- Agronomic: corn, sorghum (milo)
- Animal Production: manure management
- Crop Production: continuous cropping, nutrient cycling, organic fertilizers, tissue analysis
- Education and Training: demonstration, extension
- Production Systems: general crop production
- Soil Management: organic matter
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.