Resources to Support 4R Adoption in the Mid-Atlantic
Explore funding opportunities, practical guidance, and regional partnerships that make implementing the 4R practices easier and more effective.
4R Resources
Voucher Program
The Mid-Atlantic 4R Nutrient Stewardship Association has received funding from the Campbell Foundation and our 2024 National Fish and Wildlife Foundation Innovative Nutrient and Sediment Reduction grant to...
Fertilizer Efficiency & the 4Rs: Managing High Fertilizer Prices
When fertilizer prices are high, efficiency matters more than ever. The biggest return on investment doesn’t usually come from chasing new products—it comes from doing the fundamentals exceptionally well. That’s where the 4Rs of nutrient stewardship (Right Source,...
The Science Behind the 4Rs of Nutrient Stewardship
The 4Rs of nutrient stewardship—Right Source, Right Rate, Right Time, and Right Place—are more than guiding principles. They’re grounded in decades of agronomic research showing how nutrients move through soil, crops, and water systems. At their core, the 4Rs provide...
Getting to Know Your Soil
Article Written By: Todd Hunsicker, Growmark FS Following harvest one of the first steps to preparing for the next growing season is soil testing. Without knowing what nutrients are currently in the soil, applications of plant food may be a poor investment for growers...
Advanced Nutrient Management Vouchers Available
"Are you ready to take your farm to the next level for yield and efficiency?" For the upcoming small grains growing season, farmers and trusted advisors in the Chesapeake Bay Watershed have the opportunity to work together and plan advanced nutrient management...
4Rs of Dairy Manure
Successful and informative webinar by Mid-Atlantic 4R Chester, Maryland - June 17, 2025 - The Mid-Atlantic 4R Nutrient Stewardship Association held an hour-long webinar covering the 4Rs - Right Source, Right Rate, Right Time, and Right Place - of dairy manure. Robb...
Funding & Support Resources
Voucher Program
The Mid-Atlantic 4R Nutrient Stewardship Association has received funding from the Campbell Foundation and our 2024 National Fish and Wildlife Foundation Innovative Nutrient and Sediment Reduction grant to...
Cost Share
The Mid-Atlantic 4R Nutrient Stewardship Association is looking for producers who are interested in enhancing their 4R nutrient stewardship by adding an additional split to their nitrogen application or test a biofertilizer or biostimulant for the 2024 corn growing...
Advanced Nutrient Management Vouchers Available
"Are you ready to take your farm to the next level for yield and efficiency?" For the upcoming small grains growing season, farmers and trusted advisors in the Chesapeake Bay Watershed have the opportunity to work together and plan advanced nutrient management...
Partner Network
Explore funding opportunities, practical guidance, and regional partnerships that make implementing the 4R practices easier and more effective.
Recent News
Mid-Atlantic 4R Science Symposium
Join us Monday, January 26, 2026 in Lancaster, PA Chester, Maryland (January 16, 2026) – The Mid-Atlantic 4R Nutrient Stewardship Association is inviting you to our annual 4R Science Symposium scheduled for Monday, January 26th. The event will take place at The...
Nominate a 4R Advocate in the Mid-Atlantic
Highlight a 4R Farmer and Crop Consultant Today Chester, Maryland - October 2, 2025 - The Mid-Atlantic 4R Nutrient Stewardship Association (MA4R) is seeking nominations for a 4R Advocate in their region. The 4R Advocate Program recognizes agricultural retailers and...
Advanced Nutrient Management Vouchers Available
"Are you ready to take your farm to the next level for yield and efficiency?" For the upcoming small grains growing season, farmers and trusted advisors in the Chesapeake Bay Watershed have the opportunity to work together and plan advanced nutrient management...
4Rs and Fertility
Wednesday, March 5, 2025 (Chester, Maryland) - Over 130 attendees across the region joined the Mid-Atlantic 4R Nutrient Stewardship Association’s “Testing Efficiency February Webinar” on Monday the 24th. Key takeaways from the audience included: global use of...
Upcoming Events
Mid-Atlantic 4R Science Symposium
Join us Monday, January 26, 2026 in Lancaster, PA Chester, Maryland (January 16, 2026) – The Mid-Atlantic 4R Nutrient Stewardship Association is inviting you to our annual 4R Science Symposium scheduled for Monday, January 26th. The event will take place at The...