I. Alejandra Sierra

Assistant Professor of Turfgrass Agronomy
Horticulture Program Team, Plant and Environmental Sciences Department, PeeDee Research and Education Center

Office: 2200 Pocket Rd, Florence, SC
Phone: 954-213-2382

Email: isierra@clemson.edu

Educational Background

Ph.D. Turfgrass Science
University of Florida

M.S. Horticultural Sciences
University of Florida

B.S. Agronomy
Zamorano University

Publications

Sierra Augustinus, I. A., Unruh, J. B., Kenworthy, K. E., Lindsey, A. J., & Schiavon, M. (2026). St. Augustinegrass can sustain performance under water and fertilizer restrictions in subtropical environments. Agronomy Journal, 118, e70325.https://doi.org/10.1002/agj2.70325

Ojeokun, O., Fry, J., Todd, T., Martin, C., Chandra, A., Xiang, M., Patton, A., Amgain, N., Sierra, A., Schiavon, M., Kenworthy, K., Kruse, J., Braun, R., & Kennelly, M. (2025). Thatch accumulation in zoysiagrass genotypes across the US transition zone and southern regions. HortTechnology, 35(4), 502-512. https://doi.org/10.21273/HORTTECH05649-25

Petelewicz, P., Joseph, M. M., Sierra Augustinus, I. A., Arevalo Alvarenga, A. F., McLoughlin, P. H., Gallo, S. A., MacDonald, G. E., & Schiavon, M. (2025). Combined impact of aerification, postemergence herbicides, and post-herbicide irrigation on goosegrass control in bermudagrass putting greens. Agronomy Journal, 117, e21734. https://doi.org/10.1002/agj2.21734

Sierra Augustinus, I. A., Arevalo Alvarenga, A. F., & Schiavon, M. (2024). Bermudagrass fairway responses to various combinations of a soil surfactant and nitrogen. Agronomy Journal, 116(6), 2657-2669. https://doi.org/10.1002/agj2.21662

Arevalo Alvarenga, A. F., Barbosa, M., Sierra Augustinus, I. A., Stingl, U., & Schiavon, M. (2024). Management practices alter endophytic diazotrophic communities in CitraBlue St. Augustinegrass. Crop Science, 65(1), e21372. https://doi.org/10.1002/csc2.21372

McLoughlin, P.H., Sierra Augustinus, I.A., Arevalo Alvarenga, A.F., & Schiavon, M. (2024). Risk of nutrient leaching following over-irrigation of two warm-season turfgrasses with recycled water. Crop Science, 65(1), e21341. https://doi.org/10.1002/csc2.21341

Peppers, J. M., McElroy, J. S., Orlinski, P. M., Baird, J., Petelewicz, P., Joseph, M. M., Sierra Augustinus, I. A., & Schiavon, M & Askew, S. D. (2024). Methiozolin rate and application frequency influence goosegrass (Eleusine indica) and smooth crabgrass (Digitaria ischaemum) control in turf. Weed Technology, 38, e24. https://doi.org/10.1017/wet.2024.5

Sierra Augustinus, I. A., Boeri, P. A., Arevalo Alvarenga, A. F., Unruh, J. B., & Schiavon, M. (2024). Nutrition of Florida lawns when summer fertilizer blackout period is enforced. Crop, Forage & Turfgrass Management, 10(1), e20265. https://doi.org/10.1002/cft2.20265

Sierra Augustinus, I. A., McLoughlin, P. H., Alvarenga, A. F. A., Unruh, J. B., & Schiavon, M. (2023). Evaluation of different aerification methods for ultradwarf hybrid bermudagrass putting greens. HortTechnology, 33(4), 333-341. https://doi.org/10.21273/HORTTECH05213-23

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