About Us

The Mid-Atlantic 4R Nutrient Stewardship Association is a non-profit organization whose members include the Delaware-Maryland 4R Alliance and the Pennsylvania 4R Alliance. We provide information and outreach to farmers, ag service providers and others about the benefits of 4R nutrient stewardship, as well as practical guidance on how to implement new management strategies.

 The Delaware-Maryland 4R Alliance is a collaboration between agribusinesses, farmers, government agencies, conservation groups and scientists. We’re working to ensure that every nutrient application on Delmarva is consistent with the 4Rs- the right nutrient source, applied at the right rate, at the right time, in the right place. We are focused on increasing implementation of 4R practices to benefit the economic, environmental and social well-being of our region and our farmers.

The Pennsylvania 4R Alliance was organized 2012 by PennAg Industries. The Steering Committee for the industry-led initiative includes Growmark FS, PA Farm Bureau, PA NRCS, Timac USA, Chemgro and Syngenta.

The PA 4R’s Mission: Collectively work with farmers to deliver science-based systems that improve crop productivity through increased nutrient use efficiency and reduce losses of nutrients to the environment.