
NC1182: Management and Environmental Factors Affecting Nitrogen Cycling and Use Efficiency in Forage-Based Livestock Production Systems
(Multistate Research Project)
Status: Active
SAES-422 Reports
03/11/2026
Nave, R.L.G., O.G. Almeida *, J.J. Tucker, and Xiong, Y.V*. 2024. Restoring ecosystems in the Southeastern U.S. by interseeding alfalfa in existing cool-season grass pastures. Grassland Science. doi.org/10.1111/grs.12434.
Corbin, M.D.*, R.L.G. Nave, H. Naumann, G. E. Bates, C. Boyer, and O.G. Almeida*. 2024. Inclusion of cool and warm-season species to tall fescue swards for increased productivity. Agronomy Journal. doi.org/10.1002/agj2.21690
Corbin, M.D.*, R.L.G. Nave, H. Naumann, G. E. Bates, C. Boyer, and O.G. Almeida*. 2024. Does adding legumes to tall fescue pastures before stockpiling improve productivity and animal performance? Agronomy Journal. doi.org/10.1002/agj2.21676
Berry, M., P. Keyser, H. Naumann, K. Coffey, A. Griffith, J. Klotz, E. Herring, S. L. Davies-Jenkins, H. Ji. 2025. A big bluestem and indiangrass complement enhances cattle productivity in tall fescue forage systems. Applied Animal Science. (In press).
Johnson, M.L.,C. E. Gruber, K. R. Vierck, S. Gadberry, K. Coffey, C. T. Shelton, R. C. Jones, G. Gourley, and J. Daniel Rivera. 2025. Effects of byproduct-based diets or grain-based diets on performance and carcass quality of beef steers finished on pasture. Applied Animal Science 41:465-472. https://doi.org/10.15232/aas.2025-02684.
Garcia, C. (postdoctoral fellow), Vieira-Filho, L., Sanchez, D., Zagato, L., Silva, L. Agronomic responses and botanical composition of warm-season annual forages managed under contrasting harvest strategies. Crop, Turf and Grass Management (accepted for publication)
Silva, L. 2025. Enhancing climate resilience of forage ecosystems through sustainable intensification and educational knowledge transfer in the Southeast USA. Crops. https://doi.org/10.3390/crops5040042 .
Miller, R. 2025. Less Leaching with Covers. Journal of Nutrient Management 6(3): 12-15.
https://jofnm.com/article-398-Less-leaching-with-covers.html
Proceedings and Scientific Abstracts
Furlan Junior, R., T. C. Mueller, L. E. Steckel, R.L.G. Nave, and B. Pedreira. 2024. Evaluating alfalfa establishment when controlling glyphosate-resistant Palmer Amaranth with soil fertility and herbicide application. Beef and Forage Center Annual Research Report.
Furlan Junior, R., T. C. Mueller, L. E. Steckel, R.L.G. Nave, and B. Pedreira. 2024. Bringing alfalfa back to Tennessee: Importance of fall weed control on spring forage accumulation. Beef and Forage Center Annual Research Report.
Almeida, O.G., R.L.G. Nave, M.D. Corbin, M.A.S. Malheiros, F. Nassar, V. Martinez, Y. Roberts, and R. C. Silva. 2024. Agronomic Responses in Tall Fescue Swards Mixed with Legume Species. International Annual Meetings ASA-CSSA-SSSA – San Antonio, TX.
Lima, C.E., Nassar, F.F., D. McIntosh, Reis, R.A., R.L.G. Nave, and B. Pedreira. 2024. Evaluating Azospirillum brasilense inoculation and nitrogen management on crabgrass. International Annual Meetings ASA-CSSA-SSSA – San Antonio/TX.
Malheiros, M.A.S.*, R.L.G. Nave, Nassar, F., and Dillard, S.L. 2024. Effects of the Application of Plant Growth Promoting Rhizobacteria in the Production of Bermudagrass (Cynodon Dactylon) in Tennessee, United States. International Annual Meetings ASA-CSSA-SSSA – San Antonio/TX.
Martinez, V., R.L.G. Nave, Almeida, O.G., V. R. Sykes, B. Pedreira, and C. Boyer. 2024. Optimizing organic corn production under different living mulch systems. International Annual Meetings ASA-CSSA-SSSA – San Antonio/TX.
Nassar, F.F., R.L.G. Nave, Dillard, S.L., B. Pedreira, Silva R.C., Malheiros, M.A.S., Martinez, V., Roberts, Y., and Almeida, O.G. 2024. Use of plant growing-promoting bacteria as an alternative fertilizer for bermudagrass. International Annual Meetings ASA-CSSA-SSSA – San Antonio/TX.
Roberts, Y.*, R.L.G. Nave, V. R. Sykes, K. J. Walters, A. P. Griffith, and Almeida, O.G. 2024. Management and Productivity of Corn and Alfalfa Intercropping Systems in the Southern U.S. International Annual Meetings ASA-CSSA-SSSA – San Antonio/TX.
Silva R.C., R.L.G. Nave, Dillard, S.L., B. Pedreira, Nassar, F.F., Malheiros, M.A.S., Martinez, V., Roberts, Y., and Almeida, O.G. 2024. Qualitative and productive effects of plant growth-promoting bacteria (PGPB) in tall fescue. International Annual Meetings ASA-CSSA-SSSA – San Antonio/TX.
Hewitt, K., R. Miller, and B. Miller. 2025. Cover crops and water quality: effects on nutrient leaching. International Annual Meetings ASA-CSSA-SSSA – Salt Lake City, UT.
Cheek, R. A., E. B. Kegley, K. P. Coffey, J. G. Powell, S. Gadberry, C. O. Lemley, N. Moss, C. Bright, J. L. Reynolds, A. Harness, C. R. Hopkins, B. P. Littlejohn. 2025. The effect of melatonin supplementation during mid-late gestation in dams grazing toxic, endophyte-infected tall fescue on stocker phase growth performance and feed efficiency of offspring. J. Anim. Sci. 103(Suppl. 3):302-303.DOI: 10.1093/jas/skaf300.353.
Stinfil, R., C. Nieman, and K. P. Coffey. 2025. Impacts of ground red clover on nutrient intake and digestibility in lambs fed with novel endophyte-infected fescue. J. Anim. Sci. 103(Supplement_3):620-621. DOI: 10.1093/jas/skaf300.702
Miller, R., K. Hewitt, and B. Miller. 2025. Impact of Cover Crops on Nutrient Leaching. Waste-to-Worth 2025 Proceedings: Advancing Sustainability in Animal Agriculture. April 7-11, 2025. Boise, ID. Livestock, Poultry, and Environmental Learning Community (LPELC). Available at: https://lpelc.org/the-effect-of-cover-crops-on-nutrient-leaching/
Cheek, R. A., E. B. Kegley, K. P. Coffey, J. G. Powell, S. Gadberry, C. O. Lemley, N. Moss, C. Bright, J. L. Reynolds, A. Harness, C. R. Hopkins, B. P. Littlejohn. 2025. The effect of melatonin supplementation during mid-late gestation in dams grazing toxic, endophyte-infected tall fescue on stocker phase growth performance and feed efficiency of offspring. J. Anim. Sci. 103(Suppl. 3):302-303.DOI: 10.1093/jas/skaf300.353.
Stinfil, R., C. Nieman, and K. P. Coffey. 2025. Impacts of ground red clover on nutrient intake and digestibility in lambs fed with novel endophyte-infected fescue. J. Anim. Sci. 103(Supplement_3):620-621. DOI: 10.1093/jas/skaf300.702
Extension Outputs
- Beem, G., B. Scott, J. Paling, and K. Cassida. 2025. Active soil carbon comparison among perennial forage species. UURAF. April 11, 2025, East Lansing, MI. Poster.
- Cassida, K. 2024. MSU Forage Connection. www.forage.msu.edu/ (Website)
- Cassida, KA. Optimizing Forage Quality in Hay and Haylage. MSU Extension Virtual Breakfast, Online May 1, 2025, URL https://www.canr.msu.edu/videos/optimizing-forage-quality-in-hay-haylage/ (WEBINAR/PODCAST)
- Kaatz, P., and K. Cassida. 2025. Optimizing Forage Quality is Topic for May 1 Virtual Breakfast Series. MSU Ag News. 4/23/25 (press release)
- Mar. 19, 2025. Maximizing Hay Forage Quality. Knutson Equipment Forage Harvester Conference, East Lansing, MI. (INVITED, 38 participants).
- Mar. 6, 2025. MSU Forage Research Update. Great Lakes Forage & Grazing Conference, St. Johns, MI. (89 participants)
- Mar. 5, 2025. Beem and Cassida. Soil Health Demonstration. PSM FFA Open House. East Lansing, MI. (30 participants)
- Feb. 7, 2025. MSU Extension Crop & Pest Management Update. Saginaw, MI. (~80 Participants)
- Jan. 10, 2025. MSU Alfalfa Research Update. MSU Extension Crop & Pest Management Update. Bad Axe, MI. (85 participants)
- Miller, R., K. Hewitt, and B. Miller. 2025. Mitigating leaching with inter-seeded cover crops. Northern Utah Soil Health Conference. Utah Conservation Districts. Logan, UT. Oct. 29-30, 2025. (INVITED Conference Presentation)
Abstracts
- Rodriguez, D. (graduate student), J. Adkison, K. Seavey, S. Giri, C. Garcia, M. Aguerre, L. Dillard, L. Silva. Agronomic and nutritive value responses of cool-season forage mixtures under rotational stocking.2025 Clemson University-CAT Agricultural Technology Spotlight Event. September 23, 2025. Clemson, SC.
- Garcia, C. (postdoc), Adkison, J., Zagato, L., Giri, S., Rodriguez, D., Silva, L. Nitrogen fertilization strategies responses on forage mass, nutritive value, and soil gas emissions of cool-season forage system. 2025 Clemson University-CAT Agricultural Technology Spotlight Event. September 23, 2025. Clemson, SC.
- Garcia, C. (postdoc), Silva, L., Vieira-Filho, L., Adkison, J., Agudelo, P. Impact of climate-smart practices on greenhouse gas emissions in South Carolina livestock operations. 2025 Southern Pasture & Forage Crop Improvement Conference. Corpus Christi, Texas. April, 2025.
Invited talks
- Silva, L.S. Clemson University forage-livestock systems research and Extension program update. 2025 South Carolina Forage and Grazing Lands Coalitions Annual Meeting. September 9th. Columbia, SC.
- Silva, L.S. Title: Understanding the alternatives and consequences of taking versus not taking action. Symposium “Building a resilient forage program for climate extremes”. 2025 American Dairy Science Association. June 22-25. Louisville, KY.
- Silva, L.S. Online in-service training: 2025 Building Resilience in Forage and Livestock Systems – Virtual Series – collaboration with the USDA Southern Climate Hub (Collaborators: Michael Gavazzi, Renai Nez, Ylexia Padilla). Link: https://www.eventbrite.com/e/building-resilience-in-forage-and-livestock-systems-virtual-series-tickets-1397042635129?aff=oddtdtcreator .
Book chapters
- Silva, L.S., Aguerre, Fischer, M., Marshall, M., Greene, J., Kirk, K., Scharko, P., Smith, N. 2025. Forage-related sections. Silva, L.S., (ed.). In: South Carolina Forages: Research-based concepts for forage management. August 2025. Partially funded by the South Carolina Sustainable Agriculture Research and Education (SARE).
- Barker, M. Chiavegato, B. Campbell and K. Verhoff, (2026) Advances in sustainable sheep pasture and grazing management, Ch 10 in “Advances in sheep production” Pp 237-254. Eds. Lesley Stubbings and Kate Phillips, BDS Publishing.
- David J. Barker, Marilia Chiavegato, and Michael Collins 2025. Forage Fertilization and Nutrient Management Chapter 13, in “Forages, Volume 1: An Introduction to Grassland Agriculture” Wiley