Brief Summary of Minutes of Annual Meeting

NC1195 Minutes 2013 Project number: NC-1195 Project title: Characterizing active soil organic matter pools controlling soil N availability in maize-based cropping systems Period Covered: October 2011-September 2012 Annual Meeting: March 13-14, 2013; Kansas City, MO. Wednesday, March 13 Approval of Minutes: All approved Attendees: Will Horwath, Rhae Drijber, Carrie Laboski, Dave Mengel , Fabian Fernandez, Peter Scharf, John Sawyer, Sue Blodgett Sue Report: Administrative update on sequestration. State Reports: CA, Will Horwath: Influence of oxygen on nitrous oxide production pathways in agricultural soils NE, Rhae Drijber: AMF in maize agroecosystems MN, Carrie Laboski: Soil nitrate monitoring website Dairy manure application methods: N credits and N losses IA, John Sawyer: Iowa strategy to reduce nutrient loss: nitrogen & phosphorus practices MO, Peter Scharf: Nitrogen discussion IN, Fabian Fernandez: Nitrogen forms & application KS, Dave Mengal: N management research Project Publications 2012: Wingeyer, A.B., D. Walters, R. Drijber*, D.C. Olk, T. Arkebauer, S. Verma, D. Wedin, C. Francis. 2012. Fall conservation deep tillage stabilizes maize residues into soil organic matter. Soil Science Society of America Journal 76:21542163. Wingeyer, A., R. Drijber*, D. Olk. 2012. Stabilization of new light fraction and humified C in >250 ¼M aggregates after conversion from no-till to fall conservation deep tillage. pp. 6. Mar del Plata: Proc. XIX Latin-American Soil Sci. and XXIII Argentinian Soil Sci. Congress. Asociacion Argentina de la Ciencia del Suelo. Wingeyer, A., D. Olk, R. Drijber*, T. Grimard. 2012. Aggregate stability and monosaccharides after three years of fall conservation deep tillage. pp. 6. Mar del Plata: Proc. XIX Latin-American Soil Sci. and XXIII Argentinian Soil Sci. Congress. Associacion Argentina de la Ciencia del Suelo. Toosi ER, Castellano MJ*, Singer J, Mitchell D. 2012. Differences in soluble organic matter after 23 years of contrasting soil management. Soil Science Society of America Journal 76:628-637. Castellano MJ*, Kaye JP, Lin H, Schmidt JP. 2012. Linking soil carbon saturation concepts to nitrogen retention and saturation. Ecosystems 15:175-187. Barker, D.W., and J.E. Sawyer*. 2012. Using active canopy sensing to adjust nitrogen application rate in corn. Agron. J. 104:926-933. Thursday, March 14, 2013 Business Meeting Slate for 2014: Chair: Rhae Secretary: Carrie Member at large: Peter (organize hotel) Meeting logistics for next year: Someone bring a projector ($75/day) and power strip ($5/day)!!! Product Development: 1. Monograph 2. Review article 3. Extension bulletin Discussion around review article and possible conflict with other multigroup currently writing a review on N rate recommendations. Dave: how about a review article on 1. Nitrification inhibitors using data from this group? 2. Urease inhibitors? 3. Sensors? Jeff Wolt article in Nutrient Cycling in Agroecosystems. John: N rate recommendations & risk management: impact on economics, water and soil quality. Mike wrote a report to the Iowa legislature on N & P balances in Iowa cropping systems: sustaining Iowas soil resource Impact of N rates on soil C Fabian: use Johns management sheet to develop something to reach a broader target audience Wills charge: what are we doing and how are we going to get it done! Nitrification inhibitors Economic conundrum: environmental consequences of economic N rate within cropping systems 2014 Meeting: March 12-13th

Outputs: Project Publications 2012: Wingeyer, A.B., D. Walters, R. Drijber*, D.C. Olk, T. Arkebauer, S. Verma, D. Wedin, C. Francis. 2012. Fall conservation deep tillage stabilizes maize residues into soil organic matter. Soil Science Society of America Journal 76:21542163. Wingeyer, A., R. Drijber*, D. Olk. 2012. Stabilization of new light fraction and humified C in >250 ¼M aggregates after conversion from no-till to fall conservation deep tillage. pp. 6. Mar del Plata: Proc. XIX Latin-American Soil Sci. and XXIII Argentinian Soil Sci. Congress. Asociacion Argentina de la Ciencia del Suelo. Wingeyer, A., D. Olk, R. Drijber*, T. Grimard. 2012. Aggregate stability and monosaccharides after three years of fall conservation deep tillage. pp. 6. Mar del Plata: Proc. XIX Latin-American Soil Sci. and XXIII Argentinian Soil Sci. Congress. Associacion Argentina de la Ciencia del Suelo. Toosi ER, Castellano MJ*, Singer J, Mitchell D. 2012. Differences in soluble organic matter after 23 years of contrasting soil management. Soil Science Society of America Journal 76:628-637. Castellano MJ*, Kaye JP, Lin H, Schmidt JP. 2012. Linking soil carbon saturation concepts to nitrogen retention and saturation. Ecosystems 15:175-187. Barker, D.W., and J.E. Sawyer*. 2012. Using active canopy sensing to adjust nitrogen application rate in corn. Agron. J. 104:926-933.

Project Publications 2012: Wingeyer, A.B., D. Walters, R. Drijber*, D.C. Olk, T. Arkebauer, S. Verma, D. Wedin, C. Francis. 2012. Fall conservation deep tillage stabilizes maize residues into soil organic matter. Soil Science Society of America Journal 76:21542163. Wingeyer, A., R. Drijber*, D. Olk. 2012. Stabilization of new light fraction and humified C in >250 ¼M aggregates after conversion from no-till to fall conservation deep tillage. pp. 6. Mar del Plata: Proc. XIX Latin-American Soil Sci. and XXIII Argentinian Soil Sci. Congress. Asociacion Argentina de la Ciencia del Suelo. Wingeyer, A., D. Olk, R. Drijber*, T. Grimard. 2012. Aggregate stability and monosaccharides after three years of fall conservation deep tillage. pp. 6. Mar del Plata: Proc. XIX Latin-American Soil Sci. and XXIII Argentinian Soil Sci. Congress. Associacion Argentina de la Ciencia del Suelo. Toosi ER, Castellano MJ*, Singer J, Mitchell D. 2012. Differences in soluble organic matter after 23 years of contrasting soil management. Soil Science Society of America Journal 76:628-637. Castellano MJ*, Kaye JP, Lin H, Schmidt JP. 2012. Linking soil carbon saturation concepts to nitrogen retention and saturation. Ecosystems 15:175-187. Barker, D.W., and J.E. Sawyer*. 2012. Using active canopy sensing to adjust nitrogen application rate in corn. Agron. J. 104:926-933.