Profile

Google Scholar

Education

• Jan 2017 – Aug 2020
  Ph.D. Soil Sciences: University of Tennessee, Knoxville.
• Jan 2015 – Dec 2016
  M.S. Agriculture Regulation: University of Arkansas at Pine Bluff.
• Aug 2010 – July 2014
  B.Sc. Agriculture (Honors’): Punjab Agricultural University, India.

Publications

• Ramírez, P.B., S. Singh, S. Machado, R. Matamala, S. Singh, and Francisco Calderon. 2026. While legume-based rotation influences the chemical composition of mineral-associated organic matter, tillage has little effect on its persistence. Soil & Tillage Research 258 (2026) 107014.
• Mahato, G., R. Plunkett, S. Singh, J. Barroso, S. Machado, G. Namdar, R. Graebner, C.B. Adams, C. Weinke, N. Durfee, F. Calderon, and C. Hagerty. 2025. Short-Term Effects of Cover Crop Rotation on Soilborne Pathogens of Winter Wheat in Traditional Crop-Fallow Systems. PhytoFrontiers e-ISSN:2690-5442.
• Stubbs LR, Singh S, Wysocki D, Heineck GC, Neely HL and Singh S (2025) Improving sustainability of inland Pacific Northwest dryland agriculture systems with pea-canola intercropping: a review. Front. Sustain. Food Syst. 9:1639908. doi: 10.3389/fsufs.2025.1639908
• Ramírez, P.B., Calderón, F., Singh, S., and Machado, S. 2025. Legume-based rotation enhance long-term soil carbon storage in eastern Oregon dryland wheat systems. Sci Rep 15, 13842.
• Barroso, J., Reardon, C.L., Singh, S., Machado, S., Gourlie, J.A., Namdar, G.F., Oreja, F.H., Pritchett, L.C., Kriete, L., Calderon, F.J., Berry, P.A., McGee, R.J., Durfee, N., Adams, C.B., and Hagerty, C.H. 2025. Biomass production, weed suppression, and soil water use of cover crops in dryland wheat production systems. Agronomy Journal 117:e70053.
• Singh, S., Singh, S., Schillinger, W.F., Griffin-LaHue, D., and Neely, H. 2024. Biosolids’ legacy benefits persist even 7 years after the application in a dryland wheat-fallow cropping system. Soil Use and Management 40:e13163.
• Singh, S., Singh. S., Schillinger, W.F., Neely, H., Cappellazzi, S.B., and Norris, C. 2024. Does increased cropping intensity translate into better soil health in dryland wheat systems? Applied Soil Ecology Volume 204, 105728.
• Singh, S., Singh, S., Machado, S., Lukas, S., Calderon, F., Cappellazzi, S. 2023. Evaluating common soil health tests for dryland wheat systems of inland Pacific Northwest.  J Soils Sediments doi:10.1007/s11368-023-03697-3
• Singh, S., Singh, S., Lukas, S., Machado, S., Nouri, A., Francisco, C., Rieke, E., and Cappellazzi, S. Long-term agro-management strategies shape soil bacterial community structure in dryland wheat systems. Nature Scientific Report 13, 13929 (2023).
• Singh, S., Jagadamma, S., Yoder, D., Yin, X., and Walker, F. 2023. A weighted soil heath index approach for refined assessment of soil health in cropping systems. Frontier in Soil Science. 3:1118526. doi: 10.3389/fsoil.2023.1118526
• Ramírez, P. B., Machado, S., Singh, S., Plunkett, R., and Calderon, F.J. 2023. Addressing the effects of soil organic carbon on water retention in US Pacific Northwest wheat–soil systems. Frontier in Soil Science. 3:1233886. doi: 10.3389/fsoil.2023.1233886
• Singh, A.K., Singh, J.B., Singh, R., Kantwa, S.R., Jha, P.K., Ahamad, S., Singh, A., Ghosh, A., Prasad, M., Singh, S., et al. 2023. Understanding Soil Carbon and Phosphorus Dynamics under Grass-Legume Intercropping in a Semi-Arid Region. Agronomy 13, 1692.
• Yadav, R.K., Purakayastha, T.J., Kumar, D., Jha, P.K., Mahala, D.M., Yadav, D.K., Khan, M.A., Singh, S., Singh, S., and Vara Prasad, P.V. 2023. Long-term impact of manuring on soil organic matter quality indicators under field cropping systems. Frontier in Environmental Science. 11:1116930. doi: 10.3389/fenvs.2023.1116930
• Satpathi, A., Setiya, P., Das, B., Nain, A. S., Jha, P. K., Singh, S., and Singh, S. 2023. Comparative analysis of statistical and machine learning techniques for rice yield forecasting for Chhattisgarh, India. Sustainability, 15 (3), 2786.
• Kumar, D., Purakayastha, T.J., Das, R., Yadav, R.K., Shivay, Y.S., Jha, P.K., Singh, S., Aditi, K. and Prasad, P.V. 2023. Long-Term Effects of Organic Amendments on Carbon Stability in Clay–Organic Complex and Its Role in Soil Aggregation. Agronomy, 13(1) 39.
• Singh, S., Jagadamma, S., Walker, F., Yin, X., and Yoder, D. 2022. Cropping system management responses to Cornell and Alabama soil health assessment methods in the southeastern United States. Soil Science Society of America Journal. 86 (1):106-117.
• Yoder, D., Jagadamma, S., Singh, S., Nouri, A., Xu, S., Saha, D., Schaeffer, S., Adotey, N., Walker, F., Lee, J., and Budipradigdo, M. 2022. Soil health: meaning, measurement, and value through a critical zone lens. Journal of Soil and Water Conservation. 77 (1) 88-99.
• Awale, R., Singh, S., and Machado, S. 2022. Soil chemical properties and wheat yields under different tillage and nitrogen rates in eastern Oregon. Agrosystems, Geosciences & Environment, 5, e20272.
• Nouri, A., Singh, S., Singh, S., Lukas, S., and Machado, S. 2022. When does cover crop reduce nitrate leaching? a global meta-analysis. Global Change Biology, 28:4736–4749.
• Singh, S., Hagerty, C. H., Reardon, C., Machado, S., Gourlie, J., Pritchett, L. C., Kriete, L. R., Harrison, K. C., Umbarger, S. K., and Barroso, J. 2022. Weed suppression using cover and alternative crops in dryland wheat-fallow systems of eastern Oregon. (Accepted in Spanish Weed Science conference).
• Korav, S., Rajanna, G. A., Yadav, D. B., Paramesha, V., Mehta, C. M., Jha, P. K., and Singh, S. 2022. Mechanized crop residue management impacts on rice-wheat cropping system of Indo-Gangetic plains- a review. Sustainability, 14 (23), 15641.
• Xu, S., Jagadamma, S, Ashworth, A., Singh, S., Owens P., and Moore, P. 2021. Long-term effects of pasture management and fenced riparian buffers on soil organic carbon content and aggregation. Geoderma, 382:114666.
• Singh, S., Jagadamma, S., Walker, F., Yin, X., and Yoder, D. 2020. Agroecosystem management responses to Haney soil health test in the southeastern United States. Soil science society of America Journal. 84 (5), 1705-1721.
• Singh S., Nouri A., Singh, S., Anapalli, S., Lee, J., Arelli, P., and Jagadamma S. 2020. Soil organic carbon and aggregation in response to thirty-nine years of tillage management in the southeastern US. Soil and tillage research, 197, 104523.
• Singh, S., Savoy, H., Yin, X., Schneider, L., and Jagadamma, S. 2019. Phosphorus and Potassium Fertilizer Rate Verification for a Corn–Wheat–Soybean Rotation System in Tennessee. Agronomy Journal, 111, 2060-2068.
• Chu, M., Singh, S., Walker, F., Eash, N., Buschermohle, M., Duncan, L., and Jagadamma, S. 2019. Soil health and soil fertility assessment by the Haney soil health test in an agricultural soil in west Tennessee. Communications in Soil Science and Plant Analysis, 50(9), 1123-1131.

Extension and Outreach

• Barroso, J., C.B. Adams, N. Durfee, S. Singh, C.H. Hagerty, S. Machado, J.A. Gourlie, G.F. Namdar, F.H. Oreja, L.C. Pritchett, L. Kriete, F.J. Calderon, and C.L. Reardon. 2025. Cover Crop Performance in Dryland Wheat Production Systems of the Pacific Northwest. Crop & Soils, Volume 58, Issue 10.
• Singh, S.*, Singh, S., Schillinger, W., Griffin-LaHue, D., and Neely, H. 2025. Tracking Biosolids: Long-Term Agronomic Impacts in Dryland Wheat Systems. Wheat Life Magazine, Jan 2025 issue, pg. 41-43.
• Ramirez, P.B., R. Calderon, S. Singh, and S. Machado. 2025. Growing Spring Peas to Increase Soil Organic Carbon in Eastern Oregon’s Dryland Wheat Systems. Crop & Soils, Volume 58, Issue 8.
• Singh, S.*, Machado, S., Calderon, F., Wieme, R., and Plunkett, R. 2025. Optimizing soil pH: Lessons from first year of on-farm trials in Walla Walla 2023-24. 2025 Dryland Field Day Abstract Book: Highlights of Research Progress.
• Singh, S.*, Singh, S., and Paulitz, T. 2025. CRP to Cropland and Back: Tracking Soil Health Through CRP Transitions in Dryland. 2025 Dryland Field Day Abstract Book: Highlights of Research Progress.
• Amissah, S., Singh, S.*, Singh, S., and Schillinger, W. 2025. Does Spring Wheat yield better after Winter Wheat or Winter Pea in the Drylands? 2025 Dryland Field Day Abstract Book: Highlights of Research Progress.
• Craine, W., and Singh, S.* 2025. Pealina: Investigating the intercrop potential of (winter) camelina and pea. 2025 Dryland Field Day Abstract Book: Highlights of Research Progress.
• Paiboonvorachat, C., Singh, S.*, Schillinger, W., and Sankaran, S. 2025. Advancing Dryland Spring Wheat Yield Prediction Using High-Resolution Satellite Imagery and Weather Data Using Long-Term Trial. 2025 Dryland Field Day Abstract Book: Highlights of Research Progress.
• Stubbs, L., Singh, S., Singh, S.*, Wysocki, D., Heineck, G., and Neely, H. 2025. Optimizing Seed and Nitrogen Rates for Pea and Canola Intercropping in the inland Pacific Northwest. 2025 Dryland Field Day Abstract Book: Highlights of Research Progress.
• Bimochana, G. C., Schroeder, K., Singh, S.*, Uhlenkott, J., Horsch, C., and Khadka, K. 2025. Yield Performance and Stability of Spring Canola Cultivars under Acidic Soil Conditions. 2025 Dryland Field Day Abstract Book: Highlights of Research Progress.
• Mahato, G., Adams, C., Plunkett, R., Singh, S.*, Barroso, J., Machado, M., Namdar, G., Graebner, R., Durfee, N., Calderon, F., Reardon, C., and Hagerty, C. 2025. Short-Term Effects of Cover Crops on Winter Wheat Yield and Protein Content in Dryland Cropping System. 2025 Dryland Field Day Abstract Book: Highlights of Research Progress.
• Deepanjan Mridha, D., Antonangelo, J., Lamsal, B., Basil, C., Singh, S., and Singh, S.*. 2025. Predicting soil available nutrients using portable XRF (pXRF) technology in dryland soils from the inland Pacific Northwest. 2025 Dryland Field Day Abstract Book: Highlights of Research Progress.
• Yates. Q., Singh, S., Heathman, A., and Singh, S. 2025. Living Mulch and Grazing Techniques to Improve Soil Health and Weed Control for Farmers Transitioning to Organic Farming Across Climatic Zones. 2025 Dryland Field Day Abstract Book: Highlights of Research Progress.
• Singh, S., Singh, S., Schillinger, B., Griffin-LaHue, D., and Neely H. 2024. Biosolids in the Dryland Pacific Northwest Seven Years After Application. Crops and Soils Magazine; November-December issue.
• Singh, S., Singh, S., Antonangelo, J., Neely, H., and Koenig, R. 2024. Survey for Soil and Plant Micronutrients in Dryland Winter Canola. Dryland Field Day Abstracts: Highlights of Research Progress 2024.
• Mahato, G., Plunkett, R., Singh, S., Barroso, J., Machado, S., Namdar, G., Graebner, R., Adams, C., Camara, C., Durfee, N., Calderon, F., Reardon, C.L., and Hagerty, C. 2024. Impact of Cover Cropping on Soilborne Diseases of Winter Wheat. Dryland Field Day Abstracts: Highlights of Research Progress 2024.
• Plunkett, R., Mahato, G., Barroso, J., Machado, S., Namdar, G., Graebner, R., Ramirez, P.B., Smiley, R.W., Adams, C., Camara, C., Durfee, N., Singh, S., Calderon, F., Reardon, C.L., and Hagerty, C. 2024. Soil Health and Cover Crop Influence on Nematodes in Dryland Wheat Cropping Systems of Eastern Oregon. Dryland Field Day Abstracts: Highlights of Research Progress 2024.
• Singh., S., Singh., S., and Schillinger, W. 2024. Biosolids Legacy Effects on Soil Health, Nutrient Availability, and Crop Yields 7 Years after the Applications in Dryland Region. Dryland Field Day Abstracts: Highlights of Research Progress 2024.
• Singh, S.*, Machado, S., Ramirez, P., Kriete, L., Plunkett, R., Pritchett, L., and Calderon, F. 2023. Sampling Strategies and Nutrient Stratification Control Soil Health Indicator Responses in Dryland Wheat Systems. Dryland Field Day Abstracts: Highlights of Research Progress 2023.
• Ramírez, P.*, Machado, S., Plunkett, R., Singh, S., Pritchett, L., Kriete, L., Larson, D., and Calderón, F. 2023. Soil Spectroscopy: An Alternative Method for Monitoring Soil Quality in Dryland Wheat Systems of Eastern Oregon. Dryland Field Day Abstracts: Highlights of Research Progress 2023.
• Singh, S.*, Machado, S., and Francisco, C. 2022. Long-term experiments at the Columbia Basin Agricultural Research Center. Field day June 14-15, Pendleton, OR.
• Ramirez, P.*, Plunkett, R., Singh, S., Machado, S., and Francisco, C. 2022. Long-term effects of N fertilizer, manure, and residue burning practices on soil carbon storage. Field day June 14-15, Pendleton, OR.
• Singh, S., Awale, R., and Machado, S. 2022. Moldboard Plowing in Wheat–Fallow Systems of the Pacific Northwest: Effect on Yields and Organic Matter. Crops and Soils Magazine; May-June issue.
• Singh, S., Barroso, J., Calderon, F. J., Gourlie, A., Graebner, R. C., Harrison, K. C., Hunt, M. P., Klarer, E. R., Kriete, L. R., Machado, S., McGee, R. J., Pritchett, L. C., Reardon, C. L., Umbarger, S. K., Wood, D.I., and Hagerty, C. H. 2022. Weed and soil moisture dynamics under cover and alternative crops in dryland wheat systems: Insights from one year of Resilient Dryland Farming Alliance. Dryland Field Day Abstracts: Highlights of Research Progress 2022 (pdf).
• Singh, S., Barroso, J., Calderon, F. J., Gourlie, A., Graebner, R. C., Harrison, K. C., Hunt, M. P., Klarer, E. R., Kriete, L. R., Machado, S., McGee, R. J., Pritchett, L. C., Reardon, C. L., Umbarger, S. K., Wood, Francisco, C., Machado, S., Plunkett, R., Pritchett, L., Ramirez, P., and Singh, S. 2022. Crop residue management affects soil health and wheat yields. Dryland Field Day Abstracts: Highlights of Research Progress 2022 (pdf).
• Singh, S., Machado, S., Nouri, A., Singh, S., Lukas, S. B., and Cappellazzi, S. B. 2022. Evaluating Soil Health Assessment Methods for Dryland Wheat Systems of Eastern Oregon. Dryland Field Day Abstracts: Highlights of Research Progress 2022 (pdf).
• Singh, S., Singh, S., Machado, S., Nouri, A., Lukas, S. B., Rieke, E. R., and Cappellazzi, S. B. 2022. Long-term agromanagement alters soil microbial activity and community structure in dryland wheat systems of eastern Oregon. Dryland Field Day Abstracts: Highlights of Research Progress 2022. (pdf)
• Singh, S., Barroso, J., Francisco, C., Christina, H., Catherine, R., and Machado, S. 2021. Designing cover and alternative crops for dryland cropping systems in eastern Oregon. Oregon State University Extension Service.
• Singh, S., Barroso, J., Calderon, F. J., Gourlie, A., Graebner, R. C., Harrison, K. C., Hunt, M. P., Klarer, E. R., Kriete, L. R., Machado, S., McGee, R. J., Pritchett, L. C., Reardon, C. L., Umbarger, S. K., Wood, D. I., and Hagerty, C. H. 2021. Resilient dryland farming alliance (RDFA) 2020 – 2021 annual report: alternative crop trial. Oregon State University Extension Service.
• Singh, S., Barroso, J., Calderon, F. J., Gourlie, A., Graebner, R. C., Harrison, K. C., Hunt, M. P., Klarer, E. R., Kriete, L. R., Machado, S., McGee, R. J., Pritchett, L. C., Reardon, C. L., Umbarger, S. K., Wood, D. I., and Hagerty, C. H. 2https://extension.oregonstate.edu/sites/default/files/documents/12596/2021rdfareportaltcropfinal.pdf021. Resilient dryland farming alliance (RDFA) 2020 – 2021 annual report: Cover crop trial. Oregon State University Extension Service.
• Singh, S., Barroso, J., Francisco, C., Christina, H., Catherine, R., and Machado, S. Designing cover and alternative crops for dryland cropping systems in eastern Oregon. 2021. Dryland Field Day Abstracts: Highlights of Research Progress 2021.
• Jagadamma, S., Singh, S., DeBruyn, J., Adotey, N., and Walker, F. What does soil health mean for Tennessee farmers? (pdf) 2021. University of Tennessee Extension.
• Jagadamma, S.*, and Singh, S. 2020. Soil Health Tests: Challenges and Opportunities for Tennessee. 31^st Milan no-till crop production field day (Oral). July 23, 2020. Milan, TN.
• Singh, S.*, Savoy, H., Jagadamma, S., Yin, X. 2018. Verification of University of Tennessee’s P and K fertilizer recommendation for row crops. 30^th Milan no-till crop production field day (Oral). July 26, 2018. Milan, TN.