Nutrient Reduction Resources
The Iowa Nutrient Reduction Strategy is a science and technology-based framework to assess and reduce nutrients to Iowa waters and the Gulf of Mexico. It is designed to direct efforts to reduce nutrients in surface water from both point and non-point sources in a scientific, reasonable and cost effective manner.
State development and implementation of nutrient reduction strategies are a major focus of the Hypoxia Task Force (HTF).
Over 94% of Iowa’s land is held in private ownership, and the programs of the Iowa Department of Agriculture and Land Stewardship - Division of Soil Conservation (IDALS-DSC) have been established to work with these landowners.
4R Plus involves using precise 4R nutrient management and conservation practices to provide nutrients when the crop needs them and to enhance soil health and improve water quality.
Site dedicated to the science of water quality. Also includes a primer on nitrogen in the cropping system: http://stories.cals.iastate.edu/nitrogen/
Other Water Quality & Conservation Information:
Measurement Knowlege Center - History of Measurement