2010-2016 - B.S. in Agronomy, Federal Institute of Santa Catarina (Brazil) & Oregon State University

2016-2018 - M.S. in Soils and Plant Nutrition, University of Sao Paulo (Brazil)

2018-2020 - M.B.A., Agribusiness, University of Sao Paulo (Brazil)

2019-2023 - Ph.D. in Soil and Water Sciences, University of Florida

2023-2024 - Postdoc in Conservation Agronomy, Clemson University

2024-present: Assistant Professor and Soil Fertility Specialist - School of Plant, Environmental and Soil Sciences | Louisiana State University Agricultural Center, Baton Rouge, LA, United States.

2023-2024: Postdoctoral Fellow - Edisto Research and Education Center | Clemson University, Blackville, SC, United States.

2019-2023: Graduate Research Assistant, Range Cattle Research and Education Center | University of Florida, Ona, FL, United States.

2018-2019: Co-Managing Partner, Tapes Ranch (“Fazenda dos Tapes”), Sao Jose dos Ausentes, RS, Brazil.

2016-2018: Graduate Research Assistant, Soil Science Department | University of Sao Paulo, Piracicaba, SP, Brazil.

2016-2016: Research Assistant Intern, Agricultural Research and Rural Extension Company of Santa Catarina | Epagri, Itajai, SC, Brazil.

2014-2014: Research Assistant Intern, Eastern Oregon Agricultural Research Center | Oregon State University & U.S. Department of Agriculture, Burns, OR, United States.

Research:

1. Vieira-Filho, L.O., Silveira, M.L., Sanchez, J.M.D., Kohmann, M.M., & Ricken, E.C. (2025). Environmental impacts of land application of biosolids to perennial pastures. Journal of Environmental Quality, 54, 246-256. https://doi.org/10.1002/jeq2.20664

2. Vieira-Filho, L.O., Silveira, M.L., Kohmann, M.M., Sollenberger, L.E., Sanchez, J.M.D., Cardoso, A.S., & Ricken, E.C. (2024). Agronomic impacts of new regulations governing land application of Class B biosolids in Florida. Agronomy Journal, 116, 141-152. https://doi.org/10.1002/agj2.21510

3. Vieira-Filho, L.O., Silveira, M.L., Kohmann, M.M., Sales, C.A.R., Sollenberger, L.E., Bhadha, J.H., Strauss, S., & Moriel, P (2023). Water table effect on phosphorus solubility in biosolids-amended soils. Soil Science Society of America Journal, 87, 1191-1206. https://doi.org/10.1002/saj2.20568

4. Vieira-Filho, L.O., & Monteiro, F.A. (2022). Silicon improves photosynthetic activity and induces antioxidant enzyme activity in Tanzania Guinea grass under copper toxicity. Plant Stress, 3, 1-10. https://doi.org/10.1016/j.stress.2021.100045

5. Vieira Filho, L.O., & Monteiro, F.A. (2020). Silicon modulates copper absorption and increases yield of Tanzania guinea grass under copper toxicity. Environmental Science and Pollution Research, 27, 31221-31232. https://doi.org/10.1007/s11356-020-09337-4

6. Mendes, W.S., Vieira Filho, L.O., Pereira, N.A., Boechat, C.L., & Mielezrski, F. (2018). Phytosociology and behavior of weeds in maize as influenced by spatial arrangements. Journal of Agricultural Science, 10, 199-208. https://doi.org/10.5539/jas.v10n9p199

7. Schmidt, F., & Vieira Filho, L.O. (2017). Tolerance of Epagri's rice cultivars to salinity of irrigation water in the vegetative stage. Agropecuária catarinense, 30, 89-95. https://doi.org/10.52945/rac.v30i1.40

Extension:

1. Vieira, L. O., Tubana, B., Padgett, G.B., Moseley, D., Gravois, K., & Levy, R.J. (2025). Fertilizer recommendations for field crops in Louisiana: N-P-K-S. Louisiana State University Agricultural Center, P4004. Available at: Fertilizer Recommendations for Field Crops in Louisiana: N-P-K-S.

2. Vieira, L.O., & Castro, S.A.Q. (2025). Why soil organic matter matters? Louisiana State University Agricultural Center, P4007. Available at: Why Soil Organic Matter Matters.

3. Vieira, L.O., & Castro, S.A.Q. (2025). Strategies to increase organic matter in the soil. Louisiana State University Agricultural Center, P3998. Available at: Strategies To Increase Organic Matter in the Soil.

• Soil Biogeochemistry
• Mineral Plant Nutrition
• Water Quality
• Soil Nutrient Management

My current research and extension interests are soil fertility and health on specialty, field and forage crops. My focus will be on improving the delivery of soil fertility, soil health, and crop production best management practices (BMPs) to Louisiana stakeholders, including homeowners, producers, parish agents, crop consultants, and related specialty crop industries. I am also a Certified Crop Advisor (CCA-LA).

• Encompass Scholars Award (2023), American Society of Agronomy, Crop Science Society of America and Soil Science Society of America.
• 2nd Place Award Poster Presentation Competition (2023), UF/IFAS Range Cattle Research and Education Center Field Day.
• Victor W. Carlisle Fellowship Award (2022), Soil, Water, and Ecosystem Sciences Department, University of Florida.
• International Student Outstanding Achievement Award (2022), College of Agricultural and Life Sciences, University of Florida.
• Bridge Scholars Award (2022), American Society of Agronomy, Crop Science Society of America and Soil Science Society of America.
• Doris and Earl Lowe and Verna Lowe Scholarship Award (2022), College of Agricultural and Life Sciences, University of Florida.
• Dr. James Davidson Graduate Travel Scholarship Award (2022), College of Agricultural and Life Sciences, University of Florida.
• World Congress of Soil Science Fellowship Award (2022), Agronomic Science Foundation, Soil Science Society of America and U.S. Committee for Soil Science.
• William Robertson Fellowship Award (2021), Soil and Water Sciences Department, University of Florida.
• William C. and Bertha M. Cornett Scholarship Award (2021), College of Agricultural and Life Sciences, University of Florida.
• 2nd Place Award Poster Presentation Competition (2020), Soil & Water Management & Conservation Division, American Societies of Agronomy, Crop and Soil Sciences International Annual Meeting, USA.
• 3rd Place Award Poster Presentation Competition (2011), Food Production Technology Division, IV Scientific Production Journey of Professional and Technological Education in the Southern Region, Brazil.

Silva, L.S., Vieira-Filho, L.O., Smith, N., Hersom, M., Marshall, M.O., Aguerre, M., Garcia, L., DiLorenzo, N., Fischer, M., Thayer, A., Mickey, S., Kantrovich, A., Richards, S., & Burkett, K. (2024). Development of Educational Climate- Smart Agricultural Resources for Forage-Livestock Systems in South Carolina. Extension Risk Management Education Competitive Grants Program. US$ 74,869.

Mendes, W.S., Vieira-Filho, L.O., Elliot, K., & Yau, P. (2022). Integration of global soil spectral data into a low-cost visible-near-infrared spectroscopy sensor for sustainable agricultural analysis. Early Career Interdisciplinary Grant, British Society of Soil Science (presented at the 22nd World Congress of Soil Science). US$ 6,000.

Silveira, M.L., Vieira-Filho, L.O., & Kohmann, M.M. (2019). Phosphorous budget for cow-calf operations in the state of Florida. Florida Cattle Enhancement Board Grant. US$ 18,000

Soil Fertility Extension Program
The Soil Fertility Extension Program at the LSU AgCenter is dedicated to enhancing agricultural productivity and sustainability through science-based soil management practices.