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*Disclaimer*
Posters, by their nature, are preliminary findings.  These data and their interpretation may be refined or changed before formal publication.  We encourage the user to benefit from their early insight into our most recent research, but not to regard them as the "final word" on these findings.

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• "Diurnal Changes in Forage Quality Affects Animal Preference, Intake, Performance" by H. F. Mayland, Dave Mertens and Bret Taylor (PowerPoint file)

• "Phosphorus Transfer and Transport In Irrigation Furrows" by D.L. Bjorneberg, D.T. Westermann, J.K. Aase (USDA-ARS, Kimberly, ID)
  A.J. Clemmens and T.S. Strelkoff (USDA-ARS, Phoenix, AZ)

• "Phosphorus Retention in Irrigation Canals" by N.O. Nelson and D.T. Westermann – USDA-ARS, Kimberly, ID

• "Irrigation System Effects on Surface Water Quality" by N.O. Nelson, D.L. Bjorneberg, and D.T. Westermann - USDA-ARS, Kimberly, ID

• "Animal Responses to Circadian Rhythms in Forage Quality" by Mayland, HF, JC Burns, DS Fisher, DR Mertens and JB Taylor
  USDA-ARS; Kimberly, ID; Raleigh, NC; Watkinsville, GA; Madison, WI; and Dubois, ID

• "Removing Soluble Phosphorus in Irrigation Return Flows with Alum Additions" by A.B. Leytem and D.L. Bjorneberg - USDA-ARS, Kimberly, ID
  

Far West Agribusiness Association 32nd Annual Fertilizer & Chemical Conference Jackpot, NV
January 10-12, 2005

• "Compaction and Soil Moisture" (download PowerPoint Presentation file) by R.E. Sojka

• Basic 3-phase Soil Physical Model
• General plant responses to compaction
• Effects of compaction on soil bulk density, strength, moisture, and aeration
• Effects of soil moisture on compaction
• Some data from Alfalfa
• Some management tips

2003 ASA Meeting at Denver, Colorado

• "Soil Strength Relationships of a Durinodic Xeric Haplocalcid Soil" by R.E. Sojka, W.J. Busscher and G.A. Lehrsch
  
  
• "Phosphorus Transfer in Runoff from Cultivated Western US Soils By Simulated Rainfall" by B.L. Turner, D.T. Westermann, M.A. Kay, ARS, Kimberly, ID; B.D. Brown, UI, Parma, ID; R.G. Stevens, WSU, Prosser, WA
  
  
• "Influence of Manure Phytic Acid on Phosphorus Solubility in Soil" by April B. Leytem, Benjamin L. Turner, and Victor Raboy, USDA-ARS
  
  
• "Horse Preference for Afternoon- or Morning-Cut Alfalfa-Grass Hay" by L.C. MacKay¹, H.F. Mayland², W.P. MacKay³, J.C. Burns⁴, and R.E. Whitchurch⁵. ¹New Mexico State University, Las Cruces, NM; ²USDA-ARS, Kimberly, ID; ³University of Texas, El Paso, TX; ⁴USDA-ARS, Raleigh, NC; ⁵North West Labs, Jerome, ID;
  
  
• "Energy Levels in Orchardgrass Swards During Defoliation Sequences Initiated in Morning and Evening" by T.C. Griggs¹, J.W. MacAdam¹, H.F. Mayland², and J.C. Burns³. ¹Utah State University, Logan, UT; ²USDA-ARS, Kimberly, ID; and ³USDA-ARS, North Carolina State University, Raleigh, NC
  
  
• "Total nonstructural carbohydrate in tall fescue leaves and pseudostems after light and dark exposure" by H.F. Mayland¹, J.W. MacAdam², R.J. Orr³, A.J. Rook³, G.E. Shewmaker⁴, P.A. Harrison⁵. ¹USDA-ARS, Kimberly, ID; ²Utah State University, Logan, UT; ³IGER, North Wyke, Okehampton, Devon, UK; ⁴University of Idaho, Twin Falls, ID; and ⁵USDA-ARS, Logan, UT

• "Horse preference for afternoon- or morning-cut alfalfa-grass hay" by L.C. MacKay¹, H.F. Mayland², and W.P. MacKay³; ¹Franklin High School, El Paso, TX, 79912; ²USDA-ARS, Kimberly, ID, 83341; ³University of Texas, El Paso, TX, 79968
  
  
• "Orchardgrass Soluble Carbohydrate and Digestibility Levels in Sward Horizons under Sequences of Successive Defoliation Initiated in Morning and Evening" by T. C. Griggs, J. W. MacAdam, and S. Buffler, Utah State University, Logan, UT, H. F. Mayland, and J.C. Burns, USDA-ARS, Kimberly, ID, Raleigh, NC

• "Soil Properties Affecting P Availabilities in Western Soils" by D.T. Westermann, and A.B. Leytem, USDA-ARS, Kimberly, ID

2002 ASA Meeting at Indianapolis, Indiana

• "Factors Affecting Phosphorus Release From Western Soils" by D.T. Westermann, B.L. Turner, and D.L. Bjorneberg

• "Organic Phosphorus Composition and Potential Bioavailability in Irrigated Arable Soils of the Western US" by Benjamin L. Turner¹, Barbara J. Cade-Menun², Dale T. Westermann¹; ¹USDA-ARS, Northwest Irrigation and Soils Research Laboratory, Kimberly, ID, USA; ²Department of Geological and Environmental Science, Stanford University, CA, USA

• "The Diurnal Cycling of Carbohydrates in Pasture: The Australian Experience" by T.A. Ciavarella, K.F. Smith, M.A. Sprague; Department of Natural Resources and Environment, Pastoral and Veterinary Institute, Victoria, Australia, and H.F. Mayland*; USDA-ARS Kimberly, Idaho, USA

• "Diurnal Cycling of Total Nonstructural Carbohydrates in Leafy Vegetables" by H.F. Mayland, D.L. Bjorneberg and J.C. Burns, USDA-ARS, Kimberly, ID and Raleigh, NC

• "Use of PAM to Control Erosion From Raised Beds Under Sprinkler Irrigation" by D.J. Horne¹, R.E. Sojka², D.L. Bjorneberg² and J.A. Foerster²; ¹Massey University, New Zealand, ²USDA-ARS, Kimberly, ID

• "Polyacrylamide Removes Microorganisms and Nutrients from Surface Water" by J.A. Entry¹, R.E. Sojka¹, S.A. Verwey¹ and C.W. Ross²; ¹USDA Agricultural Research Service, Northwest Irrigation and Soils Research Laboratory, Kimberly, Idaho, ²Landcare Research, Massey University, Palmerson North, New Zealand

• "Scanning Electron Micrographs of Polyacrylamide-Treated Soil in Irrigation Furrows" by C.W. Ross¹, R.E. Sojka² and J.A. Foerster²; ¹Manaaki Whenua, Landcare Research, New Zealand Limited, Palmerston North, New Zealand, ²USDA Agricultural Research Service, Northwest Irrigation and Soils Research Laboratory, Kimberly, Idaho

• "Irrigated Agriculture Decreases Soil Microbial Genetic Diversity" by J.A. Entry¹, D.K. Mills², K. Mathee², K. Jayachndran² and R.E. Sojka¹; ¹USDA Agricultural Research Service, Northwest Irrigation and Soils Research Laboratory, Kimberly, Idaho; ²Department of Biological Sciences & Department of Environmental Studies Florida International University, Miami, FL

• "Phosphorus Release Kinetics as Affected by Aqueous Solutions" by D.T. Westermann, B.L. Turner, D.L. Bjorneberg and J.K. Aase

• "Nutrient Losses in Surface Irrigation Runoff" by D.L. Bjorneberg, D.T. Westermann and J.K. Aase

• "Sheep Sensibility to Differences in Afternoon and Morning-Cut Oaten Hays" by H.F. Mayland* USDA-ARS, 3793 N. 3600 E., Kimberly, Idaho 83341, U.S.A. and T.A. Ciavarella, K.F. Smith, and G.A. Kearney; Agriculture Victoria, Pastoral and Veterinary Institute, P.B. 105, Hamilton, Vic.3300,  Australia

• "Runoff Weed Seed, Sediment, Infiltration and Weed Establishment as Affected by PAM in Furrow-Irrigated Corn" by R.E. Sojka, D.W. Morishita, J.A. Foerster and M.J. Wille

• "Benefits for Adopting Afternoon Forage-Cutting Strategies" by H.F. Mayland, J.C. Burns, D.S. Fisher, R. Carlstrom, S.D. Cash, G.E. Shewmaker and G.A. Ledbetter

• "Phosphorus Runoff Losses Under Simulated Sprinkler Irrigations" by J.K. Aase, D.T. Westermann, and D.L. Bjorneberg

• "The Instantaneous Wetting Effect on Erosion From Irrigated Furrows" by R. E. Sojka, D. L. Bjorneberg, and J. K. Aase

• "Soil Phosphorus (P) Effects on P Losses During Furrow Irigation" by D. T. Westermann, D. L. Bjorneberg, J. K. Aase, and C. W. Robbins