4R Partners
4R nutrient stewardship is being embraced by organizations around the country who are working to bring you the most current information about Fertilizer Best Management Practices. 4R Partners 1) embrace the 4R framework within their organization and messaging as a recognizable strategy for economic, social, and environmental sustainability; 2) create awareness and provide outreach for the initiative within their organization, to their stakeholders, to policy developers and to the public; and 3) as applicable they implement services or practices consistent with the 4R scientific principles.

Ostara Nutrient Recovery Technologies, Inc. (producers of Crystal Green)
www.ostara.com and www.crystalgreen.com