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Sand County Foundation

When land does well for its owner, and the owner does well by his land; when both end up better by reason of their partnership, we have conservation. When one or the other grows poorer, we do not. - Aldo Leopold. Sand County Foundation. Agricultural Causes of Nitrogen Runoff.

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Sand County Foundation

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  1. When land does well for its owner, and the owner does well by his land; when both end up better by reason of their partnership, we have conservation. When one or the other grows poorer, we do not. - Aldo Leopold Sand County Foundation

  2. Agricultural Causes of Nitrogen Runoff 3 Key Functions Altered Nitrogen Discharge Increase Use of Synthetic Nitrogen Move Water Off Landscape Very Efficiently Shift Crops From Forage and Small Grains To Expanded Large Grand Production

  3. Nitrogen Application Mississippi Basin

  4. Wetlands Loss

  5. Subsurface Agricultural Drainage

  6. Disconnect Riparian Functions

  7. Top 10% Nitrogen Contribution

  8. Fertilizer Prices

  9. Price of Ag Commodities Commodity Price Change Corn + 170 % Soybeans + 155 % Fertilizer + 228 % April 2008 VS January 2000 National Agricultural Statistics Service, USDA

  10. Overcoming ImpedimentsCreates Performance Data A Comparative Analysis of the Environmental And EconomicPerformance of Management Alternatives • In other words • Which practices are most effective at environmental improvement (recognizing location variations) • What are the costs of various practices • What is the return on investment

  11. Nitrogen Management PotentialDischarge Reductions • Agronomic Practices 20 - 30% • Cover Crops 10 - 40% • Drainage Management 20 - 50% • Bioreactors 20 - 40% • Bioreactors w/ Drainage Mgt. 50 - 80% • Wetlands 5 - 60% • Minimize drainage intensity 5 - 35% • (for replacement systems)

  12. Sand County Foundation Alex Echols echols@conrod.com 703/660-2366 http://www.sandcounty.net

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