- About Us
Nutrient ManagementManaging nutrients, whether it is synthetic fertilizer or manure and other organic fertilizers requires planning. Determining which type of fertilizer to apply, the application rate and timing are key factors in managing soil to improve crop yield and quality, reduce fertilizer costs and help protect the environment.
- Applying Lime to Raise Soil pH for Crop Production (Western Oregon)
- Eastern Oregon Liming Guide
- Fertilizer and Lime Materials
- Monitoring Soil Nutrients Using a Management Unit Approach - Learn how to design a soil nutrient monitoring strategy that fits today’s requirements for record keeping and increased accuracy in management nutrients.
- Nitrogen Uptake and Utilization by Pacific Northwest Crops
- Post-Harvest Soil Nitrate Testing for Manured Cropping Systems West of the Cascades
- Agriculture Phosphorus Management using the Oregon/Washington Phosphorus Index
- Fertilizing Lawns - This publication will help you better understand the reasons for fertilizing, optimum application rates and timing, types of fertilizer materials, how to read a fertilizer label and how to avoid turf damage and environmental pollution.
- Fertilizing Your Garden
Fertilizer and Nutrient Management Guides
Organic Fertilizer Resources
- Fertilizing with Manure
- Manure Management Practices to Reduce Water Pollution
- Fertilizing with Yard Trimmings
- Predicting Nitrogen Availability for Organic Amendments - A study to improve the ability to predict nitrogen availability from organic soil amendments, including improved accuracy of Nitrogen availability estimates, to target amendment application rates to meet crop N needs.
Oregon State University Extension developed the Organic Fertilizer and Cover Crop Calculator. This tool allows farmers to estimate plant-available nitrogen (PAN) provided by organic fertilizers and cover crops, prepare balanced fertilizer programs that account for cover crop N, and compare the costs of different fertilizer programs and cover crops.