- Agronomic: corn, soybeans, grass (misc. perennial), hay
- Animal Products: dairy
- Animal Production: feed formulation, feed rations, manure management, feed/forage
- Crop Production: nutrient cycling
- Education and Training: decision support system
- Production Systems: agroecosystems
- Soil Management: nutrient mineralization
Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture or SARE.