Allen Torbert headshot

Allen Torbert

Supervisory Soil Scientist, Research Leader

Crop, Soil & Environmental Sciences

(334) 844-3979 

  atorbert@auburn.edu 

  

Get In Touch

Address:
411 S. Donahue Dr.
Auburn Univ, AL 36849

Biography

EDUCATION

  • 1989 Ph.D., University of Illinois (Agronomy and Soils)
  • 1985 M.S., Auburn University (Agronomy and Soils)
  • 1983 B.S., Auburn University (Agronomy and Soils)

PROFESSIONAL EXPERIENCE

  • 2005 – present Research Leader, USDA-ARS Auburn, AL

  • 2001 – 2005 Soil Scientist, Lead Scientist – USDA, ARS Auburn, AL

  • 1992 – 2001 Soil Scientist, Lead Scientist – USDA, ARS Temple, TX

  • 1989 – 1992 Postdoc Research Associate -USDA, ARS Auburn, AL (Appointed Affiliate Faculty AU)

  • 1985 – 1989 Research Assistant – (appointed Affiliate Faculty AU Agronomy and Soils Dept.) University of Illinois, Urbana-Champaign, IL.

  • 1983 – 1985 Research Assistant- Auburn University, Auburn, AL

HONORS & AWARDS

  • 2008 – Fellow of the American Society of Agronomy

  • 2009 – Fellow of the Soil Science Society of America

  • 2015 – American Coal Ash Association “Champion Award” (the highest honor of the organization)

  • 2023 – USDA ARS Southeast Area Senior Research Scientist of the Year

  • 2023 – ARS National Technology Transfer Award

  • 2023 – REE Under Secretary’s Award for outstanding technology transfer

  • 2023 – USDA Secretary’s Honor Award, (highest non-monetary recognition of Dept. of Agriculture)

  • 2024 – American Society of Agronomy – Environmental Quality Research

  • 2024 – Soil Science Society of America – Soil Science Applied Research

PROFESSIONAL AFFILIATIONS

  • American Assoc. for the Advan. of Science

  • American Society of Agronomy (Fellow)

  • Soil Science Society American (Fellow)

  • International Soil Tillage Research Organization

  • Soil and Water Conservation Society of America

Research

PROFESSIONAL ACTIVITIES

As ARS Research Leader, 2005 – present:
My assignment is that of a Supervisory Soil Scientist and Research Leader of the USDA, ARS National Soil Dynamics Laboratory, Auburn, AL. As the Research Leader, responsibilities include managing coordinating research programs for the laboratory which has the mission to develop technologies and strategies for managing soils that increase adoption of sustainable production/cropping systems, particularly conservation systems that reduce economic risk and farm production costs; improving soil quality and productivity; and relating agriculture to global change. Specific research focuses on improving methods for waste application to maximize plant nutrient use efficiencies, while minimizing pollution potential. Other important objectives of the research program are to develop conservation systems that reduce drought risk of cash crops, develop environmentally sound waste management systems, and determine the effects of atmospheric CO2 levels on above- and below ground processes that affect crop production, soil carbon storage and trace gas emissions.

Publications

RECENT PUBLICATIONS

  1. Torbert, H.A., J.T. Ingram, S.A. Prior. 2015. High residue conservation tillage system for cotton production: A farmer’s perspective. European Agrophysical J. 2 (1): 1-14.
  2. Zhang, Q., J. Wang, L. Zhao, F. Wu, Z. Zhang, and H.A. Torbert. 2015. Spatial heterogeneity of surface roughness during different erosive stages of tilled loess slopes under a rainfall intensity of 1.5 mm min-1. Soil Tillage Research 153:95–103.
  3. Watts, D.B., T.R. Way, H.A. Torbert, and S.D. Armstrong. 2015. Subsurface band application of poultry litter and its influence on P concentration and retention in soil following runoff from permanent pastures. Eviron. Quail 44(6):1930-1937.  doi:10.2134/jeq2015.01.0037.
  4. Watts, D. B., G. B. Runion, K.W. Nannenga, and H.A. Torbert. 2015. Impacts of enhanced efficiency fertilizers on greenhouse gas emissions in a coastal plain soil under cotton. J. Environ. Qual. 44:1699–1710.
  5. Krueger, E., D. Kurtener, and H.A. Torbert. 2015. Fuzzy indicator approach: development of impact factor of soil amendments. European Agrophysical J. 2(4):93-105. http://dx.doi.org/10.17830/j.eaj.2015.02.093.
  6. Torbert, H.A., D. Kurtener, and E. Krueger. 2015. Evaluation of soil disturbance using fuzzy indicator approach. European Agrophysical Journal. 2(4):106-115. http://dx.doi.org/10.17830/j.eaj.2015.02.106.
  7. Kavetskiy, A., G.N. Yakubova, S.A. Prior, and H.A. Torbert. 2016. “Hot background” of the mobile inelastic neutron scattering system for soil carbon analysis. Applied Radiation and Isotopes 107:299-311, doi 10.1016/j.apradiso.2015.11.012.
  8. Yakubova, G.N., A. Kavetskiy, S.A. Prior, and H.A. Torbert. 2016. Bench marking the inelastic neutron scattering soil carbon method. Vadose Zone Journal. doi:10.2136/vzj2015.04.0056.
  9. Runion, G.B., S.A. Prior, L.J. Capo-Chichi, H.A. Torbert, E. van-Santen. 2016. Varied growth responses of cogongrass ecotypes to elevated CO2. Front. Plant Sci. 6:1182 Doi:10.3389/fpls.2015.01182.
  10. Torbert, H.A., D. Kurtener, and E. Krueger. 2016. Examination of data collected from experiments on soil disturbance using fuzzy indicator approach. European Agrophysical J. 3: 93-102. http://dx.doi.org/10.17830/j.eaj.2015.02.093
  11. Yakubova, G., A. Kavetskiy, S.A. Prior, and H.A. Torbert. 2016. Application of Geant4 simulation for analysis of soil carbon inelastic neutron scattering measurements. Applied Radiation and Isotopes 113:33-39. http://dx.doi.org/10.1016/j.apradiso.2016.04.013.
  12. Watts, D. B., and H.A. Torbert. 2016. Influence of flue gas desulfurization gypsum on reducing soluble phosphorus in successive runoff events from a Coastal Plains bermudagrass pasture. J. Environ. Qual. 45:1071-1079.
  13. Marble, S.C., S.A. Prior, G.B. Runion, H.A. Torbert, C.H. Gilliam, G.B. Fain, J.L. Sibley, and P.R. Knight. 2016. Species and media effects on soil carbon dynamics in the landscape. Sci. Rep. 6, 25210; doi: 10.1038/srep25210.
  14. Kurtener, D., E. Krueger, and H.A. Torbert. 2016. Soil Disturbance Evaluation: Application of ANFIS. European Agrophysical Journal 3(2):42-55. http://dx.doi.org/10.17830/j.eaj.2016.03.042.
  15. Wang, J., D.B. Watts, Q. Meng, Q. Zhang, F. Wu, and H.A. Torbert. 2016. Soil water infiltration impacted by maize (Zea mays L.) growth on sloping agricultural land of the loess plateau. Soil Water Conserv. 71(4):301-309. DOI:10.2489/jswc.71.4.301.
  16. Chapman, K.E., H.A. Torbert, and D.B. Watts. 2016. Validation of a new method for quantification of ammonia volatilization from agricultural field plots. European Agrophysical J. 3:76 -90. http://dx.doi.org/10.17830/j.eaj.2016.03.078.
  17. Calvo, P., D.B. Watts, J.W. Kloepper, and H.A. Torbert. 2016. Application of microbial-based inoculants for reducing N2O emissions from soil under two different ammonium nitrate-based fertilizers. Soil Sci. 181:427-434.
  18. Calvo, P., D.B. Watts, J.W. Kloepper, and H.A. Torbert. 2016. The influence of microbial-based inoculants influence on N2O emissions from soil planted with Corn (Zea mays L.) under greenhouse conditions with different nitrogen fertilizer regimens. J. Microbiol. 62:1041-1056.
  19. Kornecki, T.S., S.A. Prior, and H.A. Torbert. 2016. Effects of a custom cover crop residue manager in a no-till cotton system. Applied Engineering Agric. 32:333-340.
  20. Watts, D.B., and H.A. Torbert. 2017. Three annual flue gas desulfurization gypsum applications on macronutrient and micronutrient losses in runoff from bermudagrass fertilized with poultry litter. Soil Sci. 182:18-27.
  21. Watts, D.B., J.B. Hess, S.F. Bilgili, H.A. Torbert, J.L. Sibley, and J.D. Davis. 2017. Flue gas desulfurization gypsum: Its effectiveness as an alternative bedding material for broiler production. J. Appl. Poultry Res. 26:50-59.
  22. Calvo, P., D.B. Watts, J.W. Kloepper, and H.A. Torbert. 2017. Effect of microbial-based inoculants on nutrient concentrations and early root morphology of corn (Zea mays). Plant Nutr. Soil Sci. 180:56-70.
  23. Caplan, J.S., D. Gimenez, V. Subroy, R.J. Heck, S.A. Prior, G.B. Runion, and H.A. Torbert.   Nitrogen-mediated effects of elevated CO2 on intra-aggregate soil pore structure.  Global Change Biology 23:1585-1597; doi: 10.1111/gcb.13496.
  24. Torbert, H.A., R.L. Chaney, and D.B. Watts. 2017. Potential adherence of flue gas desulfurization gypsum to forage as a consideration for excessive ingestion by ruminants. J. Environ. Qual. 46:431-435.
  25. Yakubova, G., A. Kavetskiy, S.A. Prior, and H.A. Torbert. 2017. Applying Monte‑Carlo simulations to optimize an inelastic neutron scattering system for soil carbon analysis. Applied Radiation and Isotopes. 128:237-248.  http://dx.doi.org/10.1016/j.apradiso.2017.07.003.
  26. Yakubova, G., A. Kavetskiy, S.A. Prior, and H.A. Torbert. 2017. Measurements of soil carbon by neutron-gamma analysis in static and scanning mode. Journal of Visualized Experiments (J. Vis. Exp. (126), e56270, doi:10.3791/56270).
  27. Paul, C.J., C.W. Robinson, J.R. Kessler, D.E. Wells, J.L. Sibley, H.A. Torbert, and D.B. Watts. 2018. Evaluation of Flue-Gas Desulfurization gypsum in poultry litter as a substrate component for greenhouse horticultural crops. Agri. Res. & Tech.: Open Access J. 13(3): 555886. DOI: 10.19080/ ARTOAJ.2018.13.555886.
  28. Torbert, H.A., R.L. Chaney, and D.B. Watts. 2018. Impact of FGD gypsum and manure application on transfer of potentially toxic elements to plants, soil, and runoff. J. Environ. Qual. 47:865-872.
  29. Kavetskiy, A., G. Yakubova, S.A. Prior, and H.A. Torbert. 2018. Energy correlated timing spectra in target neutron techniques. Nuclear Inst, and Methods in Physics Research B 433: 80–86.
  30. Kost, D., K. Ladwig, L. Chen, T. DeSutter, L. Espinoza, D. Norton, D. Smeal, H.A. Torbert, D.B. Watt, R.P. Wolkowski, and W.A. Dick. 2018. Meta-Analysis of gypsum effects on crop yields and chemistry of soils, plant tissues, and vadose water at various research sites in the USA. J. Environ. Qual. 47:1284-1292.
  31. Murphy, A.M., G.B. Runion, S.A. Prior, H.A. Torbert, J.L. Sibley, and C.H. Gilliam. 2018. Greenhouse gas emissions from an ornamental crop as impacted by two best management practices: irrigation delivery and fertilizer placement. J. Environ. Hort. 36(2):58-65.
  32. Lin, Y., D.B. Watts, J.W. Kloepper, and H.A. Torbert. 2018. Influence of plant growth-promoting rhizobacteria on corn growth under different fertility sources. Soil Sci. Plant Anal. 49:1239-1255. DOI: 10.1080/00103624.2018.1457155.
  33. He, Z., I.A. Tazisong, X. Ying, D.B. Watts, Z. Senwo, and H.A. Torbert. 2019. Long-term cropping system, tillage, and poultry litter application impacted an Alabama Utisol’s chemical properties. Pedosphere 29:180-194. doi:10.1016/S1002-0160(19)60797-6.
  34. Kavetskiy, A., G. Yakubova, N. Sargsyan, C. Wikle, S.A. Prior, H.A. Torbert, and B.A. Chin. 2019. Scanning mode application of neutron-gamma analysis for soil carbon mapping. Pedosphere 29:334-343. DOI:10.1016/S1002-0160(19)60806-4.
  35. Lin, Y., D.B. Watts, H.A. Torbert, and J.A. Howe. 2019. Double-crop wheat and soybean yield response to poultry litter application. Crop, Forage, & Turfgrass Management. Crop, Forage, Turfgrass Mang. 5:180054. doi:10.2134/cftm2018.10.0082
  36. Yakubova, G., A. Kavetskiy, S.A. Prior, and H.A. Torbert. 2019. Tagged neutron method for carbon analysis of large soil samples. Applied Radiation and Isotopes. 150:127-134.

 

  1. Watts, D.B., H.A. Torbert, and E.E. Codling. 2019. Poultry production management on the buildup of nutrients in litter. J. Poult. Sci. 18 (9): 445‑453. DOI: 10.3923/ijps.2019.
  2. Prior, S.A., G.B. Runion, and H.A. Torbert. 2019. Long-term response of a bahaigrass pasture to elevated CO2 and soil nitrogen management. Soil Tillage Res. 194: 104326 https://doi.org/10.1016/j.still.2019. 104326.
  3. Yakubova, G., A. Kavetskiy, S.A., Prior, and H.A. Torbert. 2019. The application of the neutron-gamma analysis for determination of C/N ratio in composts. Compost Science & Utilization, 27:146-160. DOI: 10.1080/1065657X.2019.1630339.
  4. Busby, R.R., H.A. Torbert, and S.A. Prior. 2019. Soil and vegetation responses to amendment with pulverized classified paper waste. Soil Tillage Res. 194: https://doi.org/10.1016/j.still.2019.104328
  5. Murphy, A., G.B. Runion, S.A. Prior, H.A. Torbert, J.L. Sibley, G.B. Fain, and J. Pickens. 2019. Effects of fertilizer placement on greenhouse gas emissions from a sun and shade grown ornamental crop. J. Environ. Hort. 37(3):74-80, DOI: 10.24266/0738-2898-37.3.74.
  6. Lin, Y., D.B. Watts, J.W. Kloepper, Y. Feng, and H.A. Torbert. 2019. Influence of Plant Growth-Promoting Rhizobacteria on Corn Growth under Drought Stress. Commun. Soil Sci. Plant Anal DOI: 10.1080/00103624.2019.1705329.
  7. Watts, D.B., G.B. Runion, J.L. Purswell, H.A. Torbert, and J. Davis. 2020. FGD gypsum litter effects on gaseous losses from a broiler house. Intern. J. Poultry Science 19:42-50. DOI: 10.3923/ijps.2020.42.50.
  8. Lin, Y., D.B. Watts, H.A. Torbert, J.A. Howe, and Y. Feng. 2019. Integration of poultry litter and mineral N on growth and yield of winter canola. Agron. J. 112:2496–2505.
  9. Lin, Y., D.B. Watts, H.A. Torbert, and J.A. Howe. 2019. Influence of nitrogen rate on winter canola production in the southeastern United States. Agron. J. 112: 2978–2987.
  10. Chakraborty, D., R. Prasad, A. Bhatta, and H.A. Torbert. 2021. Understanding the environmental impacts of phosphorus in acidic soils receiving repeated poultry litter applications. Sci. Total Environ. 779 (https://doi.org/10.1016/j.scitotenv.2021.146267).
  11. Murphy, A., G.B. Runion, S.A. Prior, H.A. Torbert, J.L. Sibley, G.B. Fain, and J. Pickens. 2021. Effects of growth substrate on greenhouse gas emissions from three annual species. J. Environ. Hort. 39:53-61.
  12. Bhatta A., D. Chakraborty, R. Prasad, J. Shaw, J. Lamba, E. Brantley, and H.A. Torbert. 2021. Suitability of Mehlich 3 as a Universal Soil Test Extractant for Phosphorous Loss Risk Assessment for Diverse Soil Regions. Agrosyst Geosci Environ. 2021;4:e20187. https://doi.org/10.1002/agg2.20187.
  13. Watts, D.B., G.B. Runion, and H.A. Torbert. 2021. Influence of FGD gypsum on P loss from a horticultural growth medium. Horticulturae 7, 199. https://doi.org/10.3390/horticulturae7070199.
  14. Kavetskiy, A., G. Yakubova, N. Sargsyan, S.A. Prior, H.A. Torbert. 2021. Neutron Stimulated Gamma Ray Measurements for Chlorine Detection. IEEE Trans Nuclear Science. 68:1495‑1504. DOI: 10.1109/TNS.2021.3086327.
  15. Kavetskiy, A., G. Yakubova, N. Sargsyan, S.A. Prior, H.A. Torbert, and B.A. Chin. 2021. Measuring and mapping potassium in agricultural fields using gamma spectroscopy. IEEE Trans. Nuclear Science. 68, no. 10, pp.2550-2558. DOI: 10.1109/TNS.2021.3109486.
  16. Chakraborty, D., R. Prasad, D.B. Watts, and H.A. Torbert. 2022. Exploring alternate methods for predicting sorption-desorption parameters for environmental phosphorus loss assessment in poultry litter impacted soils. J. Environ Mang. https://doi.org/10.1016/j.jenvman.2022.115454.
  17. Li, X., J. Jiang, J. Guoa, A. McClung, K. Chend, M.V. Velarca, H.A. Torbert, F. Dou. 2023. Effect of Nitrogen Application Rate under Organic and Conventional Systems on Rice (Oryza sativa L.) Growth, Grain Yield, Soil Properties, and Greenhouse Gas Emissions. J. Plant Nutri. 46:167-1649, DOI: 10.1080/01904167.2022.2093746.
  18. Bartley, P., L. Erbrick, M. Knotts, D.B. Watts, and H.A. Torbert. 2023. Influence of Flue Gas Desulfurization Gypsum on Phosphorus Loss in Pine Bark Substrates. Agriculture 13,283. DOI:10.3390/agriculture13020283.
  19. Hamid, A., A.E. Wilson, H.A. Torbert, and D. Wang. 2023. Sorptive Removal of Phosphorus by Flue Gas Desulfurization Gypsum in Batch and Column Systems. Chemosphere 320, https://doi.org/10.1016/j.chemosphere. 2023.138062.
  20. Roy, P., H. Jahromi, T. Rahman, J. Baltrusaitis, E.B. Hassan, H.A. Torbert, and S. Adhikari. 2023. Hydrotreatment of Pyrolysis Bio-oil and Triglyceride Blends. Fuel Processing Technology 245:107753. https://doi.org/10.1016/j.fuproc.2023.107753.
  21. Waldrip, H.M., T.N. Campbell, J.A. Koziel, D.B. Watts, and H.A. Torbert. 2023. Legacy Phosphorus in Alabama Hartsells Soil after Long‑Term Amendment with Poultry Litter. J. Environ. Qual. DOI: 10.1002/jeq2.20462.
  22. Kavetskiy, A., G. Yakubova, S.A. Prior, and H.A. Torbert. 2023. Neutron gamma analysis of soil carbon: Post-irradiation physicochemical effects. Environmental Technology & Innovation. 31:103219. https://doi.org/10.1016/j.eti.2023.103219.
  23. Chakraborty, D., R. Prasad, D.B. Watts, and H.A. Torbert. 2023. Effectiveness of flue gas desulfurization gypsum in reducing phosphorus solubility in poultry litter when applied as an in-house amendment. Waste Manag. 171. https://doi.org/10.1016/j.wasman.2023.08.014.
  24. Biswas, B., T. Rahman, M. Sakhakarmy, H. Jahromi, J. Baltrusaitis S. Adhikari, H.A. Torbert. 2023. Phosphorus adsorption using chemical and metal chloride activated biochars: Isotherms, kinetics and mechanism study. Bioresources Techn. https://doi.org/10.1016/j.heliyon.2023.e19830.
  25. Kichler, C.M., T. Kornecki, H.A. Torbert, D.B. Watts and R. Prasad. 2023. Cover crop termination methods and custom residue manager effects on collard production. Agronomy. 13, 2595 https://doi.org/10.3390/agronomy13102595.
  26. Zinnert, H.M., M.F. Gladfelter, H.P. Poe, K.L. Merrill, A.V. Hennessey, M.B. McDonald, D. Wang, H.A. Torbert, A.E. Wilson. 2023. Positive and negative impacts of flue gas desulfurization (FGD) gypsum on water quality. J. Environ. Mang. 348 (2023) 119307. https://doi.org/10.1016/j.jenvman.2023.119307.
  27. Watts, D.B., T. Horvath, H.A. Torbert, A.O. Adesemoye. 2023. Effects of different manure sources on soil erosion utilizing a portable rainfall simulator. Applied Engineering in Agriculture 39(6): 565-572. ISSN 0883-8542. https://doi.org/10.13031/aea.15651.
  28. Zinnert, H.M., M.F. Gladfelter, S.E. Tenison, H.P. Poe, K.L. Merrill, A.V. Hennessey, M.B. McDonald, D. Wang, H.A. Torbert, A.E. Wilson. 2024. Impacts of flue gas desulfurization (FGD) gypsum on water quality and the algal community in catfish aquaculture ponds. Aquaculture 581 740406. https://doi.org/10.1016/j.aquaculture.740406.
  29. Prior, S.A., G.B. Runion, A. Murphy, H. Hoffman, M.G. Johnson, H.A. Torbert. 2023. Influence of Biochar Addition to Nursery Container Media: Trace Gas Efflux, Growth, and Leachate N. J. Environ. Horticulture. 41 (4):141-151. http://meridian.allenpress.com/jeh/article-pdf/41/4/141/3303897/i2573-5586-41-4-141.pdf
  30. Runion, G.B., S.A. Prior, and H.A. Torbert. 2024. Belowground response of a bahiagrass pasture to long-term elevated [CO2] and soil fertility management. Plants 13, 485. https://doi.org/10.3390/ plants13040485.
  31. Kichler, C.M., T. Kornecki, H.A. Torbert, D.B. Watts and R. Prasad. 2024. Cover crop termination methods and custom residue manager effects on collard production. Agronomy 13, 2595. https://doi.org/10.3390/agronomy13102595.
  32. Escobar C., D.B. Watts, H.A. Torbert, M.A. Bailey, J.T. Krehling, D. Landers, A.P. Jackson, M. Gilpin, K. Still, L.R. Munoz, L. Orellana, Y. Adhikari, K.S. Macklin, and B. Baker-Cook. 2024. Evaluation of the impact of Gypsum as a Novel Bedding Material on Broiler Performance, Foot Pad Health, and Fear Response. Poultry Science 103:103676. https://doi.org/10.1016/j.psj.2024.103676.
  33. Watts, D.B., Z. He, X. Yin, H.A. Torbert, Z. Senwo, H. Tewolde. 2024. Long-term cropping management practices affect the biochemical properties of an Alabama Ultisol. Soil Systems 8, https://doi.org/10.3390/soilsystems8020041.
  34. Kavetskiy, A., G. Yakubova, S.A. Prior, and H.A. Torbert. 2024. Carbon analysis of large soil samples using the tagged neutron method: Accounting for radiation attenuation. Applied Radiation and Isotope. 209:111332. https://doi.org/10.1016/j.apradiso.2024.111332.
  35. Biswas, B., M. Ammar, S. Adhikari, Baltrusaitis, H. Jahromi, H.A. Torbert, J. Linhoss, and J. Lamba. 2024. Magnesium doped biochar for simultaneous adsorption of phosphate and nitrogen ions from aqueous solution. Chemosphere https://doi.org/10.1016/j.chemosphere.2024.142130.
  36. Chakraborty, D., R. Prasad, D.B. Watts, and H.A. Torbert. 2024. Distribution of phosphorus forms in soil amended with poultry litter of different ages and application rates: Agronomic and environmental perspectives. Soil Sci. Soc. Amer. J. https://DOI: 10.1002/saj2.20781.
  37. Kumar, R., J. Lamba, S. Adhikari, Kasera, and H.A. Torbert. 2025. Influence of iron-modified biochar on phosphate transport and deposition in saturated porous media under varying pH, ionic strength, phosphate concentrations, and biochar Dosage. Chemosphere 370. https://doi.org/10.1016/j.chemosphere.2024.143932.
  38. Lindquist, A., K. Kent, J. Pickens, P. Bartley, D.B. Watts, and H.A. Torbert. 2025. Nutrient Competitive Effects in Chrysanthemum Amended with Flue Gas Desulfurization Gypsum. HortScience 60(1):146–151. https://doi.org/10.21273/HORTSCI17998-24.
  39. Yakubova, G., A. Kavetskiy, S.A. Prior, H.A. Torbert. 2025. Measuring and mapping moisture content in agricultural fields by neutron gamma analysis. Soil Till Res. 248 https://doi.org/1016/j.still.2024.106444.
  40. Hennessey, A.V., M.B. McDonald, P.P. Johnson, M.F. Gladfelter, K.L. Merrill, S.E. Tenison, S.S. Ganegoda, T.C. Hoang, H.A. Torbert, B.H. Beck, and A.E. Wilson. 2025. Evaluating the tolerance of harmful algal blooms to copper. Environ Pollution 368:125691, https://doi.org/10.1016/j.envpol.2025.125691.
  41. Bhatta, A., R. Prasad, D. Chakraborty, D.B.G Watts, and H.A. Torbert. 2025. Phosphorus Loss in Surface Runoff from Soils with Different Soil Test Phosphorus Ratings. Agroecosystems, Geosciences & Environment. DOI: 10.1002/agg2.70099.

Patents

  1. Kornecki, T.S., H.A. Torbert, S.A. Prior. July 8, 2014. Cover Crop Residue Manager. DN: 0024.11; SN: 13/048,362; Patent No.: 8,770,119.
  2. Torbert, H.A., D.B. Watts, J.W., Kloepper, P. Calvo, and R. Ames. Feb. 23, 2016. Methods of reducing nitrous oxide emissions from a plant growth substrate.  Patent No.: US 9,266,786 B2.
  3. Torbert, H.A., A. Kavetskiy, G.N. Yakubova, and S.A. Prior. Oct. 29, 2019.  Method and Systems for non-invasive measurement of soil Chlorine and/or nitrogen content and for detecting sub-surface chlorine or nitrogen-containing objects. DN: 0112.15 SN: 15/495,565; Patent No.: 10,458,930 B2.
  4. Torbert, H.A., A. Kavetskiy, G.N. Yakubova, and S.A. Prior. Aug. 25, 2020. Method and Systems for non-invasive measurement of soil chlorine and/or nitrogen content and for detecting sub-surface chlorine or nitrogen-containing objects. (Continuation) Patent No.: 10,753,891 DN: 0125.19 SN: 16/552,238.
  5. Chin, B.A., H.A. Torbert, G.N. Yakubova, A. Kavetskiy, and N. Sargsyan. July 26, 2022. Scanning Mode Application of Neutron-induced Gamma Analysis for Soil Carbon Mapping. Patent No.: 11,397,277 B2.
  6. Torbert, H.A., A. Kavetskiy, G.N. Yakubova, and S.A. Prior. Aug. 2, 2022. System and method of using energy correlated timing spectra to locate subsurface objects. Patent No.: 11,402,338 B2.
  7. Chin, B.A., H.A. Torbert, G.N. Yakubova, A. Kavetskiy, and N. Sargsyan. July 9, 2024. Scanning Mode Application of Neutron-induced Gamma Analysis for Soil Carbon Mapping: Continuation. U.S. Patent Application (Continuation) Patent No.: US 12,031,928 B2.
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