Selected Refereed Journal Articles (44 total since 2003)
  1. Duke, J.M., R.J. Johnston, A. Shober, and Z. Lui. 2022. Improving Targeting of Farmers for Enrollment in Agri-Environmental Programs. Applied Economic Perspectives & Policy. Accepted for publication Dec 2021.
  2. Duke, J.M., R.J. Johnston, A.L. Shober, and Z. Lui. 2022. Barriers to cover crop adoption: Evidence from parallel surveys in Maryland and Ohio. Journal of Soil and Water Conservation. Accepted for publication Sept 2021.
  3. Slaton, N.A., S.E. Lyons, D.L. Osmond, S.M. Brouder, S.W. Culman, G. Drescher, L.C. Gatiboni, J. Hoben, P.J.A. Kleinman, J.M. McGrath, R.O. Miller, A. Pearce, A.L. Shober, J.T. Spargo, J.J. Volenec. 2021. Minimum dataset and metadata guidelines for soil-test correlation and calibration research. Soil Science Society of America Journal. https://doi.org/10.1002/saj2.20338.
  4. *Mosesso, L.R., A. Buda, A. Collick, C. Kennedy, G. Folmar. and A. Shober. 2021. Examining sources and pathways of phosphorus transfer in a ditch-drained field with concentration-discharge relationships and isotope hydrograph separation. Journal of Environmental Quality 50(3): 680-693. https://doi.org/10.1002/jeq2.20226.
  5. Fiorellino, N., R. Kratochvil, A. L. Shober, and F. Coale. 2021. Is Starter Phosphorus Fertilizer Necessary for Corn Grown on Atlantic Coastal Plain Soils? Agrosystems, Geosciences & Environment. 2021; 4:1−8. https://doi.org/10.1002/agg2.20139
  6. Robinson, J., A. Buda, A. Collick, A. Shober, D. Ntarlagiannis, R. Bryant, G. Folmar, A.S. Andres, and L. Slater. 2020. Electrical monitoring of saline tracers to reveal subsurface flow pathways in a flat ditch-drained field. Journal of Hydrology. 586: 124862. https://doi.org/10.1016/j.jhydrol.2020.124862
  7. Duncan, E.W., D.L. Osmond, A.L. Shober, L. Starr, P. Tomlinson, J.L. Kovar, T.B. Mooreman, H.M. Peterson, N.M. Fiorellino, and K. Reid. 2019.  Phosphorus and soil health management practices. Agricultural and Environmental Letters 4:190014. https://doi.org/10.2134/ael2019.04.0014 – Awarded best paper 2021 in A&EL
  8. Osmond, D.L., A.L. Shober, A.N. Sharpley, E.W. Duncan, D.L.K. Hoag. 2019. Increasing the effectiveness and adoption of agricultural phosphorus management strategies to minimize water quality impairment. Journal of Environmental Quality.  https://doi.org/10.2134/jeq2019.03.0114
  9. Qin, Z., A.L. Shober. 2018. The challenges of managing legacy phosphorus losses from manure impacted agricultural soils. Current Pollution Reports. https://doi.org/10.1007/s40726-018-0100-1
  10. Qin, Z., A.L. Shober, K. Scheckel, C. Penn, and K. Turner. 2018. Mechanisms of phosphorus removal by phosphorus sorbing materials. Journal of Environmental Quality 47(5):1232-1241.  https://doi.org/10.2134/jeq2018.02.0064
  11. Wyngaard, N., M. Cabrerra, A.L. Shober, and R. Kanwar. 2018. Fertilization history can affect the estimation of nitrogen mineralization potential with chemical methods. Plant and Soil. https://doi.org/10.1007/s11104-018-3786-3
  12. Zhang, T.Q., Z.M. Zheng, R. Lal, Z. Lin, A. Sharpley, A. Shober, D. Smith, C.S. Tan, and P. VanCappellen. 2018. Environmental indicator principum with case references to agricultural soil, water, and air qualities and model-derived indicators. Journal of Environmental Quality 47(2):191-202. doi:10.2134/jeq2017.10.0398
  13. Shober, A.L., A.R. Buda, K.C. Turner, N.M. Fiorellino, A.S. Andres, J.M. McGrath, and J.T. Sims. 2017. Assessing Coastal Plain risk indices for subsurface phosphorus loss. Journal of Environmental Quality 46(6): 1270-1286. doi:10.2134/jeq2017.03.0102
  14. Shober, A.L., A.K. Koeser, D.C. McLean, G. Hasing, and K.A. Moore. 2017. Nitrogen fertilizer rate, timing, and application method affects growth of sweet viburnum and nitrogen leaching from simulated planting beds. HortScience 52(1):146-153.
  15. Qin, Z., A.L. Shober, R.C. Beeson, Jr., C. Wiese. 2013. Nutrient leaching from mixed species Florida residential landscapes. Journal of Environmental Quality 42(5):1534-1544. doi:10.2134/jeq2013.04.0126
  16. Gold, A.J., D. Parker, R.M. Wascom, J. Dobrowolski, M. O’Neill, P.M. Groffman, K Addy, Barber, S. Batie, B. Benham, M. Bianchi, T. Blewett, C. Evenson, K. Farrell-Poe, C. Gardner, W. Graham, J. Harrison, T. Harter, J. Kushner, R. Lowrance, J. Lund, R. Mahler, M. McClaran, M. McFarland, D. Osmond, J. Pritchett, L. Prokopy, C. Rock, A. Shober, M. Silitonga, D. Swackhamer, J. Thurston, D. Todey, R. Turco, G. Vellidis, and L. Wright Morton. 2013. Advancing water resource management in agricultural, rural, and urbanizing watersheds: Why Land-Grant Universities matter. Journal of Soil and Water Conservation 68(4): 337-348. doi:10.2489/jswc.68.4.337
  17. Loper, S., A.L. Shober, C. Wiese, G.C. Denny, C.D. Stanley and E.F. Gilman. 2013. Nutrient leaching from compost and tillage amended simulated residential landscapes. Journal of Environmental Quality 42(1): 260-270. doi:10.2134/jeq2012.0098Nelson, N.O. and A.L. Shober. 2012. Evaluation of phosphorus indices after twenty years of science and development. Journal of Environmental Quality 41(6): 1703-1710. doi: 10.2134/jeq2012.0342
  18. Marriott, J.M., A.L. Shober, P. Monaghan, and C. Wiese. 2012. Evaluation of equine owner and manager awareness of nutrient management and conservation techniques on small farms. Journal of Extension 50(5): Article 5RIB4.
  19. White, J.W., F.J. Coale, J.T. Sims, and L. Shober. 2010. Phosphorus runoff from waste water treatment biosolids and poultry litter applied to agricultural soils. Journal of Environmental Quality 39(1): 314-323.
  20. Shober, A.L. and J.T. Sims. 2007. Integrating phosphorus source and soil properties into risk assessments for phosphorus loss. Soil Science Society of America Journal 71: 551-560.
  21. Shober, A.L., R.C. Stehouwer, and K.E. MacNeal. 2007. Chemical fractionation of trace elements in biosolids-amended soils and correlation with trace elements in crop tissue. Communications in Soil Science and Plant Analysis 38: 1029-1046.
  22. Kleinman, P.J., D. Sullivan, A. Wolf, R. Brandt, Z. Dou, H. Elliott, J. Kovar, A. Leytem, R. Maguire, P. Moore, L. Saporito, A. Sharpley, A.  Shober, J.T. Sims, G. Toor, J. Toth, H. Zhang, and T. Zhang. 2007. Selection of a water extractable phosphorus test for manure and biosolids as an indicator of runoff loss potential. Journal of Environmental Quality 36: 1357-1367.
  23. Shober, A.L., D.L. Hesterberg, J.T. Sims and S. Gardner. 2006. Characterization phosphorus species in biosolids and manures using XANES spectroscopy. Journal of Environmental Quality 35(6): 1983-1993.
  24. Shober, A.L. and J.T. Sims. 2003. Phosphorus restrictions for land application of biosolids: Current status and future trends. Journal of Environmental Quality 32(6): 1955-1964.
  25. Shober, A.L., R.C. Stehouwer, and K.E. MacNeal. 2003. On-farm assessment of biosolids effects on soil and crop tissue quality. Journal of Environmental Quality 32(5): 1873-1880.

University of Delaware Nutrient Recommendations

University of Delaware Extension Publications

  1. Shober, A.L., K.L. Gartley, and J.T. Sims. 2019. Measurement and management of soil pH for crop production in Delaware. University of Delaware, Newark, DE.
  2. Shober, A.L., K.L. Gartley, and J.T. Sims. 2019. Calculating the lime recommendation using the Adams-Evans Soil buffer. University of Delaware, Newark, DE.
  3. Riggi, S.Y., G.M. Cartanza, and A.L. Shober. 2018. Temporary mortality management for on new poultry farms. University of Delaware, Newark, DE.
  4. Shober, A.L. and G.C. Denny. 2017. Identifying nutrient deficiencies in ornamental plants. University of Delaware, Newark, DE.
  5. Taylor, R.W.  K.L. Gartley, A.L. Shober, and J.T. Sims. 2017. Nutrient management recommendations – Hay and Forage Crops.  University of Delaware, Newark, DE.
  6. Shober, A.L. and R. Rothweiler. 2016. Basic tips for using the web soil survey to retrieve information for nutrient management planning. University of Delaware, Newark, DE.
  7. Shober, A.L. and R.W. Taylor. 2016. Estimating yield goal for crops. University of Delaware, Newark, DE.
  8. Sims, J.T., A.L. Shober, K.C. Turner, A.B. Leytem, and F.J. Coale. 2016. The Delaware phosphorus site index technical guidance manual. University of Delaware, Newark, DE.
  9. Shober, A.L. 2015. Delaware gardener’s guide to soil pH. University of Delaware, Newark, DE.
  10. Shober, A.L. 2015. Delaware gardener’s guide to lawn and landscape fertilizers. University of Delaware, Newark, DE.
  11. Shober, A.L. 2015. Phosphorus cycling in agriculture. University of Delaware, Newark, DE.
  12. Shober, A.L. 2015. Nitrogen cycling in agriculture. University of Delaware, Newark, DE.
  13. Shober, A.L., S.Y. Riggi, and R. Rothweiler. 2015. Temporary field storage of poultry litter. University of Delaware, Newark, DE.
  14. Shober, A.L. and R. W. Taylor. 2015. Estimating yield goal for crops. University of Delaware, Newark, DE.
  15. Shober, A.L. and R. W. Taylor. 2014. Nitrogen management for soybean. University of Delaware, Newark, DE.
  16. Shober, A.L. and S.Y. Riggi. 2013. Understanding the requirements of the Delaware nutrient management act. University of Delaware, Newark, DE.
  17. Shober, A.L., K.L. Gartley, and J.T. Sims. 2013. Nitrogen management for corn in Delaware: The pre-sidedress nitrate test. University of Delaware, Newark, DE.
  18. Shober, A.L. Nitrogen removal by Delaware crops. University of Delaware, Newark, DE.
  19. Shober, A.L. Defining high phosphorus soils in Delaware. University of Delaware, Newark, DE.
  20. Shober, A.L., J.T. Sims, and K.L. Gartley. 2013. Interpreting soil phosphorus and potassium tests. University of Delaware, Newark, DE.
  21. Shober, A.L. and J.T. Sims. 2013. Soil management options based on the phosphorus site index. University of Delaware, Newark, DE.
  22. Shober, A.L., J.T. Sims, and A.B. Leytem. 2013. Phosphorus management strategies for Delaware’s agricultural soils: The phosphorus site index. University of Delaware, Newark, DE.
  23. Shober, A.L., J.T. Sims, and J.L. Walls. 2012. Phosphorus removal by Delaware crops. University of Delaware, Newark, DE.

University of Florida Peer-reviewed Fact Sheets

Weekly Crop Update Articles 

  1. Shober, A.L. and J.O. Miller. 2021. Fall fertilization of cover crops did not increase biomass production when residual soil nitrate was high. Weekly Crop Update 29(27).
  2. Shober, A.L., J.O. Miller, and J. Challandes. 2021. Plant cover crops early to increase chances of successful establishment. Weekly Crop Update 29(26).
  3. Miller, J.O., J. Taraila, and A.L. Shober. 2021. Corn yields following cover crops. Weekly Crop Update 29(26).
  4. Miller, J.O., J. Taraila, and A.L. Shober. 2021. Estimation of cover crop nitrogen with drones. Weekly Crop Update 29(25).
  5. Taraila, J., J.O., Miller, and A.L. Shober. 2021. Cover crops, drone imagery, and winter weather. Weekly Crop Update 29(24).
  6. Shober, A.L. and J.O. Miller. 2021. University of Delaware scientists participate in a national effort to improve fertilizer recommendations. Weekly Crop Update 29(24).
  7. Shober, A.L. and J.O. Miller. 2021. Mid-season tissue testing can help with future management decisions. Weekly Crop Update 29(15).
  8. Miller, J.O., J. Taraila, and A.L. Shober. 2021. Cover crop termination for 2021. Weekly Crop Update 29(2).
  9. Riggi, S. and A.L. Shober. 2021. Still need nutrient management credits? Weekly Crop Update 29(1).
  10. Shober, A.L. and J.O. Miller. 2021 Early spring nitrogen application strategies. Weekly Crop Update 29(1).
  11. Miller, J.O., J. Taraila, and A.L. Shober. 2021. Cover crop termination for 2021. Weekly Crop Update 29(2).
  12. Riggi, S. and A.L. Shober. 2021. Still need nutrient management credits? Weekly Crop Update 29(1).
  13. Shober, A.L. and J.O. Miller. 2021 Early spring nitrogen application strategies. Weekly Crop Update 29(1).
  14. Shober, A.L., J.O. Miller, and M. Reiter. 2020. Using foliar manganese applications to correct deficiencies in double-cropped soybean.Weekly Crop Update 28(20). 
  15. Shober, A.L. and J.O. Miller. 2020. Nutrient management considerations as we near sidedress time for corn. Weekly Crop Update 28(11).
  16. Miller, J.O. and A.L. Shober. 2020. Do you need micronutrients in your starter? Weekly Crop Update 28(6).
  17. Miller, J.O. and A.L. Shober. 2020. Split applied k on soybeans. Weekly Crop Update 28(4).
  18. Miller, J.O., J. Taraila, and A.L. Shober. 2020. Early cover crop termination vs planting green. Weekly Crop Update 28(4). 
  19. Miller, J.O. and A.L. Shober. 2020. Keep up with K. Weekly Crop Update 28(4). 
  20. Shober, A.L. and J.O. Miller. 2020. Act now! Do not delay spring n applications to small grains. Weekly Crop Update 28(2).
  21. Mosesso, L.R., A.L. Shober, and J.O. Miller. 2020. UD laboratory studies suggest that humic/ fulvic acid additives are not effective at increasing P bioavailability. Weekly Crop Update 28(1).
  22. Miller, J.O. and A.L. Shober. 2019. Sulfur Deficiency on Field Corn. Weekly Crop Update 27, Issue 10 – May 31, 2019.
  23. Shober, A.L. and J.O. Miller. 2019. How Much N Could You Expect from Your Cover Crop? Weekly Crop Update 27, Issue 6 – May 2, 2019.
  24. Shober, A.L. and J.O. Miller. 2019. Starter Nitrogen Fertilizer for Corn. Weekly Crop Update 27, Issue 4 – April 19, 2019.
  25. Miller, J.O. and A.L. Shober. 2019. Get Ready to Make Spring N Applications to Small Grains. Weekly Crop Update 27, Issue 2 – April 5, 2019.
  26. Shober, A.L., J.O. Miller, P. Sylvester, C. Whaley. 2018. Consider a Fall Soil Nitrate Test to Guide Nitrogen Applications to Small Grains after Corn. Weekly Crop Update 26, Issue 27 – September 28,  2018.
  27. Johnson, G.J., A.L. Shober, and J.O. Miller. 2018. Assessing Nitrogen Management in Corn After this Challenging Season.  Weekly Crop Update 26, Issue 24 – September 7, 2018.
  28. Sylvester, P., J.O. Miller, C. Whaley, A. Shober, M. VanGessel, W. Cissel, and A. Collins. 2018. Prepare Now for Small Grain Planting Season. Weekly Crop Update 26, Issue 23 – August 31, 2018.
  29. Miller, J.O. and A.L. Shober. 2018. Checking Mid-season Nutrient Uptake. Weekly Crop Update 26, Issue 14 – June 29, 2018.
  30. Miller, J.O. and A.L. Shober. 2018. What is Denitrification and Why Should You Care? Weekly Crop Update 26, Issue 12 – June 15, 2018.
  31. Shober, A.L., S. Riggi, J. Miller, P. Sylvester, and K. Gartley. 2018. Tackling the Nitrogen Dilemma in Corn. Weekly Crop Update 26, Issue 11 – June 14, 2018. 
  32. Shober, A.L., S. Riggi, G. Toor, J. Miller, R. Kratochvil, and J. Miller. 2018. Heavy Rainfall is Making Nitrogen Management a Challenge. Weekly Crop Update 26, Issue 10 – June 1, 2018.
  33. Miller, J., C. Whaley, A.L. Shober, P. Sylvester, and R. Taylor. 2018. Sulfur Deficiency on Field Corn. Weekly Crop Update 26, Issue 10 – June 1, 2018. 
  34. Riggi, S., A.L. Shober, P. Sylvester and J.O. Miller. 2018. Should You be Taking PSNTs Right Now? Weekly Crop Update 26, Issue 9 – May 25, 2018. 
  35. Shober, A.L., J.O. Miller, P. Sylvester, and C. Whaley. 2018. Corn Emergence is Expected Soon, Take Time to Evaluate Stands. Weekly Crop Update 26, Issue 6 – May 4, 2018.
  36. Shober, A.L., J.O. Miller, P. Sylvester, C. Whaley, and R.W. Taylor. 2018. Avoiding Compaction Now that Warmer Temperatures Have Arrived. Weekly Crop Update 26, Issue 5 – April 26, 2018.
  37. Shober, A.L., J.O. Miller, P. Sylvester, and C. Whaley. 2018. Starter Fertilizer for Grain Corn. Weekly Crop Update 26, Issue 4 – April 20, 2018.
  38. Shober, A.L., J.O. Miller, P. Sylvester, C. Whaley, and R.W. Taylor. 2018. Now that Spring has Sprung, is it Time to Plant Corn? Weekly Crop Update 26, Issue 3 – April 13, 2018.
  39. Miller, J.O. and Shober, A.L. 2018. Spring Nitrogen on Pastures. Weekly Crop Update 26, Issue 1 – March 2, 2018.
  40. Miller, J.O. and Shober, A.L. 2018. Complete Wheat Tiller Counts Now to Determine the Need for Spring Nitrogen. Weekly Crop Update 26, Issue 1 – March 2, 2018. 
  41. Shober, A.L. and R.W. Taylor. 2016. The Ins and Outs of Nutrient Management on Soybean. Weekly Crop Update, Volume 24, Issue 11 – June 6, 2016.
  42. Shober, A.L. and R.W. Taylor. 2016. What Should You Resi-do? Nutrient Management Considerations When Managing Heavy Crop Residues. Weekly Crop Update, Volume 24, Issue 10 – May 27, 2016.
  43. Taylor, R., J. Whalen, M. VanGessel, N. Kleczewski, A. Shober, P. Sylvester, C. Whaley and D. Severson. 2016. Replant Decisions for Field Corn. Weekly Crop Update, Volume 24, Issue 9 – May 20, 2016.
  44. Taylor, R., J. Whalen, M. VanGessel, N. Kleczewski, A. Shober, P. Sylvester, C. Whaley and D. Severson. 2016. Has Field Corn Planting Been Delayed – What Management Decisions Need Adjustment? Weekly Crop Update, Volume 24, Issue 9 – May 20, 2016.
  45. Taylor, R., and A.L. Shober. 2016. Nitrogen Applications on Wheat After Heading. Weekly Crop Update, Volume 24, Issue 7 – May 6, 2016.
  46. Taylor, R., and A.L. Shober. 2016. Sulfur Deficiency on Field Corn. Weekly Crop Update, Volume 24, Issue 7 – May 6, 2016.
  47. Taylor, R., and A.L. Shober. 2016. Nitrogen Deficiency on Forage Grasses. Weekly Crop Update, Volume 24, Issue 4 – April 15, 2016.
  48. Taylor, R., and A.L. Shober. 2016. Anxious to Begin Planting Corn? Weekly Crop Update, Volume 24, Issue 4 – April 15, 2016.
  49. Shober, A.L., R. Taylor, J. McGrath, and E. Ritchey. 2015. Beware of “Alternatives” when Purchasing Agricultural Lime. Weekly Crop Update, Volume 23, Issue 3 – April 10, 2015.
  50. Johnson, G.J. and A.L. Shober. 2013. Field Crops Growers Can Conserve Nitrogen in Poultry Litter While Retaining Benefits of No-Till. Weekly Crop Update, Volume 28, Issue 8 – May 17, 2013.
  51. Shober, A.L. 2012. UD Extension Welcomes New Nutrient Management Specialist. Weekly Crop Update, Volume 20, Issue 27 – September 21, 2012.
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