Promoting Sustainable Nutrient Stewardship Across Pennsylvania
An Industry-Led Partnership for Pennsylvania Agriculture
The Steering Committee includes: Rosetree Consulting (Executive Directors Eric & Brooke Rosenbaum), The Nature Conservancy, Growmark FS, Pennsylvania Farm Bureau, PA NRCS, Timac Agro USA, Chemgro, and Syngenta.
Science-Based Solutions for Pennsylvania Farms:
- Increase productivity and profitability through practical, field-tested nutrient strategies.
- Enhance environmental conservation across Pennsylvania farming communities.
- Expand adoption of sustainable 4R nutrient stewardship practices, including manure injection and precision application methods.
- Support on-farm implementation of manure injection to improve nutrient placement, reduce runoff, and protect soil and water quality.
- Provide anonymous nutrient management data to track regional progress and inform future programs.
- Recognize producers and retailers leading in 4R adoption.
- Share farmer success stories at conferences, field days, and outreach events
Recognizing the People Who Make PA4R Work
Strengthening Pennsylvania Agriculture
- Expanded 4R outreach across Pennsylvania through conferences and events.
- Collected nutrient management practice data to document statewide progress.
- Recognized farmers and advisors implementing the 4Rs successfully.
Every success story strengthens Pennsylvania agriculture — proving that sustainability and profitability go hand in hand.
Be A Part of the 4R Movement in Pennsylvania
Contact Info
📞 Eric Rosenbaum | 484-788-7263
📧 ericrosenbaum@rosetreeconsulting.com
📱 Facebook: @PA4RALLIANCE
Press and News
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...
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...
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...
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...