Graphic for Iowa Nutrient Reduction Strategy and Your Farm workshop, June 18, near Carroll, Iowa
June 03, 2024

AMES, Iowa – A free half-day workshop on the Iowa Nutrient Reduction Strategy and incorporating nutrient reduction practices into farm operations will take place Tuesday, June 18, from 9 a.m. to 2 p.m., at the East Shelter House, Swan Lake State Park, near Carroll, Iowa. The workshop is hosted by the Iowa State University Extension and Outreach and the Iowa Nutrient Research Center.  

Group that includes Chinese visitors in jackets and backpacks in biosystems engineering lab
May 20, 2024

AMES, Iowa – A group of Chinese academics and professionals representing water resource and forestry disciplines recently visited the Iowa Nutrient Research Center and colleagues at Iowa State University and the University of Iowa.

Cover of INRC Annual Review 2023 showing lush growth of cover crop
April 02, 2024

AMES, Iowa - The Iowa Nutrient Research Center has released its 2023 Annual Review

INRC logo
March 25, 2024

AMES, Iowa- The Iowa Nutrient Research Center is accepting new proposals for research projects designed to reduce nitrate and phosphorus in Iowa’s water.

March 14, 2024

A study published by the Center for Agricultural and Rural Development at Iowa State University presents findings from INRC-supported research on the views of landowners and farmers regarding edge-of-field conservation practices and the barriers to scaling up these practices to significantly reduce nutrient loss. Using two rounds of survey responses among over 1,000 landowners and farmers residing in five watersheds in Iowa, conducted in summer 2022 and 2023, this study provides informative updates for EOF practices on current adoption rates and adoption willingness, perceived environmental benefits, and barriers to adoption and puts forward suggestions on effective education strategies embraced by landowners and farmers.

Headshot of man with short hair, dark glasses, light-colored shirt
February 12, 2024

Matt Helmers has been making a difference on Iowa’s landscape for more than two decades. His passion for agriculture and conservation have led to a career working with Iowa’s farmers and communities as they adopt new practices to improve water quality and manage nutrients.

INRC round logo: Iowa Nutrient Research Center - Science for Iowa's water
January 30, 2024

AMES, Iowa – A new Iowa Nutrient Research Center seminar series for spring 2024 continues its Focus on the Future with current and recent graduate students discussing studies they are involved in and some of their experiences as early career researchers. 

INRC round logo
December 06, 2023

AMES, Iowa - The Iowa Nutrient Research Center at Iowa State University is releasing highlights of recent activity

Wetland in background with yellow flowers in foreground
December 01, 2023

 A new educational opportunity, the Iowa Nutrient Reduction Strategy and Your Farm Workshop, is available to interested local Iowa State University Extension and Outreach staff or other farm and community leaders. The new workshop is available to provide farmers, landowners and conservation professionals with information on the purpose, need, action items, and benefits of the Iowa Nutrient Reduction Strategy and provide tools to create a basic nutrient reduction plan for their farm operation.

A digital toolkit of related resources to use individually or in association with the workshop is also available. Follow this link to access the digital toolkit with presentation slides, handouts, advertising materials, and evaluation materials. 

The materials are based on a half-day workshop conducted in 2023. They utilize modeling tools like the Nitrogen Load Estimate Calculator and Nutrient Tracking Tool to provide tailored estimates of nutrient losses from row crop acres under current operating conditions and after  incorporation of nutrient management practices.

To inquire about planning a workshop in your area -- or for other questions -- contact Kay Stefanik, assistant director of the Iowa Nutrient Research Center. 

Cover crop growing in no-till corn field after corn harvest
October 16, 2023

A study of Iowa farmers’ use of 4R Plus nutrient management practices offers insights into social, economic, and ecological influences on adoption that operate at both an individual level and within a larger, county-level context.

aerial view of a field that shows lighter areas where little or no nitrogen was applied
October 12, 2023

Despite incentives to use just the right amount of nitrogen fertilizer on corn fields, current official recommendations are broad and ideal rates can vary widely from field to field and year to year. A research team led by Michael Castellano, the William T. Frankenberger Professor of Soil Science and an Iowa State University professor of agronomy, and ISU colleague Sotirios Archontoulis, Pioneer Hi-Bred Agronomy Professor, is collecting data from trials across Iowa – mostly in fields of participating volunteer farmers – to build models that offer far more granular guidance. The Iowa Nitrogen Initiative is supported with annual funding from the Iowa Department of Agriculture and Land Stewardship.

September 29, 2023

Iowa Nutrient Research Center Director Matt Helmers will be one of the hosts at the upcoming Conservation on Tap event, sponsored by Iowa Learning Farms, in partnership with the Des Moines Water Works and Conservation Learning Group, Thursday, Oct. 19, from 6-7 p.m. at Big Grove Brewery & Taproom in Des Moines. Staff from Big Grove Brewery will join in the conversations as to why water quality matters for brewing, along with Ted Corrigan, CEO and General Manager of Des Moines Water Works, and Mark Licht, associate professor and extension cropping systems specialist with Iowa State University Extension and Outreach.


September 05, 2023

Two workshops on tile drainage and water quality intended for women in agriculture will be held this fall in eastern Iowa.The first workshop will be held on Sept. 13 at 5:30 p.m. in Hiawatha, and will include presentations on the basics of field tile drainage, the economics of tile drainage and water quality considerations. The second workshop will be held Nov. 8 at 5:00 p.m. in Cedar Rapids and will include presentations on tile drainage-related water quality practices, as well as opportunities for cost assistance. The workshops are hosted by Iowa State University Extension and Outreach, Linn and Johnson counties and sponsored by a grant from Wings2Water. More details at: 

Picture of pond next to farm field with farm buildings in background
August 28, 2023

The Iowa Soybean Association’s Research Center for Farming Innovation (RCFI) is exploring the potential for drainage water recycling at the farm leve

Pictures of eight diverse, young men and women.
August 23, 2023

AMES, Iowa – The Iowa Nutrient Research Center’s Fall 2023 Seminar series will feature presenters disc

August 15, 2023

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).

May 24, 2023

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.


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