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Crop Residue, is this stuff useful for anything?

Crop Residue, is this stuff useful for anything?. What does residue help us with?. Erosion, Wind and Water Soil Moisture Trapping 12 inches of snow is equal to one inch of soil moisture 1 inch of soil moisture approximates 5 bushels of wheat. Soil Structure Soil Nutrients Soil Carbon

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Crop Residue, is this stuff useful for anything?

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  1. Crop Residue, is this stuff useful for anything?

  2. What does residue help us with? • Erosion, Wind and Water • Soil Moisture • Trapping 12 inches of snow is equal to one inch of soil moisture • 1 inch of soil moisture approximates 5 bushels of wheat

  3. Soil Structure • Soil Nutrients • Soil Carbon • Soil Biology • Wildlife Habitat

  4. Nutrient Value of Residue • 1 ton of straw is equal to: • 16# of N • 5# P • 35# K • Straw nutrients = 16-5-35 (N-P-K) per ton

  5. OM and Soil Quality • Soil organic matter is the nation’s most precious resource • OM helps surface structure become more stable and less prone to crusting and erosion.

  6. Improves water infiltration. • Soil organic matter holds 10 to 1,000 times more water and nutrients than the same amount of soil minerals.

  7. Beneficial soil organisms become more numerous and active with diverse crop rotations and higher organic matter levels. • The best current estimate is that it takes 2 – 3 ton/acre annually of crop residue to maintain soil organic matter using no-till or conservation tillage.

  8. Winter Wheat Straw Yields • How do I get 2 – 3 tons of straw? • 20 bu/ac X 60#/bu = (1,200 lbs)/2000 = 0.9 T • 40 bu/ac X 60#/bu =(2,400 lbs)/2000 = 1.2 T • 60 bu/ac X 60# =(3,600 lbs)/2000 = 1.8T

  9. Fertilizer Values • Current price per pound” • N = $0.35/lb • P = $0.50/lb

  10. Nitrogen value • 20 bu yield = • 1200 pounds straw. (0.6 T) • 18#N/T • 10.8# N • $0.35/lb • $3.78

  11. Phosphorus Value • 20 bu yield • 1200 pounds straw. (0.6 T) • 5#P/T • 3# P • $0.50/lb • $1.50

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