1. K-State home
  2. »Research and Extension
  3. »Southwest Research Center
  4. »Cropping Systems
  5. »Publications

Southwest Research Center – Tribune

Contact Info

Southwest Research Center - Tribune
1474 State Highway 96
Tribune, Kansas 67879
Phone: (620) 376-4761
Fax: (620) 376-2278


  1. Schlegel, A.J. and J. L. Havlin. 2020. Irrigated grain sorghum response to 55 years of nitrogen, phosphorus, and potassium fertilization. Agron. J. n/a:n/a. DOI:10.1002/agj2.20453

  2. Holman, J.D., A. Schlegel, A.K. Obour, and Y. Assefa. 2020. Dryland cropping system impact on forage accumulation, nutritive value, and rainfall use efficiency. Crop Sci. 60:3395-3409. DOI:10.1002/csc2.20251

  3. Schlegel, A.J., J.D. Holman, and Y. Assefa. 2020. A single tillage on a long-term no-till system on dryland crop performance. Agron. J. 112:3174-3187. DOI:10.1002/agj2.20284

  4. Obour, A.K., J.D. Holman, and A.J. Schlegel. 2020. Spring triticale forage response to seeding rate and nitrogen application. Agrosyst Geosci Environ. 2020;3:e20053. DOI: 10.1002/agg2.20053

  5. Munaro, L.B., T.J. Hefley, E. DeWolf, S. Haley, A.K. Fritz, G. Zhang, L.A. Haag, A.J. Schlegel, J.T. Edwards, D. Marburger, P. Alderman, S.M. Jones-Diamond, J. Johnson, J.E. Lingenfelser, S.H. Unêda-Trevisoli, and R.P. Lollato. 2020. Exploring long-term variety performance trials to improve enviroment-specific genotype x management recommendations: A case-study for winter wheat. J. Field Crops Research v255. DOI:10.1016/j.fcr.2020.107848

  6. Havlin, J.L., and A.J. Schlegel. 2020. Enhancing phosphorus-use efficiency in crop production. Burleigh Dodds Series in Ag. Sci. DOI:10.19103/as.2019.0062.08

  7. Schlegel, A.J., Y. Assefa, and D. O`Brien. 2020. Productivity and profitability of four crop rotations under limited irrigation. Applied Eng. Agric. 36(1):1-9. DOI:10.13031/aea.13416

  8. Obour, A.K., J.D. Holman, and A.J. Schlegel. 2019. Seeding rate and nitrogen application effects on oat forage yield and nutritive value. J. Plant Nutrition 42:13, 1452-1460. DOI:10.1080/01904167.2019.1617311

  9. Schlegel, A.J., Y. Assefa, L.A. Hagg, C.R. Thompson, and L.R. Stone. 2019. Soil water and water use in long-term dryland crop rotations. Argon. J. 111:2590-2599. DOI:10.2134/agronj2018.09.0623

  10. Schwartz, R.C., A.J. Schlegel, J.M. Bell, R.L. Baumhart, and S.R. Evett. 2019. Contrasting tillage effects on stored soil water, infiltration and evaptranspiration fluxes in a dryland rotation at two locations. Soil and Tillage Research 190:157-174. DOI:10.1016/j.still.2019.02.013

  11. Obour, A.K., A.J. Schlegel, R. Perumal, J.D. Holman, D. Ruiz Diaz. 2019. Evaluating grain sorghum hybrids for tolerance to iron chlorosis. J. Plant Nutrition. DOI:10.1080/01904167.2018.1549677

  12. Rudnick, D. R., S. Irmak, C. West, I. Kisekka, T.H. Marek, J. Schneekloth, D. Mitchell McCallister, V. Sharma, K. Djaman, J. Aguilar, J.L. Chávez, M. Schipanski, D.H. Rogers, A.J. Schlegel. 2019. Deficit irrigation management of maize in the High Plains Aquifer region: A review. Journal of the American Water Resources Association. DOI:10.1111/1752-1688.12723.

  13. Schlegel, A.J., Y. Assefa, L.A. Haag, C.R. Thompson, and L.R. Stone. 2019. Yield and overall productivity under long-term wheat-based crop rotations: 2000 through 2016. Agron. J. 111:264-274. DOI:10.2134/agronj2018.03.0171

  14. Schlegel, A.J., Y. Assefa, L.A. Haag, C.R. Thompson, and L.R. Stone. 2018. Long-term tillage on yield and water use of grain sorghum and winter wheat. Agron. J. 110:269-280. DOI:10.2134/agronj2017.02.010 4

  15. Schlegel, A.J., F.R. Lamm*, Y. Assefa, and L.R. Stone. 2018. Dryland corn and grain sorghum yield response to available soil water at planting. Agron. J. 110:236-245. DOI:10.2134/agronj2017.07.0398

  16. Rogers, D.H., A.J. Schlegel, J.D.Holman, J.P. Aguilar, and I. Kisekka. 2016. Irrigation of grain sorghum. p. 13. In I.A. Ciampitti and P.V.V. Prasad (eds.) Sorghum: State of the Art and Future Perspectives. Agron. Monogr. 58. ASA and CSSA, Madison, WI. DOI:10:2134/agronmonogr58.2014.0072

  17. Ciampitti, I.A., P.V.V. Prasad, A.J. Schlegel, L. Haag, R. W. Schnell, B. Arnall, and J. Lofton. 2017. Genotype x environment x management interactions: US sorghum cropping systems. p.  20. In I.A. Ciampitti and P.V.V. Prasad (eds.) Sorghum: State of the Art and Future Perspectives. Agron. Monogr. 58. ASA and CSSA, Madison, WI.  DOI:10:2134/agronmonogr58.2014.0067

  18. Kisekka, I. A.J. Schlegel, L. Ma, P.H. Gowda, and P.V.V. Prasad. 2017. Optimizing preplant irrigation for maize under limited water in the High Plains. Agric. Water Mgmt. 187:154-163. DOI:10.1016/j.agwat.2017.03.023

  19. Schlegel, A.J., Y. Assefa, H.D. Bond, L.A. Haag, and L.R. Stone.  2017. Changes in soil nutrients after 10 years of cattle manure and swine effluent application. Soil Tillage Res. 172:48-58. DOI: 10.1016/j.still.2017.05.004

  20. Lamm, F.R., D.H. Rogers, A.J. Schlegel, X. Lin, R.M. Aiken, N.L. Klocke, L. R. Stone, and L.K. Shaw. 2017. Trends in plant available soil water on producer fields of western Kansas. Applied Eng. Agric. 33(6):859-868. DOI: 10.13031/aea.12452

  21. Holman, J.D., K. Arnet, A. Dille, I. Kisekka, S. Maxwell, A. Obour, T., Roberts, K. Roozeboom, and A.J. Schlegel. 2018. Can cover or forage crops replace fallow in the semiarid central Great Plains. Crop Sci. 58:1-13. DOI: 10.2135/cropsci2017.05.0324

  22. Moberly, J.T., R.M. Aiken, X. Lin, A.J. Schlegel, R.L. Baumhardt, and R.C. Schwartz. 2017. Crop water production functions of grain sorghum and winter wheat in Kansas and Texas. J. Cont. Water Resource Res. Educ. 162:L42-60. DOI: 10.1111/j.1936-704x.03259x

  23. Schlegel, A.J. and J.L. Havlin. 2017. Corn yield and grain nutrient uptake from 50 years of nitrogen and phosphorus fertilization. Agron. J. 109:335-342. DOI: 10.2134/agronj2016.05.0294

  24. Adee, E., K. Roozeboom, G.R. Balboa, A.J. Schlegel, and I.A. Ciampitti. 2016. Drought-tolerant corn hybrids yield more in drought-stressed environments with no penalty in non-stressed environments. Front. Plant Sci. 7:1534. DOI:10.3389/fpls.2016.01534.

  25. Schlegel, A.J., Y. Assefa, L.A. Haag, C.R. Thompson, J.D. Holman, and L.R. Stone. 2017. Yield and soil water in three dryland wheat and grain sorghum rotations. Agron. J. 109:227-238. DOI: 10.2134/agronj2016.07.0387

  26. Schlegel, A.J., Y. Assefa, T.J.Dumler, L.A. Haag, L.R. Stone, A.D. Halvorson, and C.R. Thompson. 2016. Limited irrigation of corn-based no-till crop rotations in west central Great Plains.  Agron. J. 108:1132-1141. DOI: 10.2134/agronj2015.0536

  27. Schlegel, A.J., Y. Assefa, D. O’Brien, F.R. Lamm, L.A. Haag, and L.R. Stone.  2016.  Comparison of corn, grain sorghum, soybean, and sunflower under limited irrigation.  Agron. J.  108:670-679. DOI: 10.2134/agronj2015.0332

  28. Schlegel, A.J., Y. Assefa, H.D. Bond, S.M. Wetter, and L.R. Stone.  2015.  Corn response to long-term applications of cattle manure, swine effluent, and inorganic N fertilizer.  Agron. J. 1701-1710. DOI: 10.2134/agronj14.0632

  29. Schlegel, A.J., Y. Assefa, H.D. Bond, S.M. Wetter, and L.R. Stone.  2015. Soil physicochemical properties after 10 years of animal waste application.  Soil Sci. Soc. Am. J. 79:711-719. DOI: 10.2136/sssaj2014.11.0461

  30. Assefa, Y., K. Roozeboom, C.R. Thompson, A.J. Schlegel, L.R. Stone, and J. Lingenfelser.  2014.  Corn and grain sorghum comparison: All things considered.  Academic Press, Elsevier, Oxford, UK. DOI: 10.1016/c2013-0-14435-2

  31. Sohm, G., C.R, Thompson, Y. Assefa, A.J. Schlegel, and J. Holman. 2014.  Yield and quality of bermudagrass as a function of nitrogen rate.  Agron. J. 106:1489-1496. DOI: 10.2134/agronj13.0580

  32. Taylor, R.K. S.A. Staggenborg, C.B. Godsey, A.J. Schlegel, and R.D. Kochenower.  2014. A method to evaluate seeder performance.  J. Agric. Engineering 1:38-42. DOI: 10.1576/2345-7848_1.1.5

  33. Boyer, J.S., P. Byrne, K.G. Cassman, M. Cooper, D. Delmer, T. Greene, F. Gruis, J. Habben, N. Hausmann, N. Kenny, R. Lafitte, S. Paszkiewicz, D. Porter, A. Schlegel, J. Schussler, T. Setter, J. Shanahan, R.E. Sharp, T.J. Vyn, D. Warner, and J. Gaffney.  2013.  The U.S. drought of 2012 in perspective:  A call to action.  Global Food Security 2:139-143. DOI: 10.1016/j.gfs.2013.08.002

  34. Blanco-Canqui, H. J.D. Holman, A.J. Schlegel, J. Tatarko, and T.M. Shaver.  2013.  Replacing fallow with cover crops in a semiarid soil:  Effects on soil properties.  Soil Sci. Soc. Am. J. 77:1026-1034. DOI: 10.2136/sssaj2013.01.0006

  35. Blanco-Canqui, H. and A.J. Schlegel.  2013.  Implications of inorganic fertilization of irrigated corn on soil properties:  Lessons learned after 50 years.  J. Environ. Qual: 42:861-871. DOI: 10.2134/jeq2012.0451

  36. Frank, B.J., A.J. Schlegel, L. R. Stone, and M.B. Kirkham.  2013.  Association of grain yield with identifiable plant characteristics of corn hybrids in the west-central Great Plains.  Agron J. 105:383-394. DOI: 10.2134/agronj2012.0330

  37. Liu, L., N. Klocke, S. Yan, D. Rogers, A. Schlegel, F. Lamm, S.I. Chang, and D. Wang.  2013.  Impact of deficit irrigation on maize physical and chemical properties and ethanol yield.  Cereal Chemistry 90:453-462. DOI: 10.1094/CCHEM-07-12-0079-R

  38. Reddy, S.S., P,W. Stahlman, P.W. Geier, C.R. Thompson, R.S. Currie, A.J. Schlegel, B.L. Olson, and N.G. Lally.  2013.  Weed control and crop safety with premixed pyrasulfotole and bromoxynil in grain sorghum.  Weed Tech. 27:664-670. DOI: 10.1614/WT-D-13-00005.1

  39. Van Pelt, R.S., M.C. Baddock, T.M. Zobeck, A.J. Schlegel, M.F. Vigil, and V. Acosta-Martinez.  2013.  Field wind tunnel testing of two silt loam soils on the North American Central High Plains.  Aeolian Research 10:53-59. DOI: 10.1016/j.aeolia.2012.10.009

  40. Schlegel, A.J., L.R. Stone, T.J. Dumler, and F.R. Lamm.  2012.  Managing diminished irrigation capacity with preseason irrigation and plant density for corn production.  Trans. ASABE 55(2):525-531. DOI: 10.13031/2013.41394

  41. Halvorson, A.D. and A.J. Schlegel.  2012.  Crop rotation effect on soil carbon and nitrogen stocks under limited irrigation.  Agron J. 104:1265-1273. DOI: 10.2134/agronj2012.0113

  42. Abit, M.J.J., K. Al-Khatib, B.L. Olson, P.W. Stahlman, P.W. Geier, C.R. Thompson, R.S. Currie, A.J. Schlegel, J.D. Holman, K.A. Hudson, D.E. Shoup, M.J. Moechnig, W.J. Grichar, and B.W. Bean.  2011.  Efficacy of postemergence herbicides tankmixes in aryloxyphenoxypropionate-resistant grain sorghum.  Crop Protection 30:1623-1628. DOI: 10.1016/j.cropro.2011.08.011

  43. Blanco-Canqui, H., A.J. Schlegel, and W.F. Heer.  2011.  Soil-profile distribution of carbon and associated properties in no-till along a precipitation gradient in the central Great Plains.  Agric. Ecosystems Environment 144:107-116. DOI: 10.1016/j.agee.2011.07.004

  44. Holman, J.D., A.J. Schlegel, B.L. Olson, and S.R. Maxwell.  2011.  Volunteer glyphosate-tolerant corn reduces soil water storage and winter wheat yields.  Online. Crop Management doi:10.1094/CM-2011-0629-01-RS. DOI: 10.1094/cm-2011-0629-01-rs

  45. Holman, J.D., A.J. Schlegel, C.R. Thompson, and J. Lingenfelser.  2011.  Influence of precipitation, temperature, and 55 years on winter wheat yields in western Kansas.  Online.  Crop Management DOI: 10.1094/cm-2011-1229-01-rs.

  46. Stone, L.R., N.L. Klocke, A.J. Schlegel, F.R. Lamm, and D.J. Tomsicek.  2011.  Equations for drainage component of the field water balance.  Applied Engr. Agric. 27:345-350. DOI: 10.13031/2013.37076

  47. Blanco-Canqui, H., N.L. Klocke, A.J. Schlegel, L.R. Stone, and C.W. Rice.  2010.  Impacts of deficit irrigation on carbon sequestration and soil physical properties under no-till.  Soil Science Soc. Amer. J. (74:1301-1309). DOI: 10.2136/sssaj2009.0364

  48. Blanco-Canqui, H., L.R. Stone, A.J. Schlegel, J.G. Benjamin, M.F. Vigil, and P.W. Stahlman.  2010.  Continuous cropping systems reduce near-surface maximum compaction in no-till soils.  Agron. J. 102:1217-1225. DOI: 10.2134/agronj2010.0113

  49. Helms, T.C., R.A. Scott, W.T. Schapaugh, R.J. Goos, D.W. Franzen, and A.J. Schlegel.  2010.  Soybean iron-deficiency chlorosis tolerance and yield decrease on calcareous soils.  Agron. J.  102:492-498. DOI: 10.2134/agronj2009.0317

  50. Holman, J.D., C.R. Thompson, R.L. Hale, and A.J. Schlegel.  2010.  Forage yield and nutritive value of hard red and hard white winter wheat.  Agron. J. 102:759-773. DOI: 10.2134/agronj2009.0378

  51. Stone, L.R. and A.J. Schlegel.  2010.  Tillage and crop rotation phase effects on soil physical properties in the west-central Great Plains.  Agron. J. 102:483-491. DOI: 10.2134/agronj2009.0123

  52. Williams, J.R., R.V. Llewelyn, D.L. Pendell, A.J. Schlegel, T.J. Dumler.  2010.  A risk analysis of converting Conservation Reserve Program acres to a wheat-sorghum-fallow rotation.  Agron. J. 102:612-622. DOI: 10.2134/agronj2009.0142

  53. Blanco-Canqui, H., M.M. Mikha, J.G. Benjamin, L.R. Stone, A.J. Schlegel, D.J. Lyon, M.F. Vigil, and P.W. Stahlman.  2009.  Regional study of no-till impacts on near-surface aggregate properties that influence soil erodibility.  Soil Sci. Soc. Amer. J. 73:1-8. DOI: 10.2136/sssaj2008.0401

  54. Blanco-Canqui, H., L.R. Stone, A.J. Schlegel, D.J. Lyon, M.F. Vigil, M.M. Mikha, P.W. Stahlman, and C.W. Rice.  2009.  No-till induced increase in organic carbon reduces maximum bulk density of soils.  Soil Sci. Soc. Amer. J. 73:1871-1879. DOI: 10.2136/sssaj2008.0353

  55. Burton, R.O., R.P. Smith, and A.J. Schlegel.  2009.  Economics of reduced-till, no-till and opportunity cropping in western Kansas.  J. American Society Farm Managers Rural Appraisers.  72:164-176. DOI: 10.22004/ag.econ.189862

  56. Holman, J.D., C.R. Thompson, R.L. Hale, and A.J. Schlegel.  2009.  Grazing effects on yield and quality of hard red and hard white winter wheat.  Agron. J. 101:775-788. DOI: 10.2134/agronj2008.0163x

  57. Lyon, D.J., A.D. Pavlista, G.W. Hergert, R.N. Klein, C.A. Shapiro, S. Knezevic, S.C. Mason, L.A. Nelson, D.D. Baltensperger, R.W. Elmore, M.F. Vigil, A.J. Schlegel, B.L. Olson, and R.M. Aiken.  2009.  Skip-row planting patterns stabilize corn grain yields in the central Great Plains.  Online. Crop Management DOI: 10.1094/CM-2009-0224-02-RS.

  58. Stone, L.R., F.R. Lamm, A.J. Schlegel, and N.L. Klocke.  2008.  Storage efficiency of off-season irrigation.  Agron. J. 100:1-8. DOI: 10.2134/agronj2007.0242

  59. Wilde, G., K. Roozeboom, A. Ahmad, M. Claassen, B. Gordon, W. Heer, L. Maddux, V. Martin, P. Evans, K. Kofoid, J. Long, A. Schlegel, and M. Witt.  2007.  Seed treatment effects on early-season pests of corn and on corn growth and yield in the absence of insect pests.  J. Agric. Urban Entomology.  24:177-193. DOI: 10.3954/1523-5475-24.4.177

  60. Stone, L.R. and A.J. Schlegel.  2006.  Yield-water supply relationships of grain sorghum and winter wheat.  Agron. J. 98:1359-1366. DOI: 10.2134/agronj2006.0042

  61. Stone, L.R., A.J. Schlegel, A.H. Khan, N.L. Klocke, and R.M. Aiken.  2006.  Water supply: yield relationships developed for study of water management.  J. Nat. Resour. Life Sci. Educ. 35:161-173. DOI: 10.2134/jnrlse2006.0161

  62. Schlegel, A.J. and C.A. Grant.  2006.  Soil Fertility. P. 141-194.  In G.A. Peterson, P.W. Unger, and W.A. Payne.  2nd ed.  Dryland Agriculture.  Agron. Monogr. 23. ASA, CSSA, and SSSA, Madison, WI. DOI: 10.2134/agronmonogr23.2ed.c6

  63. McVay, K.A., J.A. Budde, K. Fabrizzi, M.M. Mikha, C.W. Rice, A.J. Schlegel,D.E. Peterson, D.W. Sweeney, and C. Thompson.  2006.  Management effects of soil physical properties in a long-term tillage studies in Kansas.  Soil Sci. Soc. Am. J. 70:434-438. DOI: 10.2136/sssaj2005.0249

  64. Bandura, V., B.A. Stewart, L. Baumhardt, S. Ambati, C.A. Robinson, and A.J. Schlegel.  2006.  Growing dryland grain sorghum in clumps to reduce vegetative growth and increase yield.  Agron. J. 98:1109-1120. DOI: 10.2134/agronj2005.0166

  65. Gehl, R.J., J.P. Schmidt, L.R. Stone, A.J. Schlegel, and G.A. Clark.  2005.  Insitu measurements of nitrate leaching implicate poor nitrogen and irrigation management on sandy soils.  J. Environ. Qual. 34:2243-2254. DOI: 10.2134/jeq2005.0047

  66. Schlegel, A.J., C.A. Grant, and J.L. Havlin. 2005.  Challenging approaches to N fertilizer recommendations in continuous cropping systems in the Great Plains.  Agron. J. 97:391-398. DOI: 10.2134/agronj2005.0391

  67. Lamm, F.R., A.J. Schlegel, and G. Clark.  2004.  Development of a best management practice for nitrogen fertigation of corn using SDI.  Applied Engineering Agriculture.  20:211-220. DOI: 10.13031/2013.15894

  68. Godsey, C.B., J.P. Schmidt, A.J. Schlegel, R.K. Taylor, C.R. Thompson, and R.J. Gehl.  2003.  Correcting iron deficiency in corn with seed-row applied iron sulfate.  Agron. J. 95:160-166. DOI: 10.2134/agronj2003.0160

  69. Martin, T.J., D.L. Siefers, A. Fritz, T.L. Harvey, and A.J. Schlegel.  Registration of Lakin wheat.  Plant Variety Protection Certificate 200200049.

  70. Martin, T.J., D.L. Siefers, J.P. Michaud, T.L. Harvey, A. Fritz, and A.J. Schlegel.  Registration of Stanton wheat.  Plant Variety Protection Certificate 200200050.

  71. Schlegel, A.J., K.C. Dhuyvetter, and J.L. Havlin.  2003.  Placement of UAN for dryland winter wheat in the central High Plains.  Agron. J. 95:1532-1541. DOI: 10.2134/agronj2003.1532

  72. Stone, L.R., D.E. Goodrum, A.J. Schlegel, M.N. Jaafar, and A.H. Khan.  2002.  Water depletion depth of grain sorghum and sunflower in the central High Plains.  Agron. J. 94:936-943. DOI: 10.2134/agronj2002.0936

  73. Schlegel, A.J., T.J. Dumler, and C.R. Thompson.  2002.  Feasibility of four-year crop rotations in the central Great Plains.  Agron J. 94:509-517. DOI: 10.2134/agronj2002.0509

  74. Bohm, S.U., C.W. Rice, and A.J. Schlegel.  2002.  Soil carbon turnover in residue managed wheat and grain sorghum study.  p.255-263, in J.M. Kimble, R. Lal, and R.F. Follett (ed.) Agricultural Practices and Policies for Carbon Sequestration in Soil, CRC Press, Boca Raton, FL. DOI:10.1201/9781420032291.ch24

  75. Martin, T.J., R.G. Sears, D.L. Seifers, T.L. Harvey, M.D. Witt, A.J. Schlegel, P.J. McCluskey, and J.H. Hatchett.  2001.  Registration of ‘Trego’ wheat.  Crop Sci. 41:929-930. DOI: 10.2135/cropsci2001.413929-ax

  76. Trooien, T.P., F.R. Lamm, L.R. Stone, M. Alam, D.H. Rogers, G.A. Clark, and A.J. Schlegel.  2000.  Subsurface drip irrigation using livestock wastewater: Dripline flow rates.  App. Engr. In Agr. 16(5):505-508. DOI: 10.13031/2013.5301

  77. Schlegel, A.J., K.C. Dhuyvetter, C.R. Thompson, and J.L. Havlin.  1999.  Agronomic and economic impacts of tillage and rotation on wheat and sorghum.  J. Prod. Agric.  12:629-636. DOI: 10.2134/jpa1999.0629

  78. Halvorson, A.D., J.L. Havlin, and A.J. Schlegel.  1997.  Nutrient management for sustainable dryland farming systems.  Annals of the Arid Zone J. 36(3):233-254.

  79. Havlin, J.L. and A.J. Schlegel.  1997.  Dryland conservation technologies: Enhancing agricultural profitability and sustainability.  Annals of the Arid Zone J. 36(3):291-303.

  80. Schlegel, A.J. and J.L. Havlin. 1997. Green fallow for the central Great Plains. Agron. J. 89:762-767. DOI:10.2134/agronj1997.00021962008900050009x

  81. Khan, A.H., L.R. Stone, O.H. Buller, A.J. Schlegel, M.C. Knapp, J.I. Perng, H.L. Manges, and D.H. Rogers. 1996. Educational software for illustration of drainage, evapotranspiration, and crop yield. J. Nat. Resour. Life Sci. Educ. 25:170-174. DOI:

  82. Peterson, G.A., A.J. Schlegel, D.L. Tanaka, and O.R. Jones. 1996. Precipitation-use efficiency as affected by cropping and tillage systems. J. Prod. Agric. 9:180-186. DOI: 10.2134/jpa1996.0180

  83. Schlegel, A.J., K.C. Dhuyvetter, and J.L. Havlin. 1996. Economic and environmental impact of long-term nitrogen and phosphorus fertilization. J. Prod. Agric. 9:114-118 DOI: 10.2134/jpa1996.0114

  84. Stone, L.R., A.J. Schlegel, R.E. Gwin, Jr., and A.H. Khan. 1996. Response of corn, grain sorghum, and sunflower to irrigation in the High Plains of Kansas. Agric. Water Mgmt. 30:251-259. DOI: 10.1016/0378-3774(95)01226-5

  85. Schlegel, A.J. and J.L. Havlin. 1995. Corn response to long-term nitrogen and phosphorus fertilization. J. Prod. Agric. 8:181-185. DOI: 10.2134/jpa1995.0181

  86. Stone, L.R., A.J. Schlegel, F.R. Lamm, and W.E. Spurgeon. 1994. Storage efficiency of preplant irrigation. J. Soil Water Cons. 49:338-343. DOI:

  87. Williams, J.R., P.L. Diebel, P.T. Berends, and A.J. Schlegel. 1994. Economic feasibility of using composted manure on irrigated grain sorghum. J. Prod. Agric. 7:323-327. DOI: 10.2134/jpa1994.0323

  88. Schlegel, A.J. 1992. Effect of composted manure on soil chemical properties and N utilization by grain sorghum. J. Prod. Agric. 5:153-157. DOI:10.2134/jpa1992.0153

  89. Hensley, D.L., S.C. Wiest, C.E. Long, J.A. Robbins, J.C. Pair, and A.J. Schlegel. 1992. Evaluation of trees for the central plains. J. Arboriculture 18:49-55. DOI:

  90. Schlegel, A.J. 1991. Reduced ammonia phytotoxicity from UAN solution by the urease inhibitor N-(n-butyl) thiophosphoric triamide. J. Fert. Issues. 8:40-44.

  91. Norwood, C.A., A.J. Schlegel, D.W. Morishita, and R.E. Gwin. 1990. Cropping system and tillage effects on available soil water and yield of grain sorghum and winter wheat. J. Prod. Agric. 3:356-362. DOI: 10.2134/jpa1990.0356

  92. Schlegel, A.J., D.W. Nelson, and L.E. Sommers. 1987. Use of urease inhibitors and urea fertilizers on winter wheat. Fert. Res. 11:97-112. DOI:10.1007/bf01051054

  93. Schlegel, A.J., D.W. Nelson, and L.E. Sommers. 1986. Field evaluation of urease inhibitors for corn production. Agron. J. 78:1007-1012. DOI:10.2134/agronj1986.00021962007800060015x