil Samples with Copper less than 0.5 ppm Fall 2012 samples (0-6 samples) MB ND SD MN 15% 7% 10% 5% 14% 45% 41% 4%

28. 3% 7% 5% 2% 15% 2% 39% 5% 1% 13% 4% 1% 8% 2% % Soil Samples with Boron less than 0.4 ppm Fall 2012 samples (0-6 samples) MB ND SD MN 1% 9% 47% 75% 17% 9%8% 12% 9% 35% 27% 4% 0%

29. 65% 76% 70% 38% 35% 39% 62% 51% 25% 54% 79% 96% 43% 36% 22% 23% 75% 72% 74% 82% 42% 71% % Soil Samples with Soil pH greater than 7.3 Fall 2012 samples (0-6 samples) MB ND SD MN 65% 27% 34% 23% 15% 6% 67% 92% 84%

30. 12% 26% 10% 6% 7% 10% 29% 23% 44% 4% 9% 2% 17% 40% 22% 14% 10% % Soil Samples with Carbonate greater than 5.0% Fall 2012 samples (0-6 samples) MB ND SD MN 36% 1% 10% 24% 55% 13% 3% 1% 3% 9% 6%

31. 27% 37% 15% 10% 1% 4% 2% 8% 1% 4% 19% 3% 11% 2% 21% 17% 12% 23% 17% 8% 10% % Soil Samples with Salts greater than 1.0 Fall 2012 Samples (0-6 samples) MB ND SD MN 11% 12% 7% 6% 2% 0% 6% 17% 21%

32. Manitoba - % Samples Testing with Salts greater than 1.0 1:1 salt method – expressed as mmhos/cm 582 NE ND R0G R0K

33. The Salt Problem may be Worse than this? Composite samples –Avoid areas that dont represent most of the field Saline areas Sandy ridges Many salty fields dont get tested Zone sampling –The salty zones often do not get tested or fertilized