Specialty: Soil Management
The overall research focus concerns the long-term consequences of tillage practices and cropping systems on soil chemical, physical, and biological properties and their relationship to crop growth and development. Research efforts have emphasized a multi-disciplinary approach in order to assess some of the inherent soil-plant-water relationships associated with these systems.
Current research areas include nutrient cycling in cover crop based production systems; soil quality indices as influenced by tillage/cropping system; and nutrient dynamics in organic production.
- Soil health indicators do not differentiate among agronomic management systems in North Carolina soils, Soil Science Society of America Journal (2017)
- Nitrogen recovery by cover crops in relation to time of planting and growth termination, Journal of Soil & Water Conservation (2015)
- Nutrient contribution and release kinetics of vermicompost amended pine bark, Compost Science & Utilization (2010)
- Animal and pasture productivity of 'Coastal' and 'Tifton 44' bermudagrass at three nitrogen rates and associated soil nitrogen status, Agronomy Journal (2009)
- Sorghum sudangrass as a summer cover and hay crop for organic fall cabbage production, Renewable Agriculture and Food Systems (2009)
- Soil physical properties and bromide movement in relation to tillage system, Communications in Soil Science and Plant Analysis (2006)
- Foliage residue decomposition and nutrient release in peach palm (Bactris gasipaes Kunth) plantations for heart-of-palm production in Costa Rica, Agronomy Journal (2005)
- Responses of soil microbial community structure and diversity to agricultural deintensification, Pedosphere (2005)
- Residue decomposition and nutrient release dynamics from two tropical forage legumes in a Kenyan environment, Agronomy Journal (2004)
- Contributions of shoot and root nitrogen-15 labeled legume nitrogen sources to a sequence of three cereal crops, Soil Science Society of America Journal (2002)