People : Sojka, R.E.

Sojka, R.E. and Mayland, H.F. and Gbur, E.E. (1992) ASA member experiences and perceptions of the peer reviewing-editing process (Chapter 4). pp. 35-53. In: Mayland, H.F. and Sojka, R.E. (eds.) Proc. Symp. ASA Annual Meeting. Research Ethics, Manuscript Review and Journal Quality. USA-TX-San Antonio, 1990/10/23. ASA, Madison, WI.

Sojka, R.E. and Scott, H.D. (2002) Aeration measurement. In: Lal, R., (ed.) Encyclopedia of Soil Science (1st Edition). pp. 27-29. Marcel Dekker, Inc., New York.

Horne, D.J. and Sojka, R.E. (2002) Aeration, tillage effects on. In: Lal, R., (ed.) Encyclopedia of Soil Science (1st Edition). pp. 30-33. Marcel Dekker, Inc., New York.

Koehn, A.C. and Lehrsch, G.A. and Busscher, W.J. and Evans, D.E. and King, B.A. and Stieneke, D.L. and Sojka, R.E. (2014) Aggregate tensile strength and friability characteristics of furrow and sprinkler irrigated fields in Southern Idaho. Communications in Soil Science and Plant Analysis. 45(20):2712-2720.

Sojka, R.E. and Busscher, W.J. (1991) Alternative intensive cropping with corn. pp. 87-90. In: Keisling, T.C. (ed.) Southern Conservation Tillage Conf. Proc. USA-AR-North Little Rock (University of Arkansas), 1991/06/18-20.

Sojka, R.E. and Busscher, W.J. (1991) Alternative intensive cropping with corn. Arkansas Ag. Exp. Sta. Special Report No. 148. University of Arkansas.

Lentz, R.D. and Stieber, T.D. and Sojka, R.E. (1995) Applying Polyacrylamide (PAM) to Reduce Erosion and Increase Infiltration Under Furrow Irrigation. pp. 79-92. In: Robertson, L.D. and al, et (eds.) Proc. Winter Commodity School - 1995. 1995. Univ. ID Coop. Ext., Moscow, ID.

Lentz, R.D. and Sojka, R.E. (2000) Applying polymers to irrigation water: evaluating strategies for furrow erosion control. Transactions of the ASAE. 43(6):1561-1568.

Lentz, R.D. and Sojka, R.E. (1994) Automated Imhoff cone calibration and soil loss/infiltration analysis for furrow irrigation studies. pp. 858-863. In: Watson, G. and Zazueta, F.S. and Harrison, T.V. (eds.) Proc. Computers in Agriculture 1994. USA-FL-Orlando, 1994/02/05-09. ASAE, 2950 Niles Rd., St. Joseph, MI 49085-9659.

Orts, W.J. and Sojka, R.E. and Glenn, G.M. and Gross, R.A. (2001) Biopolymer additives for the reduction of soil erosion losses during irrigation. pp. 102-116. In: Gross, R.A. and Scholz, C. (eds.) Biopolymers from Polysaccharides and Agroproteins. ACS Symposium 786. American Chemical Society. USA-DC-Washington, 2001.

Sojka, R.E. and Karlen, D.L. and Scott, H.D. (1989) Bragg soybeans grown on a Southern Coastal Plain soil. IV. Seasonal changes in nodal N and P concentrations. Journal of Plant Nutrition. 12(9):939-972.

Entry, J.A. and Sojka, R.E. and Hicks, B.J. (2008) Carbon and nitrogen stable isotope ratios can estimate anionic polyacrylamide degradation in soil. Geoderma. 145:8-16.

Shewmaker, G.E. and Entry, J.A. and Sojka, R.E. (2005) Carbon sequestration in irrigated pastures. p. 594. In: O'Mara, F.P. and al, et (eds.) Proceedings of the XX International Grassland Congress. Ireland-Dublin, 2005/06/26-07/01.

Sojka, R.E. and Upchurch, D.R. (1999) Challenges for identifying best management practices--integrating emerging modern technologies and philosophies. In: Currie, L.D. and Hedley, M.J. and Horne, D.J. and Loganathan, P., (eds.) Best soil management practices for production. Occasional report, No. 12. pp. 11-25. Fertilizer and Lime Research Centre, Palmerston North, New Zealand (Massey University).

Sojka, R.E. and Sadler, E.J. and Camp, C.R. and Arnold, F.B. (1987) Comparison of Campbell-leaf press with standard plant water stress measurements for four species. pp. 39-45. In: Proc. of Int. Conf. on Meas. of Soil & Plant Water Status, Vol. 2. 1987.

Busscher, W.J. and Sojka, R.E. (1990) Comparison of log transformed and scaled cone indices. Soil & Tillage Research. 15:329-336.

Entry, J.A. and Strausbaugh, C.A. and Sojka, R.E. (2005) Compost amendments decrease Verticilliuam dahliae infection in potato. Compost Science & Utilization. 13(1):43-49.

Entry, J.A. and Strausbaugh, C.A. and Sojka, R.E. (2004) Compost amendments in a wood-chip + polyacrylamide medium decreased Verticillium dahliae infection on potato. pp. 19-24. In: Ellsworth, J.W. (ed.) Proc. Idaho Nutrient Management Conference. USA-ID-Twin Falls, 2004/03/11.

Sojka, R.E. and Busscher, W.J. (1989) Conservation tillage in soybean and corn in the South Carolina Coastal Plain. pp. 46-48. In: Proc. of Southern Conservation Tillage Conference. USA-FL-Talahassee, 1989.

Sojka, R.E. and Busscher, W.J. (1989) Conservation tillage in soybean and corn in the South Carolina Coastal Plain. Special Bulletin No. 89-1. Integrated Pest Management. pp. 46-48.

Carter, D.L. and Westermann, D.T. and Sojka, R.E. and Meek, B.D. and Wright, J.L. and Brown, M.J. and Lehrsch, G.A. (1995) Controlling nitrate leaching and erosion on irrigated land. pp. 27-30. In: Proc. Clean Water--Clean Environment--21st Century, Team Agriculture--Working to protect Water Resources. Vol. II: Nutrients. USA-MO-Kansas City, 1995/03/05-08. USDA and ASAE, St. Joseph, MI.

Busscher, W.J. and Bauer, P.J. and Camp, C.R. and Sojka, R.E. (1997) Correction of cone index for soil water content differences in a coastal plain soil. Soil & Tillage Research. 43:205-217.

Sojka, R.E. and Lentz, R.D. (1995) Decreasing sedimentation loss from surface irrigation into Riparian areas. pp. 62-68. In: Proc. Northwest Regional Riparian Symposia. USA-ID-Boise, 1994/12/08-09.

Sojka, R.E. and Westermann, D.T. and Brown, M.J. and Kincaid, D.C. and Meek, B.D. and McCann, I. and Halderson, J. and Thornton, M. (1991) Deep tillage effects on potato yield and quality. pp. 129-140. In: Proc. 30th Annual Wash. State Potato Conf. & Trade Fair. USA-WA-Moses Lake, 1991/02/05-07. Wash. State Potato Commission, Moses Lake, WA 98837.

Letey, J. and Sojka, R.E. and Upchurch, D.R. and Cassel, D.K. and Olson, K.R. and Payne, W.A. and Petrie, S.E. and Price, G.H. and Reginato, R.J. and Scott, H.D. and Smethurst, P.J. and Triplett, G.B. (2003) Deficiencies in the soil quality concept and its application. Journal of Soil and Water Conservation. 58(4):180-187.

Sojka, R.E. and Mayland, H.F. (1993) Driving science with one eye on the peer review mirror. pp. 203-206. In: Forum proceedings, "Ethics, Values, and the Promise of Science". USA-CA-San Francisco, 1993/02/25-26. Sigma Xi, The Scientific Research Society, Research Triangle Park, NC.

Sojka, R.E. and Arnold, F.B. and Morrison III, W.H. and Busscher, W.J. (1988) Effect of early and late planting on sunflower performance in the southeastern United States. Applied Agricultural Research. 4(1):37-46.

Bjorneberg, D.L. and Sojka, R.E. (2008) Effects of a new polysaccharide-based amendment on furrow irrigation infiltration and erosion. Transaction of the ASAE. 51(2):529-534. 1 March 2008.

Lehrsch, G.A. and Sojka, R.E. and Carter, D.L. and Jolley, P.M. (1990) Effects of freezing on aggregate stability of soils differing in texture, mineralogy, and organic matter content. pp. 61-69. In: Cooley, K.R. (ed.) Proc. Int. Symp. Frozen soil impacts on agricultural range, and forest lands. USA-WA-Spokane, 1990/03/21-22.

Lehrsch, G.A. and Sojka, R.E. and Carter, D.L. and Jolley, P.M. (1990) Effects of freezing on aggregate stability of soils differing in texture, mineralogy, and organic matter content. CRREL Special Report No. 90-1. US Army Cold Regions Res. and Engr. Lab, Hanover, NH. pp. 61-69.

Busscher, W.J. and Sojka, R.E. (1987) Enhancement of subsoiling effect on soil strength by conservation tillage. Transaction of the ASAE. 30(4):888-892.

Sojka, R.E. and Kennedy-Ketcheson, E.C. and Brown, M.J. and Westermann, D.T. (1991) Erosion and infiltration of furrow irrigated potato fields as affected by zone subsoiling. pp. 301-315. In: Proc. Intl. Erosion Control Assoc. Erosion Control:A global perspective. USA-FL-Orlando, 1991/02/20-22. Intl Erosion Control Assoc., P.O. Box 4904, Steamboat Springs, CO 80477.

Sojka, R.E. and Bjorneberg, D.L. (2002) Erosion, controlling irrigation-induced. In: Lal, R., (ed.) Encyclopedia of Soil Science (1st Edition). pp. 411-414. Marcel Dekker, Inc., New York.

Lehrsch, G.A. and Bjorneberg, D.L. and Sojka, R.E. (2005) Erosion: Irrigation-induced. In: Hillel, D., (ed.) Encyclopedia of Soils in the Environment. pp. 456-463. Elsevier, Ltd, Oxford, U.K.

Lehrsch, G.A. and Lentz, R.D. and Bjorneberg, D.L. and Sojka, R.E. (2014) Erosion: Irrigation-induced. In: Reference module in Earth Systems and Environmental Sciences (Online database). pp. 1-11. Elsevier, Oxford, U.K. Available: http://dx.doi.org/10.1016/B978-0-12-409548-9.09019...

Lentz, R.D. and Sojka, R.E. and Foerster, J.A. (1996) Estimating polyacrylamide concentration in irrigation water. Journal of Environment Quality. 25:1015-1024.

Sojka, R.E. and Moon, H.W. (1992) Ethical issues of concern in the USDA-ARS (Chapter 3). pp. 25-33. In: Kral, David M. (ed.) Proc. Symp. ASA Annual Meeting. Research Ethics, Manuscript Review and Journal Quality. USA-TX-San Antonio, 1990/10/23. ASA, Madison, WI.

Bjorneberg, D.L. and Trout, T.J. and Sojka, R.E. and Aase, J.K. (1999) Evaluating WEPP-predicted infiltration, runoff, and soil erosion for furrow irrigation. Transactions of the ASAE. 42(6):1733-1741.

Camp, C.R. and Sadler, E.J. and Busscher, W.J. and Sojka, R.E. and Karlen, D.L. (1995) Experiences with microirrigation for agronomic crops in the southeastern USA. pp. 638-644. In: Proc. of the Fifth International Microirrigation Congress. USA-FL-Orlando, 1995/04/02-06.

Barvenik, F.W. and Sojka, R.E. and Lentz, R.D. and Andrawes, F.F. and Messner, L.S. (1996) Fate of acrylamide monomer following application of polyacrylamide to cropland. In: Sojka, R.E. and Lentz, R.D. (eds.) Managing irrigation-induced erosion and infiltration with polyacrylamide. University of Idaho Miscellaneous Publication No. 101-96. pp. 103-110.

Lentz, R.D. and Sojka, R.E. (1994) Field results using polyacrylamide to manage furrow erosion and infiltration. Soil Science. 158(4):274-282.

Lentz, R.D. and Sojka, R.E. (1996) Five-year research summary using PAM in furrow irrigation. In: Sojka, R.E. and Lentz, R.D. (eds.) Managing irrigation-induced erosion and infiltration with polyacrylamide. University of Idaho Miscellaneous Publication No. 101-96. pp. 20-27.

Lehrsch, G.A. and Sojka, R.E. and Carter, D.L. and Jolley, P.M. (1991) Freezing effects on aggregate stability affected by texture, mineralogy, and organic matter. Soil Science Society of America Journal. 55:1401-1406.

Lehrsch, G.A. and Sojka, R.E. and Jolley, P.M. (1993) Freezing effects on aggregate stability of soils amended with lime and gypsum. In: Poesen, J.W.A. and Nearing, M.A., (eds.) Soil Surface Sealing and Crusting. Catena Supplement, No. 24. pp. 115-127. Catena Verlag, Germany. ISBN 3-923381-33-6

Lehrsch, Gary A. and Sojka, R.E. and Westermann, D.T. (2001) Furrow irrigation and N management strategies to protect water quality. Communications in Soil Science and Plant Analysis. 32(7&8):1029-1050.

Lentz, R.D. and Sojka, R.E. and Carter, D.L. (1996) Furrow irrigation water-quality effects on soil loss and infiltration. Soil Science Society of America Journal. 60:238-245.

Sojka, R.E. and Carter, D.L. and Brown, M.J. (1992) Imhoff cone determination of sediment in irrigation runoff. Soil Science Society of America Journal. 56(3):884-890.

Sojka, R.E. and Lentz, R.D. (1994) Improving water quality of return flows in furrow-irrigated systems using polymer-amended inflows. pp. 395-397. In: Proceedings Vol. I SWCS Conference on Agricultural Research to Protect Water Quality. USA-MN-Minneapolis, 1993/02/21-24.

Sojka, R.E. and Busscher, W.J. and Lehrsch, G.A. (2001) In situ strength, bulk density, and water content relationships of a durinodic xeric haplocalcid soil. Soil Science. 166(8):520-529.

Lentz, R.D. and Bautista, Eduardo and Koehn, A.C. and Sojka, R.E. (2020) Infiltration and soil water distribution in irrigation furrows treated with polyacrylamide. Transactions of the ASABE. 63(5):1451-1464. 23 October 2020.

Entry, James A. and Fuhrmann, Jeffry J. and Sojka, R.E. and Shewmaker, Glen A. (2004) Influence of irrigated agriculture on soil carbon and microbial community structure. Environmental Management. 33(Supplement 1):S363-S373.

Entry, J.A. and Mills, D.K. and Mathee, K. and Jayachandran, K. and Sojka, R.E. and Narasimhan, Giri (2008) Influence of irrigated agriculture on soil microbial diversity. Applied Soil Ecology. 40:146-154. 24 July 2008.

Lentz, R.D. and Sojka, R.E. and Carter, D.L. (1994) Influence of irrigation water quality on sediment loss from furrows. pp. 274-278. In: Proc. Conf. Agricultural Research to Protect Water Quality. USA-MN-Minneapolis, 1993/02/21-24.

Sojka, R.E. and Entry, J.A. (2000) Influence of polyacrylamide application to soil on movement of microorganisms in runoff water. Environmental Pollution. 108:405-412.

Lentz, R.D. and Sojka, R.E. and Carter, D.L. (1993) Influence of polymer charge type and density on polyacrylamide ameliorated irrigated furrow erosion. pp. 161-168. In: IECA Proceedings. Preserving Our Environment - The Race Is On. USA-IN-Indianapolis, 1993/02/23-26.

Busscher, W.J. and Sojka, R.E. (1994) Intensive cropping of maize in the Southeastern United States. Soil Technology. 7:197-208.

Mills, DeEtta and Entry, James A. and Mathee, Kalai and Narasimhan, Giri and Jayachandran, Kris and Sojka, R.E. and Busscher, Warren J. (2003) Irrigated agriculture and tillage practices impact microbial community structure. pp. 749-754. In: Proceedings 16th Triennial Conf. of ISTRO: Soil Management for Sustainability. Australia-Brisbane, 2003/07/13-18.

Sojka, R.E. and Lentz, R.D. and Shainberg, I. and Trout, T.J. and Ross, C.W. and Robbins, C.W. and Entry, J.A. and Aase, J.K. and Bjorneberg, D.L. and Orts, W.J. and Westermann, D.T. and Morishita, D.W. and Watwood, M.E. and Spofford, T.L. and Barvenik, F.W. (2000) Irrigating with polyacrylamide (PAM) - Nine years and a million acres of experience. pp. 161-169. In: Proc. of 4th Decennial National Irrigation Symposium. USA-AZ-Phoenix, 2000/11/14-16. ASAE, St. Joseph, MI.

Sojka, R.E. (1996) Irrigation. In: McGraw Hill Yearbook of Science & Technology - 1997. pp. 258-259. McGraw-Hill Inc., New York.

Bjorneberg, D.L. and Sojka, R.E. (2002) Irrigation erosion. In: Lal, R., (ed.) Encyclopedia of Soil Science (1st Edition). pp. 742-744. Marcel Dekker, Inc., New York.

Entry, James A. and Sojka, R.E. and Shewmaker, Glenn E. (2003) Irrigation increases carbon in agricultural soils. pp. 391-395. In: Proceedings 16th Triennial Conf. of ISTRO: Soil Management for Sustainability. Australia-Brisbane, 2003/07/13-18.

Entry, James A. and Sojka, R.E. and Shewmaker, Glenn E. (2004) Irrigation increases inorganic carbon in agricultural soils. Environmental Management. 33(Supplement 1):S309-S317.

Camp, C.R. and Robbins, M.L. and Karlen, D.L. and Sojka, R.E. (1992) Irrigation management for double-cropped fresh-market tomatoes on a high-water-table soil. Transactions of the ASAE. 34(6):2445-2452.

Bjorneberg, D.L. and Sojka, R.E. (2005) Irrigation methods. In: Hillel, D., (ed.) Encyclopedia of Soils in the Environment. pp. 273-280. Elsevier, Ltd, Oxford, U.K.

Sojka, R.E. and Bjorneberg, D.L. and Strelkoff, T. (2007) Irrigation-induced erosion. In: Agronomy Monograph, No. 30. pp. 237-275. American Society of Agronomy.

Trout, T.J. and Carter, D.L. and Sojka, R.E. (1994) Irrigation-induced erosion reduces yields and muddies rivers. Irrigation Journal. 44(1):8-12.

Sojka, R.E. and Bjorneberg, D.L. and Entry, J.A. (2002) Irrigation: An historical perspective. In: Lal, R., (ed.) Encyclopedia of Soil Science (1st Edition). pp. 745-749. Marcel Dekker, Inc., New York.

Lentz, R.D. and Sojka, R.E. (2009) Long-term polyacrylamide formulation effects on soil erosion, water infiltration, and yields of furrow-irrigated crops. Agronomy Journal. 101(2):305-314. 9 March 2009.

Sojka, R.E. and Entry, J.A. and Shewmaker, G.E. and Fuhrmann, J.J. (2007) Management of irrigated agriculture to increase carbon storage. pp. 189-202. In: Currie, L.D. and Yates, L.J. (eds.) Proceedings of the Fertilizer & Lime Research Centre Workshop. Designing Sustainable Farms: Critical Aspects of Soil and Water Management. New Zealand-Palmerston North, 2007/02/08-09.

Entry, James A. and Sojka, R.E. and Shewmaker, Glenn E. (2002) Management of irrigated agriculture to increase organic carbon storage in soils. Soil Science Society of America Journal. 66:1957-1964.

Entry, J.A. and Sojka, R.E. and Shewmaker, G.E. (2007) Management of irrigated agriculture to increase organic carbon storage in soils. In: Plattenberg, R.H., (ed.) Environmental Pollution: New Research. pp. 121-139. Nova Science Publishers, New York, NY.

Sojka, R.E. (1996) Management options for control of irrigation-induced erosion. Proceedings of the Winter Commodity Schools. 28:95-103.

Sojka, R.E. and Sanchez, P. (2004) Managing soil quality: Challenges in modern agriculture. Soil Science. 169(12):884-886.

Entry, J.A. and Sojka, R.E. (2007) Matrix based fertilizers reduce nitrogen and phosphorus leaching in greenhouse column studies. Water Air and Soil Pollution. 180:283-292.

Entry, J.A. and Sojka, R.E. (2008) Matrix based fertilizers reduce nitrogen and phosphorus leaching in three soils. Journal of Environmental Management. 87:364-372. Elsevier. Available: http://www.elsevier.com/locate/jenvman

Entry, J.A. and Sojka, R.E. (2010) Matrix-based fertilizers reduce nutrient leaching while maintaining Kentucky bluegrass growth. Water, Air, & Soil Pollution. 207:181-193.

Sojka, R.E. and Entry, J.A. (2007) Matrix-based fertilizers: A new fertilizer formulation concept to reduce nutrient leaching. pp. 67-85. In: Currie, L.D. and Yates, L.J. (eds.) Proceedings of the Fertilizer & Lime Research Centre Workshop. Designing Sustainable Farms: Critical Aspects of Soil and Water Management. New Zealand-Palmerston North, 2007/02/08-09.

Sojka, R.E. and Stolzy, L.H. (1988) Mineral nutrition of oxygen stressed crops and its relationship to some physiological responses. In: Hook, D.D. and al, et, (eds.) Ecology of Wetlands. Ecology and Management of Wetlands, Vol. I. pp. 429-440. Croom Helm Ltd, Kent, UK,.

Sojka, R.E. and Stolzy, L.H. (1988) Mineral nutrition of oxygen-stressed crops and its relationship to some physiological responses (Chapter 35). In: Hook, D.D. and McKee Jr, W.H. and Smith, H.K. and Gregory, J. and Burrell Jr, V.G. and DeVoe, M.R. and Sojka, R.E. and Gilbert, S. and Banks, R. and Stolzy, L.H. and Brooks, C. and Matthews, T.D. and Shear, T.H., (eds.) Ecology of Wetlands. The Ecology and Management of Wetlands, Vol. I. 592 pp. Croom Helm Ltd., Kent, UK,.

Lentz, R.D. and Sojka, R.E. (1995) Monitoring software for pollutant components in furrow irrigation runoff. pp. 123-127. In: Ahuja., L. and Leppert, J. and Rojas, K. and Seely, E. (eds.) Proc. Workshop on Computer Applications in Water Management. 1995/05/23-25.

Lentz, R.D. and Sojka, R.E. (1995) Monitoring software for pollutant components in furrow irrigation runoff. Colorado State University Water Resources Research Institute Information Series No. 79.

Sadler, E.J. and Karlen, D.L. and Sojka, R.E. and Scott, H.D. (1991) Morphological, temporal, and nodal accumulation of nutrients by determinate soybean. Journal of Plant Nutrition. 14(8):775-807.

Sojka, R.E. and Lentz, R.D. (1995) Net Infiltration and Soil Erosion Effects of a Few PPM Polyacrylamide in Furrow Irrigation Water. pp. 349-354. In: So, H.B. and Smith, G.D. and Raine, S.R. and Schafer, B.M. and Loch, R.J. (eds.) Proc. 2nd Intl. Symposium on Sealing, Crusting and Hardsetting Soils: Productivity and Conservation. Australia-Brisbane (University of Queensland), 1994/02/07-11. Australian Society of Soil Science Inc. (Queensland Branch).

Sojka, R.E. and Lentz, R.D. and Ross, C.W. and Trout, T.J. (1996) Net and Tension infiltration effects of PAM in furrow irrigation. In: Sojka, R.E. and Lentz, R.D. (eds.) Managing irrigation-induced erosion and infiltration with polyacrylamide. University of Idaho Miscellaneous Publication No. 101-96. pp. 97-102.

Lehrsch, Gary A. and Sojka, R.E. and Westermann, D.T. (2000) Nitrogen placement, row spacing, and furrow irrigation water positioning effects on corn yield. Agronomy Journal. 92:1266-1275.

Lehrsch, G.A. and Kincaid, D.C. and Lentz, R.D. (1996) PAM Spray effects on sugarbeet emergence. In: Sojka, R.E. and Lentz, R.D. (eds.) Managing irrigation-induced erosion and infiltration with polyacrylamide. University of Idaho Miscellaneous Publication No. 101-96. pp. 115-118.

Lentz, R.D. and Sojka, R.E. (1996) PAM conformation effects on furrow erosion mitigation efficacy. In: Sojka, R.E. and Lentz, R.D. (eds.) Managing irrigation-induced erosion and infiltration with polyacrylamide. University of Idaho Miscellaneous Publication No. 101-96. pp. 71-77.

Sojka, R.E. and Lentz, R.D. (1996) A PAM primer: A brief history of PAM and PAM-related issues. In: Sojka, R.E. and Lentz, R.D. (eds.) Managing irrigation-induced erosion and infiltration with polyacrylamide. University of Idaho Miscellaneous Publication No. 101-96. pp. 11-20.

Sojka, R.E. and Busscher, W.J. (1988) Penetration resistance isopleths for assessment of soil strength under varying management regimes. pp. 129-134. In: Proc. 11th Int'l. Conf. Int'l Soil Tillage Res. Organ. Scotland-Edinburg, 1988/07/11-15.

Sojka, R.E. (1999) Physical aspects of soils of disturbed ground (Chapter 21). In: Ecosystems of Disturbed Ground. Ecosystems of the World, No. 16. pp. 503-519.

Sojka, R.E. and Karlen, D.L. and Sadler, E.J. (1988) Planting geometries and the efficient use of water and nutrients. In: Proc. SSSA, CSSA, ASA. USA-GA-Atlanta, 1987/11/30-12/01.

Sojka, R.E. and Karlen, D.L. and Sadler, E.J. (1988) Planting geometries and the efficient use of water and nutrients. ASA Special Pub No. 51. pp. 43-69.

Sojka, R.E. and Lentz, R.D. and Bjorneberg, D.L. and Aase, J.K. and Entry, J. and Morishita, D. and Ross, C.W. and Trout, T. (1999) Polyacrylamide (PAM) - A one million acre progress report. pp. 85-92. In: 1999 Proc. International Irrigation Show. USA-FL-Orlando, 1999/11/07-09.

Sojka, R.E. and Lentz, R.D. and Entry, J.A. and Bjorneberg, D.L. and Morishita, D. (2007) Polyacrylamide (PAM) for irrigation runoff management. pp. 436-450. In: Proceedings of the International Conference on the Future of Agriculture, Science, Stewardship and Sustainability. USA-CA-Sacramento, 2006/08/07-09.

Entry, James A. and Phillips, Ian and Stratton, Helen and Sojka, R.E. (2003) Polyacrylamide + aluminum sulfate and polyacrylamide + calcium oxide remove coliform bacteria and nutrients from swine wastewater. Environmental Pollution. 121:453-462.

Trout, T.J. and Sojka, R.E. and Lentz, R.D. (1995) Polyacrylamide Effect on Furrow Erosion and Infiltration. Transactions of the ASAE. 38(3):761-765.

Lentz, R.D. and Sojka, R.E. (1996) Polyacrylamide application to control furrow irrigation-induced erosion. pp. 419-430. In: IECA Proceedings. Erosion Control Technology … Bringing it Home. USA-WA-Seattle, 1996/02/27-03/01.

Entry, James A. and Sojka, R.E. (1999) Polyacrylamide application to soil reduces the movement of microorganisms in water. pp. 93-99. In: 1999 Proc. International Irrigation Show. USA-FL-Orlando, 1999/11/07-09.

Ross, C.W. and Sojka, R.E. and Lentz, R.D. (1996) Polyacrylamide as a tool for controlling sediment runoff and improving infiltration under furrow irrigation. In: Proc. Soil Science - Raising the Profile. Australia-Melbourne (University of Melbourne), 1996/07/01-04. 2 pp.

Sojka, R.E. and Lentz, R.D. and Ross, C.W. and Trout, T.J. and Bjorneberg, D.L. and Aase, J.K. (1998) Polyacrylamide effects on infiltration in irrigated agriculture. Journal of Soil and Water Conservation. 53(4):325-331.

Spackman, R. and Entry, J.A. and Sojka, R.E. and Ellsworth, J.W. (2003) Polyacrylamide for coliform bacteria removal from agricultural wastewater. Journal of Soil and Water Conservation. 58(5):276-283.

Sojka, R.E. and Bjorneberg, D.L. and Entry, J.A. and Lentz, R.D. and Orts, W.J. (2007) Polyacrylamide in agriculture and environmental land management. Advances in Agronomy. 92:75-162.

Sojka, R.E. and Lentz, R.D. (1996) Polyacrylamide in furrow irrigation, an erosion control breakthrough. pp. 183-189. In: First European Conf. and Trade Exposition on Erosion Control. Lecture Book IECA. Spain-Barcelona, 1996/05/29-31.

Entry, James A. and Sojka, R.E. and Watwood, Maribeth and Ross, Craig (2002) Polyacrylamide preparations for protection of water quality threatened by agricultural runoff contaminants. Environmental Pollution. 120:191-200.

Lentz, R.D. and Sojka, R.E. and Ross, C.W. (2000) Polymer charge and molecular weight effects on treated irrigation furrow processes. International Journal of Sediment Research. 15(1):17-30.

Sojka, R.E. and Surapaneni, A. (2000) Potential use of polyacrylamide (PAM) in Australian agriculture to improve off and on-site environmental impacts and infiltration management. In: Polyacrylamides in Irrigated Agriculture. Report of Project, No. UNE39. pp. 1-37. Land & Water Resources Research and Development Corporation (LWRRDC) NPIRD Travel Fellowship.

Bjorneberg, D.L. and Sojka, R.E. and Aase, J.K. (2002) Pre-wetting effect on furrow irrigation erosion: A field study. Transactions of the ASAE. 45(3):717-722.

Lentz, R.D. and Shainberg, I. and Sojka, R.E. and Carter, D.L. (1992) Preventing irrigation furrow erosion with small applications of polymers. Soil Science Society of America Journal. 56:1926-1932.

Sojka, R.E. and Upchurch, D.R. and Borlaug, N.E. (2003) Quality soil management or soil quality management: Performance versus semantics. Advances in Agronomy. 79:1-68.

Brown, M.J. and Sojka, R.E. (1991) Reducing erosion and sediment loss from furrow irrigated slopes. pp. 316-323. In: Proc. Intl. Erosion Control Assoc. Erosion Control: A global perspective. USA-FL-Orlando, 1991/02/20-22. Intl Erosion Control Assoc., P.O. Box 4904, Steamboat Springs, CO 80477.

Sojka, R.E. and Brown, M.J. and Kennedy-Ketcheson, E.C. (1992) Reducing erosion from surface irrigation by furrow spacing and plant position. Agronomy Journal. 84:668-675.

Sojka, R.E. and Lentz, R.D. (1997) Reducing furrow irrigation erosion with polyacrylamide (PAM). Journal of Production Agriculture. 10(1):1-51.

Lentz, R.D. and Sojka, R.E. and Robbins, C.W. (1998) Reducing phosphorus losses from surface-irrigated fields: emerging polyacrylamide technology. Journal of Environment Quality. 27:305-312.

Lentz, R.D. and Sojka, R.E. and Robbins, C.W. (1998) Reducing soil and nutrient losses from furrow irrigated fields with polymer applications. In: Blume, H.P. and Eger, H. and Fleischhauer, E. and Hebel, A. and Reij, C. and Steiner, K.G., (eds.) Towards Sustainable Land Use. Advances in GeoEcology, No. 31. pp. 1233-1238. Catena Verlag, Reiskirchen.

Ippolito, J.A. and Spackman, R. and Entry, J.A. and Sojka, R.E. (2014) Removal of vegtative clippings reduces dissolved phosphorus loss in runoff. Communications in Soil Science and Plant Analysis. 45(11):1555-1564.

Mayland, H.F. and Sojka, R.E., eds. (1992) Research Ethics, Manuscript Review and Journal Quality. In: Proc. Symp. ASA Annual Meeting. USA-TX-San Antonio, 1990/10/23. American Society of Agronomy, Crop Science Society America, and Soil Science Society America, Madison, WI.

Sojka, R.E. (1997) Research contribution to the understanding and management of irrigation-induced erosion. In: Pierce, F.J. and Frye, W.W., (eds.) Fifty Years of Soil and Water Conservation in the United States. Soil and Water Conserv. Soc. Amer. Ankeny, IA. Available: http://www.swcs.org/Online50/chapt2/chapt2.html

Sojka, R.E. and Upchurch, D.R. (1999) Reservations regarding the soil quality concept. Soil Science Society of America Journal. 63:1039-1054.

Sojka, R.E. (1988) A Review. Measurement of root porosity (volume of root air space). Environmental & Experimental Botany. 28(4):275-280.

Sojka, R.E. and Oosterhuis, D.M. and Scott, H.D. (2005) Root oxygen deprivation and the reduction of leaf stomatal aperture and gas exchange. In: Pessarakli, M., (ed.) Handbook of Photosynthesis (2nd Edition). pp. 299-314. Taylor & Francis, New York, NY.

Ross, C.W. and Sojka, R.E. and Foerster, J.A. (2003) Scanning electron micrographs of polyacrylamide-treated soil in irrigation furrows. Journal of Soil and Water Conservation. 58(5):327-331.

Sojka, R.E. and Bauer, A. (1988) Screening for drought resistance in cereals: A soil science perspective. Plant Genetics and Breeding Review. 1(1):55-63.

Brown, M.J. and Carter, D.L. and Lehrsch, G.A. and Sojka, R.E. (1995) Seasonal trends in furrow irrigation erosion in southern Idaho. Soil Technology. 8:119-126.

Mayland, H.F. and Wright, J.L. and Sojka, R.E. (1991) Silicon accumulation and water uptake by wheat. Plant and Soil. 137(2):191-199.

Sojka, R.E. and Lentz, R.D. and Foerster, J.A. (1994) Software utilizing Imhoff cone volumes to estimate furrow-irrigation erosion. Journal of Soil and Water Conservation. 49(4):400-406.

Trout, T.J. and Sojka, R.E. and Okafor, L.I. (1991) Soil Management (Chapter 23). In: Hoffman, G. and Howell, T.A. and Solomon, K.H., (eds.) Management of Farm Irrigation Systems. pp. 873-896. ASAE, St. Joseph, MI.

Sojka, R.E. (1995) Soil Oxygen. In: McGraw-Hill Yearbook of Science & Technology. pp. 373-374. McGraw-Hill Inc., New York.

Busscher, W.J. and Karlen, D.L. and Sojka, R.E. and Burnham, K.P. (1988) Soil and plant response to three subsoiling implements. Soil Science Society of America Journal. 52:804-809.

Sojka, R.E. (1993) Soil compaction. pp. 194-198. In: Proc. Winter Commodity Schools. USA-ID, 1993/01/20.

Sojka, R.E. and Bjorneberg, D.L. (2002) Soil erosion reduction. In: Geller, E. and al, et, (eds.) McGraw-Hill Yearbook of Science & Technology. pp. 310-312. McGraw-Hill Inc., New York.

Sojka, R.E. and Orts, W.J. and Entry, J.A. (2004) Soil physics and hydrology: Conditioners. In: Hillel, D., (ed.) Encyclopedia of Soils in the Environment. pp. 301-306. Elsevier, Ltd, Oxford, U.K.

Campbell, R.B. and Busscher, W.J. and Beale, O.W. and Sojka, R.E. (1988) Soil profile modification and cotton production. pp. 505-509. In: Proc. Beltwide Cotton Prod. Res. Conf. USA-LA-New Orleans, 1988/01/03-08.

Singer, M.J. and Sojka, R.E. (2002) Soil quality. In: Geller, E. and al, et, (eds.) McGraw-Hill Yearbook of Science & Technology. pp. 312-314. McGraw-Hill Inc., New York.

Price, Graham H. and Smethurst, P.J. and Sparrow, L.A. and Sojka, R.E. (2004) Soil quality: to regulate or to manage? pp. 938-942. In: Proc. International Soil Tillage Research Organisation 16th Triennial Conf. Soil Management for Sustainability. Australia-Brisbane, 2003/07/13-18.

Sojka, R.E. and Lehrsch, G.A. and Kostka, S.J. and Reed, J.L. and Koehn, A.C. and Foerster, J.A. (2009) Soil water measurements relevant to agronomic and environmental functions of chemically treated soil. Journal of the ASTM International. 6(1):1-20.

Bjorneberg, D.L. and Aase, J.K. and Sojka, R.E. (2000) Sprinkler irrigation runoff and erosion control with polyacrylamide. pp. 513-522. In: Evans, R.G. and Benham, B.L. and Trooien, T.P. (eds.) National Irrigation Symposium. Proc. 4th Decennial Symp. USA-AZ-Phoenix, 2000/11/14-16. ASAE, St. Joseph, MI.

Sojka, R.E. (1992) Stomatal closure in oxygen-stressed plants. Soil Science. 154:269-280.

Sojka, R.E. (1995) Subsoiling - Agricultural soil and crop practices. In: McGraw-Hill Yearbook of Science & Technology - 1996. pp. 4-6. McGraw-Hill Inc., New York.

Sojka, R.E. and Horne, D.J. and Ross, C.W. and Baker, C.J. (1997) Subsoiling and surface tillage effects on soil physical properties and forage oat stand and yield. Soil & Tillage Research. 40:125-144.

Sojka, R.E. and Busscher, W.J. and Gooden, D.T. and Morrison, W.H. (1990) Subsoiling for sunflower production in the Southeast Coastal Plains. Soil Science Society of America Journal. 54:1107-1112.

Lehrsch, G.A. and Sojka, R.E. and Reed, J.L. and Henderson, R.A. and Kostka, S.J. (2011) Surfactant and irrigation effects on wettable soils: runoff, erosion, and water retention responses. Hydrological Processes. 25:766-777. 28 February 2011.

Lehrsch, G.A. and Sojka, R.E. and Koehn, A.C. (2012) Surfactant effects on soil aggregate tensile strength. Geoderma. 189-190:199-206. 30 August 2012.

Sojka, R.E. and Entry, J.A. and Orts, W.J. and Morishita, D.W. and Ross, C.W. and Horne, D.J. (2003) Synthetic- and Bio-polymer use for runoff water quality management in irrigated agriculture. pp. 3/130-3/136. In: Bruen, M. (ed.) Proceedings of the 7th International Specialised Conference on Diffuse Pollution and Basin Management and 36th Scientific Meeting of the Estuarine and Coastal Sciences Association (ECSA). Ireland-Dublin, 2003/08/17-22.

Sojka, R.E. and Entry, J.A. and Orts, W.J. and Morishita, D.W. and Ross, C.W. and Horne, D.J. (2005) Synthetic- and bio-polymer use for runoff water quality management in irrigation agriculture. Water Science & Technology. 51(3-4):107-115.

Bjorneberg, D.L. and Sojka, R.E. and Leytem, A.B. (2005) Technologies to minimize water quality impacts of irrigated agriculture. In: Proceedings of the World Water and Environmental Resources Congress. USA-AK-Anchorage, 2005/05/15-19.

Westermann, D.T. and Sojka, R.E. (1996) Tillage and nitrogen placement effects on nutrient uptake by potato. Soil Science Society of America Journal. 60:1448-1453.

Sojka, R.E. and Lentz, R.D. (1994) Time for yet another look at soil conditioners. Soil Science. 158:233-234.

Bjorneberg, D.L. and Kincaid, D.C. and Lentz, R.D. and Sojka, R.E. and Trout, T.J. (2000) Unique aspects of modeling irrigation-induced soil erosion. International Journal of Sediment Research. 15(2):245-252.

Orts, W.J. and Roa-Espinosa, A. and Sojka, R.E. and Glenn, G.M. and Iman, S.H. and Erlacher, K. and Pedersen, J.S. (2007) Use of synthetic polymers and biopolymers for soil stabilization in agricultural, construction, and military applications. Journal of Materials in Civil Engineering. 19(1):58-66.

Bjorneberg, D.L. and Santos, F.L. and Castanheira, N.S. and Martins, O.C. and Reis, J.L. and Aase, J.K. and Sojka, R.E. (2003) Using polyacrylamide with sprinkler irrigation to improve infiltration. Journal of Soil and Water Conservation. 58(5):283-289.

Sojka, R.E. and Lentz, R.D. and Westermann, D.T. (1998) Water and erosion management with multiple applications of polyacrylamide in furrow irrigation. Soil Science Society of America Journal. 62:1672-1680.

Sojka, R.E. and Lehrsch, G.A. and Westermann, D.T. (1994) Water or nitrogen placement and leaching from furrow irrigation. pp. 625-628. In: IN: Proc. Conf. Agricultural Research to Protect Water Quality (Vol 2. Poster presentations). USA-MN-Minneapolis, 1993/02/21-24.

Lehrsch, G.A. and Sojka, R.E. (2011) Water quality and surfactant effects on the water repellency of a sandy soil. Journal of Hydrology. 403(1&2):58-65. 1 April 2011.

Sojka, R.E. and Morishita, D.W. and Foerster, J.A. and Wille, M.J. (2003) Weed seed transport and weed establishment as affected by polyacrylamide in furrow-irrigated corn. Journal of Soil and Water Conservation. 58(5):319-326.

Sojka, R.E. and Karlen, D.L. (1989) Winter rapeseed performance in the southeastern Coastal Plain. Journal of Soil and Water Conservation. 43(6):202-205.

Entry, J.A. and Strausbaugh, C.A. and Sojka, R.E. (2000) Wood chip-polyacrylamide medium for biocontrol bacteria decreases Verticillium dahliae infection on potato. Biocontrol Science and Technology. 10:677-686.

Sojka, R.E. and Westermann, D.T. and Brown, M.J. and Meek, B.D. (1993) Zone-subsoiling effects on infiltration, runoff, erosion, and yields of furrow-irrigated potatoes. Soil & Tillage Research. 25:351-368.

Sojka, R.E. and Westermann, D.T. and Kincaid, D.C. and McCann, I.R. and Halderson, J.L. and Thornton, M. (1993) Zone-subsoiling effects on potato yield and grade. American Potato Journal. 70:475-484.

Aase, J.K. and Bjorneberg, D.L. and Sojka, R.E. (2001) Zone-subsoiling relationships to bulk density and cone index on a furrow-irrigated soil. Transactions of the ASAE. 44(3):577-583.

Sojka, R.E. and Sadler, E.J. and Camp, C.R. and Arnold, F.B. (1990) A comparison of pressure chamber, leaf-press, and canopy temperature for four species under humid conditions. Environmental and Experimental Botony. 30(1):75-83.

Sojka, R.E. and Busscheer, W.J. (1988) A computer based plant/soil aeration bibliography. In: Hook, D.D. and al, et, (eds.) Management, use and value of wetlands. Ecology and Management of Wetlands, Vol. II. pp. 284-289. Croom Helm Ltd, Kent, UK,.

Sojka, R.E. and Busscheer, W.J. (1988) A computer-based plant/soil-aeration bibliography. In: Hook, D.D. and McKee Jr, W.H. and Smith, H.K. and Gregory, J. and Burrell Jr, V.G. and DeVoe, M.R. and Sojka, R.E. and Gilbert, S. and Banks, R. and Stolzy, L.H. and Brooks, C. and Matthews, T.E. and Shear, T.H., (eds.) Management, use and value of wetlands. The Ecology and Management of Wetlands, Vol. II. 394 pp. Croom Helm Ltd, Kent, UK.

Sojka, R.E. and Karlen, D.L. and Busscher, W.J. (1991) A conservation tillage research update from the Coastal Plain Soil and Water Conservation Research Center of South Carolina: A review of previous research. Soil & Tillage Research. 21:361-376.

Busscher, W.J. and Sojka, R.E. and Karlen, D.L. (1989) A decade of progress in conservation tillage in the South Carolina Coastal Plain. pp. 83-85. In: Proc. of Southern Conservation Tillage Conference. USA-FL-Talahassee, 1989.

Busscher, W.J. and Sojka, R.E. and Karlen, D.L. (1989) A decade of progress in conservation tillage in the South Carolina Coastal Plain. Special Bulletin No. 89-1. Integrated Pest Management. pp. 83-85.

Entry, James A. and Sojka, R.E. (2000) The efficacy of polyacrylamide and related compounds to remove microorganisms and nutrients from animal wastewater. Journal of Environmental Quality. 29:1905-1914.

Entry, J.A. and Sojka, R.E. (2003) The efficacy of polyacrylamide to reduce nutrient movement from an irrigated field. Transactions of the ASAE. 46(1):75-83.

Sojka, R.E. and Bjorneberg, D.L. and Trout, T.J. and Strelkoff, T.S. and Nearing, M.A. (2007) The importance and challenge of modeling irrigation-induced erosion. Journal of Soil and Water Conservation. 62(3):153-162.

Sojka, R.E. and Entry, J.A. and Fuhrmann, J.J. (2006) The influence of high application rates of polyacrylamide on microbial metabolic potential in an agricultural soil. Applied Soil Ecology. 32:243-252.

Sojka, R.E. (2002) The use of PAM -- a linear polyacrylamide for use in irrigation water. In: Proc. National Alliance of Independent Crop Consultants 2001 Annual Meeting. Available: http://www.NAICC.org/