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How To Manage Soil Nitrogen and Carbon Sequestration


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John Kempf describes how to manage soil nitrogen and carbon sequestration for abundant microbial communities. With these slides, John provides an in-depth explanation of the roles of water, oxygen, and soluble carbon in soil.

John explains how the limiting factor for building biology is soluble carbon, not water as many people believe. You will learn why carbon sequestration is important to crop performance, and which elements are needed to stabilize nitrogen in the soil. See the video recording of this presentation here:

Published in: Education
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How To Manage Soil Nitrogen and Carbon Sequestration

  2. 2. Healthy Soil Biology needs three things:
  3. 3. Oxygen. Water. Food.
  4. 4. Oxygen from Soil Aeration
  5. 5. Powdery dry soil still contains 70% moisture in adsorbed water tightly bounded to the soil colloids.
  6. 6. Biology can access this adsorbed water (roots cannot)
  7. 7. The limiting factor to healthy soil biology:
  8. 8. Food. Not water.
  9. 9. Food source for biology: soluble carbon.
  10. 10. Many soils no longer have enough carbon
  11. 11. Healthy organic matter does not equal soluble carbon
  12. 12. Build soluble carbon with root biomass and root exudates
  13. 13. Build soil carbon with really healthy plants
  14. 14. And with carbon sequestration
  15. 15. 70% of root exudates, 50% of the root biomass, and 30% of the above ground plant biomass contribute to increased organic matter
  16. 16. Fall nitrogen applications degrade soluble carbon
  17. 17. by oxidizing and releasing it into the atmosphere as carbon dioxide
  18. 18. Only 20% of applied nitrogen is used by the crop. Most is leached away and lost to the environment.
  19. 19. Our solution to building microbial communities
  20. 20. Step 1. Build high levels of soluble carbon with really healthy crops and photosynthesis
  21. 21. Step 2. Apply nitrogen only as needed when needed
  22. 22. Step 3. Stabilize nitrogen with sulfur, carbon, and molybdenum to reduce application requirements
  23. 23. Call AEA consultant Jason Stoll to learn about our nitrogen efficiency programs! (800) 495-6603 ext 300