Goodwin, Jr., H.L. “Water Quality Alternatives & Solutions: Northwest Arkansas” presented at Arkansas Water: New Challenges – New Solutions Conference, Ferndale, AR, Nov. 19, 2004.

Goodwin, Jr., H.L. “TMDL and Nutrient Trading: How Will it Work?” presented at the National Poultry Waste Management Symposium, “Balancing Economic and Environmental Issues,” Memphis, TN, Oct. 24-26, 2004.

Goodwin, Jr., H.L. “When Municipalities Sue the Poultry Industry: Who Wins?” presented at the National Poultry Waste Management Symposium, “Balancing Economic and Environmental Issues,” Memphis, TN, Oct. 24-26, 2004.

Goodwin, Jr., H.L. “Potential for Mutual Cooperation to Address Water Quality Concerns from Poultry Litter” presented at “Discussion and Action on Water Shed Committee” at Poteau Valley Improvement Authority Board of Trustees,
Wister, OK, Oct. 5, 2004.

Goodwin, H.L. Jr. “Progress on Establishing the Ozark Litter bank: Preliminary Indications” presented at the Arkansas Water Quality Symposium, Fayetteville, AR, May 5, 2004.

King-Brister, S. and M. Popp. 2004. “Livestock Feeding Analysis Tool.” University of Arkansas, Cooperative Extension Service. Interactive spreadsheet tool available since August 2004 at http://www.aragriculture.org/farmplanning/Budgets/default.asp

Manning, P., J. Edwards, M. Popp and L. Purcell. 2004. “Are Early-Maturity Soybean a Profitable Alternative for Arkansas.” Poster presented at Field Days in Stuttgart (8/11), Keiser (8/26) and Brinkley (12/14), AR.

Mattingly, B., P. Manning, J. Voon, H. Himstedt, E. Clausen, M. Popp, and R. Babcock. 2004. “Comparative Esterification of Agricultural Oils for Biodiesel Blending.” Final Report Award Number MBTC-2052. Mack Blackwell Transportation Center. Available on line at http://www.mackblackwell.org/research/finals/arc2052/Mack%20Blackwell%20F
inal%20Report.htm

Popp, M., P. Manning, E. Clausen and R. Babcock. “Different Feedstock... Different Biodiesel?” Sun Grant Initiative South Central Region Conference, Oklahoma City, Oklahoma. June 14-15, 2004.

Popp, M., P. Manning, E. Clausen and R. Babcock. “Different Feedstock... Different Biodiesel?” Lurgi PSI, Memphis, Tennessee. September 21, 2004.

Popp, M., P. Manning, L. Purcell and J. Edwards. “Profit-Maximizing Seeding Rates and Reseeding Thresholds for Soybean: Maturity Group Interactions in the Mid-South.” Poster presented at Field Days in Stuttgart (8/11), Keiser (8/26) and Brinkley (12/14), AR.

Popp, M., L. Purcell, J. Rupe, C. Rothrock, J. Edwards, P. Manning and P. Poag. “Early-Maturity Soybeans, Seeding Rate and Replanting Thresholds?” Field day presentation at Stuttgart, Arkansas. August 11, 2004.

Rainey,Daniel and Olga Murova. "Transportation Infrastructure and Rural Economic Growth". Final Research Report to Mack-Blackwell Rural Transportation Center. September 1, 2004.