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Managing Carbon and Nutrients for Sustainable Agriculture in Washington State

This presentation highlights sustainable agricultural practices in Washington State, focusing on the integration of carbon and nutrient management to mitigate climate change impacts. Chad Kruger, a BIOAg Educator at WSU, outlines the Climate Friendly Farming initiative aimed at fostering relationships among WSU, farmers, and environmental groups to promote economically viable, environmentally sound, and socially acceptable practices. Key topics include carbon sequestration, nitrogen use efficiency, biomass energy potential, and innovative agricultural systems designed to support sustainability.

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Managing Carbon and Nutrients for Sustainable Agriculture in Washington State

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  1. Managing carbon and nutrients for sustainable agriculture systems in Washington State Climate Friendly FarmingTM Chad Kruger BIOAg Educator Ctr. For Sustaining Ag & Natural Resources WSU Sustainability Week October 23, 2006

  2. The Mission of CSANR is to . . . develop and foster agriculture and natural resource management that is • economically viable • environmentally sound, and • socially acceptable through interdisciplinary relationships between WSU, growers, industry, environmental groups, agencies, and the people of Washington.

  3. Climate Friendly FarmingTM:Moving from Source to Sink Washington State University helping farmers develop and implement agricultural systems and practices that mitigate global climate change.

  4. Source: Seattle PI Methane blanket around earth, GISS, NASA Mountain Pine Beetle, British Columbia. Photo by Lorraine Maclauchlan, Ministry of Forests, Southern Interior Forest Region Source: IPCC Global Environmental Degradation

  5. Global Carbon Pools / Annual Flux Atmosphere, 750 Gt Fossil fuels, 4000 Gt Terrestrial, 2000 Gt Soil 1550 Gt Biota 450 Gt Oceans 38,000 Gt Lal et al. (1995)

  6. Global Environmental Degradation

  7. Agriculture as a source of GHG’s • Ag emits approximately 7% of US greenhouse gas emissions, the third largest source after the energy and transportation sectors (EPA 2004); ~20% of global emissions. • 65% of methane emissions are from agriculture (methane is 21 X’s as potent of GHG as CO2). • 40% of N2O emissions are due to agriculture (nitrous oxide is 310 X’s as potent of GHG as CO2).

  8. Carbon Sequestration: Tillage, Crop Rotation Impact of crop rotation on soil carbon storage

  9. N2O Fluxes – Quincy Sand (Patterson)

  10. Site-Specific N Management Soil Organic Carbon (0-10 cm, g/kg) Nitrogen Use Efficiency: Managing variability in the landscape 10 – 20% reduction in N applied without yield/quality consequence

  11. Rapeseed Crambe Safflower Mustard Soybean Flax Sunflowers Biomass Energy and Products from Agriculture

  12. Home Grown Energy: Biomass Crops Blue-bunch wheat grass switchgrass Reed canary grass Hybrid poplar

  13. Wang, 2005

  14. Biogas Collection Anaerobic Digester 1 2 3 4 5 Biomass Inventory Calculate Dry Values Identify Biomass Categories Inventory By County and Category Calculate Methane Potential Convert to electricity Eastern Washington 4.3 M tons/year 3.1 billion kWh 40% EW residential need Entire State 1769 MW capacity 50% of state residential need ~1.5 billion g ethanol > 12 million tons CO2 reduction

  15. Chen group novel AD system concept – patent pending

  16. Dairy manure anaerobic digestion co-product research and development Nutrients CHP, LNG / CNG, Hydrogen, fertilizer, plastics textiles Fiber Carbon Credit & Green Tag

  17. Contact Information: Chad Kruger, BIOAg Educator WSU, CSANR 1100 N. Western Ave. Wenatchee, WA 98801 509-293-5847 http://csanr.wsu.edu http://cff.wsu.edu cekruger@wsu.edu

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