John Thomas Spargo

    • 1052 Citations
    • 15 h-Index
    20062019

    Research output per year

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    Research Output

    • 1052 Citations
    • 15 h-Index
    • 26 Article
    • 1 Chapter
    • 1 Review article
    2019

    Legume cover crops reduce poultry litter application requirements in organic systems

    Ackroyd, V. J., Cavigelli, M. A., Spargo, J. T., Davis, B., Garst, G. & Mirsky, S. B., Sep 1 2019, In : Agronomy Journal. 111, 5, p. 2361-2369 9 p.

    Research output: Contribution to journalArticle

    3 Scopus citations
    2018

    Strengths and limitations of Nitrogen rate recommendations for corn and opportunities for improvement

    Morris, T. F., Murrell, T. S., Beegle, D. B., Camberato, J. J., Ferguson, R. B., Grove, J., Ketterings, Q., Kyveryga, P. M., Laboski, C. A. M., McGrath, J. M., Meisinger, J. J., Melkonian, J., Moebius-Clune, B. N., Nafziger, E. D., Osmond, D., Sawyer, J. E., Scharf, P. C., Smith, W., Spargo, J. T., Van Es, H. M. & 1 others, Yang, H., Jan 1 2018, In : Agronomy Journal. 110, 1, p. 1-37 37 p.

    Research output: Contribution to journalReview article

    45 Scopus citations

    Water-extractable phosphorus in animal manure and manure compost: Quantities, characteristics, and temporal changes

    Liu, J., Spargo, J. T., Kleinman, P. J. A., Meinen, R., Moore, P. A. & Beegle, D. B., May 1 2018, In : Journal of Environmental Quality. 47, 3, p. 471-479 9 p.

    Research output: Contribution to journalArticle

    3 Scopus citations
    2017

    Characterizing cereal rye biomass and allometric relationships across a range of fall available nitrogen rates in the eastern United States

    Mirsky, S. B., Spargo, J. T., Curran, W. S., Reberg-Horton, S. C., Ryan, M. R., Schomberg, H. H. & Ackroyd, V. J., Jan 1 2017, In : Agronomy Journal. 109, 4, p. 1520-1531 12 p.

    Research output: Contribution to journalArticle

    9 Scopus citations

    Hairy vetch biomass across the eastern united states: Effects of latitude, seeding rate and date, and termination timing

    Mirsky, S. B., Ackroyd, V. J., Cordeau, S., Curran, W. S., Hashemi, M., Reberg-Horton, S. C., Ryan, M. R. & Spargo, J. T., Jan 1 2017, In : Agronomy Journal. 109, 4, p. 1510-1519 10 p.

    Research output: Contribution to journalArticle

    23 Scopus citations
    2016

    Biochar Application and Drought Stress Effects on Physiological Characteristics of Silybum marianum

    Keshavarz Afshar, R., Hashemi, M., DaCosta, M., Spargo, J. & Sadeghpour, A., Mar 25 2016, In : Communications in Soil Science and Plant Analysis. 47, 6, p. 743-752 10 p.

    Research output: Contribution to journalArticle

    15 Scopus citations

    Organic supplemental nitrogen sources for field corn production after a hairy vetch cover crop

    Spargo, J. T., Cavigelli, M. A., Mirsky, S. B., Meisinger, J. J. & Ackroyd, V. J., Sep 1 2016, In : Agronomy Journal. 108, 5, p. 1992-2002 11 p.

    Research output: Contribution to journalArticle

    25 Scopus citations
    2015

    Assessing Tillage Systems for Reducing Ammonia Volatilization from Spring-Applied Slurry Manure

    Sadeghpour, A., Hashemi, M., Weis, S. A., Spargo, J. T., Mehrvarz, S. & Herbert, S. J., Mar 26 2015, In : Communications in Soil Science and Plant Analysis. 46, 6, p. 724-735 12 p.

    Research output: Contribution to journalArticle

    8 Scopus citations

    Biomass and nitrogen content of hairy vetch-cereal rye cover crop mixtures as influenced by species proportions

    Poffenbarger, H. J., Mirsky, S. B., Weil, R. R., Maul, J. E., Kramer, M., Spargo, J. T. & Cavigelli, M. A., Jan 1 2015, In : Agronomy Journal. 107, 6, p. 2069-2082 14 p.

    Research output: Contribution to journalArticle

    38 Scopus citations

    Cover crop and poultry litter management influence spatiotemporal availability of topsoil nitrogen

    Poffenbarger, H. J., Mirsky, S. B., Kramer, M., Weil, R. R., Meisinger, J. J., Cavigelli, M. A. & Spargo, J. T., Nov 1 2015, In : Soil Science Society of America Journal. 79, 6, p. 1660-1673 14 p.

    Research output: Contribution to journalArticle

    6 Scopus citations

    Legume proportion, poultry litter, and tillage effects on cover crop decomposition

    Poffenbarger, H. J., Mirsky, S. B., Weil, R. R., Kramer, M., Spargo, J. T. & Cavigelli, M. A., Jan 1 2015, In : Agronomy Journal. 107, 6, p. 2083-2096 14 p.

    Research output: Contribution to journalArticle

    34 Scopus citations

    Nitrogen Competition between Corn and Weeds in Soils under Organic and Conventional Management

    Poffenbarger, H. J., Mirsky, S. B., Teasdale, J. R., Spargo, J. T., Cavigelli, M. A. & Kramer, M., Apr 1 2015, In : Weed Science. 63, 2, p. 461-476 16 p.

    Research output: Contribution to journalArticle

    12 Scopus citations
    2014

    Soil Fertility and Plant Nutrition

    McGrath, J. M., Spargo, J. & Penn, C. J., Jan 1 2014, Plant Health. Elsevier, p. 166-184 19 p.

    Research output: Chapter in Book/Report/Conference proceedingChapter

    11 Scopus citations
    2013

    Long-term effects of nitrogen and potassium fertilization on perennial ryegrass turf

    Ebdon, J. S., DaCosta, M., Spargo, J. & Dest, W. M., Jul 1 2013, In : Crop Science. 53, 4, p. 1750-1761 12 p.

    Research output: Contribution to journalArticle

    1 Scopus citations

    Organic grain cropping systems to enhance ecosystem services

    Cavigelli, M. A., Mirsky, S. B., Teasdale, J. R., Spargo, J. T. & Doran, J., Jun 1 2013, In : Renewable Agriculture and Food Systems. 28, 2, p. 145-159 15 p.

    Research output: Contribution to journalArticle

    40 Scopus citations

    Overcoming weed management challenges in cover crop-based organic rotational no-till soybean production in the Eastern United States

    Mirsky, S. B., Ryan, M. R., Teasdale, J. R., Curran, W. S., Reberg-Horton, C. S., Spargo, J. T., Wells, M. S., Keene, C. L. & Moyer, J. W., Jan 1 2013, In : Weed Technology. 27, 1, p. 193-203 11 p.

    Research output: Contribution to journalArticle

    92 Scopus citations
    2012

    Changes in soil organic carbon and nitrogen fractions with duration of no-tillage management

    Spargo, J. T., Cavigelli, M. A., Alley, M. M., Maul, J. E., Buyer, J. S., Sequeira, C. H. & Follett, R. F., Sep 1 2012, In : Soil Science Society of America Journal. 76, 5, p. 1624-1633 10 p.

    Research output: Contribution to journalArticle

    8 Scopus citations

    Conservation tillage issues: Cover crop-based organic rotational no-till grain production in the mid-Atlantic region, USA

    Mirsky, S. B., Ryan, M. R., Curran, W. S., Teasdale, J. R., Maul, J., Spargo, J. T., Moyer, J., Grantham, A. M., Weber, D., Way, T. R. & Camargo, G. G., Mar 1 2012, In : Renewable Agriculture and Food Systems. 27, 1, p. 31-40 10 p.

    Research output: Contribution to journalArticle

    87 Scopus citations

    Permanganate oxidizable carbon reflects a processed soil fraction that is sensitive to management

    Culman, S. W., Snapp, S. S., Freeman, M. A., Schipanski, M. E., Beniston, J., Lal, R., Drinkwater, L. E., Franzluebbers, A. J., Glover, J. D., Stuart Grandy, A., Lee, J., Six, J., Maul, J. E., Mirksy, S. B., Spargo, J. T. & Wander, M. M., Mar 1 2012, In : Soil Science Society of America Journal. 76, 2, p. 494-504 11 p.

    Research output: Contribution to journalArticle

    195 Scopus citations

    Reduced-tillage organic corn production in a hairy vetch cover crop

    Teasdale, J. R., Mirsky, S. B., Spargo, J. T., Cavigelli, M. A. & Maul, J. E., May 1 2012, In : Agronomy Journal. 104, 3, p. 621-628 8 p.

    Research output: Contribution to journalArticle

    38 Scopus citations
    2011

    Mineralizable soil nitrogen and labile soil organic matter in diverse long-term cropping systems

    Spargo, J. T., Cavigelli, M. A., Mirsky, S. B., Maul, J. E. & Meisinger, J. J., Jun 1 2011, In : Nutrient Cycling in Agroecosystems. 90, 2, p. 253-266 14 p.

    Research output: Contribution to journalArticle

    62 Scopus citations
    2009

    Illinois soil nitrogen test for prediction of fertilizer nitrogen needs of corn in Virginia

    Spargo, J. T., Alley, M. M., Thomason, W. E. & Nagle, S. M., Mar 1 2009, In : Soil Science Society of America Journal. 73, 2, p. 434-442 9 p.

    Research output: Contribution to journalArticle

    25 Scopus citations
    2008
    8 Scopus citations

    Soil and water environmental effects of fertilizer-, manure-, and compost-based fertility practices in an organic vegetable cropping system

    Evanylo, G., Sherony, C., Spargo, J., Starner, D., Brosius, M. & Haering, K., Aug 1 2008, In : Agriculture, Ecosystems and Environment. 127, 1-2, p. 50-58 9 p.

    Research output: Contribution to journalArticle

    147 Scopus citations

    Soil carbon sequestration with continuous no-till management of grain cropping systems in the Virginia coastal plain

    Spargo, J. T., Alley, M. M., Follett, R. F. & Wallace, J. V., Jul 1 2008, In : Soil and Tillage Research. 100, 1-2, p. 133-140 8 p.

    Research output: Contribution to journalArticle

    57 Scopus citations

    Soil nitrogen conservation with continuous no-till management

    Spargo, J. T., Alley, M. M., Follett, R. F. & Wallace, J. V., Nov 1 2008, In : Nutrient Cycling in Agroecosystems. 82, 3, p. 283-297 15 p.

    Research output: Contribution to journalArticle

    14 Scopus citations
    2007

    Mineralization and n fertilizer equivalent value of composts as assessed by tall fescue (festuca arundinacea)

    Bowden, C., Spargo, J. & Evanylo, G., Jan 1 2007, In : Compost Science and Utilization. 15, 2, p. 111-118 8 p.

    Research output: Contribution to journalArticle

    14 Scopus citations
    2006

    Repeated compost application effects on phosphorus runoff in the Virginia Piedmont

    Spargo, J. T., Evanylo, G. K. & Alley, M. M., Nov 1 2006, In : Journal of Environmental Quality. 35, 6, p. 2342-2351 10 p.

    Research output: Contribution to journalArticle

    30 Scopus citations