Below are important links and documents for 4R Certified branch locations or those wanting to become 4R Certified:

Informational links about the 4R Nutrient Stewardship Certification Program:

• 4R Nutrient Certification Program Informational Brochure
• Program Guidelines Summary
• Ohio Watershed Network Map
• Western Lake Erie Basin Drainage by HUC 8 Watersheds map

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4R Nutrient Stewardship Certification Program documents and guidance:

• 4R Certification Manual – Version 6
• 4R Certification Guidance Documentation Required – Version 6

Tools for 4R Certified branch locations or those wanting to become 4R Certified:

• Grower List – TEMPLATE
• Grower Signature Form – SAMPLE
• Protecting Your Phosphorus Fertilizer Investment – SAMPLE
• Protecting Your Nitrogen Fertilizer Investment – SAMPLE
• Yield Goal Documentation – SAMPLE
• The Ohio State University Soil Sampling Guidelines
• Purdue University Soil Sampling Guidelines
• Educational Guidelines – Requirement 23
• Tri-State Fertilizer Recommendations
• Download the Fertility Recommendation Calculator
• ODA Fertility Management Tool v.5 (Aug.2020) – All Manure Types
• Developing Phosphorous and Potassium Recommendations for Field Crops
• Nutrient Application Guidance
• Custom Application Documentation Sheet – SAMPLE
• Nutrient Service Provider Recommendation Sheet – SAMPLE
• NRCS-Geospatial Data Gateway Procedure Information
• NOAA – National Weather Service
• National and State Fertilizer Laws

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Video Resources:

• 3 Big Themes of Elevated Phosphorus
• Training Model for Elevated Phosphorus – Part 1
• Training Model for Elevated Phosphorus – Part 2
• Training Model for Elevated Phosphorus – Part 3

Educational Resources