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Table 1

Soil Tillage Intensity Rating (STIR) for Different Cropping Systems and Different Tillage Systems

STIR = Soil Tillage Intensity Rating

STIR for Different Cropping Systems and Different Tillage Systems
Cropping Rotation Soil STIR
1. No Till Spring Wheat - Winter Wheat or Flax or Peas or Safflower - Lentils
7-inch single disc drill, broadcast fertilizer preplant, graze winter wheat stubble and lentil crop		 Sandy Loam 3
2. No Till Spring Wheat - Winter Wheat - Flax or Peas or Safflower - Corn
7-inch single disc drill, broadcast fertilizer preplant, graze winter wheat stubbleand bale corn crop		 Sandy Loam 3
3. No Till Winter Wheat/Rye - Safflower or Peas or Buckwheat or Yellow Mustard - Spring Wheat - Spring Wheat
7 inch single disc drill, fertilize with drill, graze wheat stubble 1 out of 4 years		 Sandy Loam 6
4. No Till Winter Wheat - Hay Barley - Winter Wheat - Hay Barley
7 inch disc drill, apply anhydrous fertilizer, graze stubble each year		 Clay Loam 6
5. No Till Winter Wheat/Rye - Safflower or Peas or Buckwheat or Yellow Mustard - Spring Wheat - Spring Wheat
7 inch single disc drill, apply fertilizer with drill, graze wheat stubble 2 out of 3 years		 Sandy Loam 7
6. No Till Winter Wheat/Rye - Safflower or Peas or Buckwheat or Yellow Mustard - Spring Wheat - Spring Wheat
7 inch single disc drill, apply fertilizer with drill, no grazing, heavy harrow after second spring wheat crop		 Sandy Loam 10
7. No Till Winter Wheat - Hay Barley - Winter Wheat - Hay Barley
7 inch double disc drill, apply anhydrous fertilizer each year, graze stubble each year		 Sandy Loam 10
8. Minimum Till Spring Wheat/Winter Wheat - Lentils - Hay Barley/Corn Sandy Loam 19
9. Minimum Till Spring Wheat/Winter Wheat - Lentils - Hay Barley/Corn
7.5 inch double disc drill, broadcast fertilize preplant, harrow 2 times per year, graze stubble, corn and lentil crops		 Sandy Loam 23
10. Minimum Till Spring Wheat - Fallow - Winter Wheat - Barley
10 inch hoe drill, broadcast fertilizer preplant, 6-12 inch sweep cultivator/rodweeder, graze stubble one year, bale straw one year		 Clay Loam 71
11. Minimum Till Winter Wheat - Barley/Oats - Fallow
10 inch hoe drill, no fertilizer, sweep shovel chisel/rodweeder/harrow, graze stubble		 Silty Clay 80
12. Minimum Till Winter Wheat - Barley - Fallow
10 inch hoe drill, broadcast fertilizer preplant, 16 inch swee cultivator/rodweeder, graze stubble one year, bale straw one year, disc once		 Clay Loam 95
13. Minimum Till Spring Wheat - Fallow - Winter Wheat - Fallow
10 inch hoe drill, no fertilizer, sweep shovel chisel, graze stubble, disc following two years no/zero till		 Silty Clay 96
14. Minimum Till Spring Wheat - Fallow - Winter Wheat - Barley
10 inch hoe drill, broadcast fertilizer preplant, three tillages with 13 inch sweepcultivator/rodweeder, graze stubble two years, bale straw one year, disc twice		 Silty Clay 99
15. Conventional Till Winter Wheat - Fallow - Barley -Fallow
10 inch hoe drill, broadcast fertilizer preplant, three tillages with 13 inch sweepcultivator/rodweeder, graze stubble one year, bale straw one year, disc twice		 Silty Clay 100
16. Conventional Till Spring Wheat - Fallow - Winter Wheat - Fallow
10 inch hoe drill, no fertilizer, four tillages with fallow with 13 inch plussweep shovel chisel, graze stubble		 Silty Clay 114
17. Conventional Till Winter Wheat - Fallow - Winter Wheat - Fallow
10 inch hoe drill, no fertilizer, four tillages with fallow with 13 inch plussweep shovel chisel/rodweeder, graze stubble		 Silty Clay 123

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