INRC Assistant Director Kay Stefanik shares information about the Iowa Nutrient Reduction Strategy (INRS) N-Load model and recent revisions made to to allow for a finer scale in estimating nitrate loss.
AMES, Iowa – When can we expect to see reduced levels of nutrients in our water if we make positive changes on the landscape? New Iowa State University research shows how complicated it is to give a sound answer to that question.
The research is featured in a recent article in the peer-reviewed Journal of Environmental Quality, co-authored by Ph.D. student Gerasimos J. Danalatos, Professor Michael Castellano and Associate Professor Sotirios V. Archontoulis, in Iowa State’s Department of Agronomy, and Calvin Wolter, a Geographic Information Systems analyst with the Iowa Department of Natural Resources.
By Madeleine Resener, GeoPols
Nitrogen, one of the most plentiful gases in our environment, is both a friend and foe to our planet and to ourselves.
It makes up 45% of the nutrients used in fertilizers to grow corn, wheat, and soybeans. That’s why it is essential to crop output. However, nitrogen can be a pollutant – especially when it seeps into water supplies through agricultural run-off or leaching.
Researchers have been exploring various techniques to reduce the nitrogen that ends up in lakes, streams, and other bodies of water.
The Water Security Initiative is a consortium of interdisciplinary researchers at Iowa State University collectively and collaboratively working towards advancing water security and justice throughout the urban-rural continuum. The mission of the initiative is to support world-class research and education in water sustainability that ensures equity for all people and care for natural and managed ecosystems. To promote graduate student research and engagement in this effort, a competitive grants program is open for graduate students at Iowa State University.
DES MOINES, Iowa (May 24, 2023) – The Iowa Department of Agriculture and Land Stewardship, Iowa State University and the Iowa Department of Natural Resources, the three principals of the Iowa Nutrient Reduction Strategy, today jointly announced that the online dashboards that report the results of the Iowa Nutrient Reduction Strategy have been updated to reflect the latest reporting period. Today’s announcement coincides with the 10-year anniversary of the Nutrient Reduction Strategy. Adoption of conservation practices continues to increase, and progress is expected to continue to build over the next decade as water quality and conservation practice implementation accelerate.
AMES, Iowa — Drainage experts from around the world will convene in Des Moines, in person, Aug. 31- Sept. 2, to discuss agricultural drainage opportunities and solutions to challenges at the 11th International Drainage Symposium.
"Farm News" interview with Iowa Nutrient Research Center Assistant Director Kay Stefanik about the importance of wetlands and the roles they play in Iowa's landscape. Article (June 19, 2020) by Kriss Nelson.
A publication in Bioenergy Research Letters by INRC Director Matt Helmers and others, reports findings of a model-based investigation on the potential benefits of growing winter rye as a cover crop as part of corn-soybean rotations in the North-Central Region of the U.S. They concluded that harvesting fertilized rye CCs before soybean planting in this area could reduce nitrogen loads to the Gulf of Mexico by 27% relative to no cover crops, while providing an estimated 18 million Mg yr−1 of biomass-equivalent to 0.21 EJ yr−1 of biogas energy content (3.5 times the 2022 US cellulosic biofuel production).