Profile

Curriculum vitae (pdf)

Google Scholar

Education

• 2017-2020 Ph.D., Environmental and Soil Science
  University of Tennessee, Knoxville, TN
• 2015-2016 M.S., Plant Science
  South Dakota State University, Brookings, SD
• 2010-2014 B.S., Agriculture (honors)
  Punjab Agricultural University, Ludhiana, India

Research Interests

• Soil carbon and greenhouse gas emissions
• Soil nutrient management and soil health
• Water quality management and water use efficiency
• Soil biogeochemistry and ecology
• Agroecosystem sustainability

Publications

• Machado, S., Ramirez, P. B., and Singh, S. Biochar effects on soil organic carbon sequestration and acidity amelioration persist after ten years. 2026. Frontiers in Sustainable Food Systems, 10, 1638625.
• 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.
• 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
• Singh, S., S.B. Lukas, A. Retano, and D.R. Bryla. 2025. Evaluating locally available organic amendments to enhance soil health indicators for highbush blueberry production east of the Cascades in the U.S. Pacific Northwest. Sci Rep 15, 20933
• 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., 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., 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. Sci Rep 13, 13929 (2023).
• Singh, S., Brewer, L., and Lukas, S. B. 2023. Understanding Soil Health and Biota for Farms and Gardens. Oregon State University Extension Catalogue EM 9409.
• Singh, S., Mayes, M. A., Kivlin, S. N., & Jagadamma, S. 2023. How the Birch effect differs in mechanisms and magnitudes due to soil texture. Soil Biology and Biochemistry, 179, 108973.
• Lukas, S., Singh, S., DeVetter, L. W., & Davenport, J. R. 2022. Leaf Tissue Macronutrient Standards for Northern Highbush Blueberry Grown in Contrasting Environments. Plants, 11(23), 3376.
• Nouri, A., Singh, S., Singh, S., Lukas, S., and Machado, S. 2022. When do cover crops reduce nitrate leaching? A global meta-analysis. Global Change Biology 28(15), 4736-4749.
• Singh, S., Mayes, M. A., Shekoofa, A., Kivlin, S. N., Bansal, S., and Jagadamma, S. 2021. Soil organic carbon cycling in response to simulated soil moisture variation under field conditions. Nature-Scientific Reports 11, 1-13.
• Liang, J., Wang, G., Singh, S., Jagadamma, S., Gu, L., Schadt, C. W., Wood, J. D., and Mayes, M. A. 2021. Intensified soil moisture extremes decrease soil carbon decomposition: A mechanistic modeling analysis. Journal of Geophysical Research: Biogeosciences 126(8), e2021JG006392.
• Singh, S., Jagadamma, S., Liang, J., Kivlin, S. N., Wood, J. D., Wang, G., Schadt, C. W., DuPont, J. I., Gowda, P., and Mayes, M. A. 2021. Differential organic carbon mineralization responses to soil moisture in three different soil orders under mixed forested systems. Frontiers in Environmental Science 9, 223.
• Abagandura, G. O., Sekaran, U., Singh, S., Singh, J., Ibrahim, M. A., Subramanian, S., Owens, V. N., and Kumar, S. 2020. Intercropping Kura clover with Prairie Cordgrass mitigates soil greenhouse gas fluxes. Nature-Scientific Reports 10, 7334.
• Tobin, C., Singh, S., Kumar, S., Wang, T., and Sexton, P. 2020. Demonstrating short-term impacts of grazing and cover crops on soil health and economic benefits in an integrated Crop-Livestock system in South Dakota. Open Journal of Soil Science 10(03), p.109.
• 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, p.104523.
• Singh, S., Yan, S., Sorochan, J., Stier, J., Mayes, M., Zhuang, J., and Jagadamma, S. 2019. Soil carbon accumulation and nutrient availability in managed and unmanaged eco-systems of east Tennessee. Soil Science Society of America Journal 83(2), 458-465.
• Maiga, A., Alhameid, A., Singh, S., Kumar, S., Osborne, S., Sexton, P., and Malo, D. 2019. Responses of soil organic carbon, aggregate stability, carbon and nitrogen fractions to 15 and 24 years of no-till diversified crop rotations. Soil Research 57(2), 149-157.
• Subedi, K., Singh, S., Wegner, B., Kumar, S., Perez-Gutierrez, J., Osborne, S., Nleya, T., Guzman, J., and Rohila, J. 2019. Cover crops and returning residue impact on soil organic carbon, bulk density, penetration resistance, water retention, infiltration, and soybean yield. Agronomy Journal 111, 99-108.
• Wegner. B., Subedi, K., Singh, S., Lai, L., Abagandura, G., Kumar, S., Osborne, S., Lehman, M., and Jagadamma, S. 2018. Response of soil surface greenhouse gas fluxes to crop residue removal and cover crops under a corn-soybean rotation. Journal of Environmental Quality 47(5), 1146-1154.
• Singh, S., Brandenburg, N., Ahiablame, L., Gonzalez, A., Kjaersgaard, J., Trooien, T., and Kumar, S. 2017. Response of winter manure application on surface runoff water quantity and quality from small watersheds in South Dakota. Water, Air and Soil Pollution 228(10), 389-399.
• Ibrahim, M., Hong, C.O., Singh, S., Kumar, S., Osborne, S., and Owens, V. 2017. Switchgrass biomass quality as affected by nitrogen rates, harvest time, and storage. Agronomy Journal 109 (1), 1-11.
• Emery, I., Mbonimpa, E., Kumar, S., Muthukumarappan, K., Wei, L., Jahandideh, A., Singh, S., and Owens, V. 2017. Life cycle assessment of drop-in biofuels from prairie cordgrass. ASABE Annual International meeting paper.