- Agronomic: general grain crops
- Animal Production: pasture fertility
- Crop Production: organic fertilizers
- Education and Training: demonstration, extension
- Production Systems: agroecosystems
- Soil Management: green manures, organic matter, nutrient mineralization, soil quality/health
- Sustainable Communities: sustainability measures
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.