Water quality research is a 'team sport’: Collaboration is worth the investment  

March 25, 2025
News

This is the third and final article in an INRC series highlighting partnerships that help advance water quality research.

Last year, Matt Helmers was a featured speaker for a Foundation for Food & Agriculture Research webinar highlighting the benefits of collaboration. Helmers, director of the Iowa Nutrient Research Center, has considerable experience with partnerships at state, regional and national levels.

"Collaboration takes time and sometimes other investments, and it doesn't always work out," he said. "But when it does, it has so much potential to expand the reach and impacts of our research."

Helmers especially values several impactful partnerships he has been – and continues to be  –  involved in, including the Iowa Learning Farms, the SERA-46 Committee that works on Gulf Hypoxia and FFAR. Read more about Water quality research is a 'team sport’: Collaboration is worth the investment  

Schwab takes role as water quality measurement coordinator for INRS

March 3, 2025
News

Iowa’s new water quality measurement coordinator, Elizabeth Schwab, is looking forward to combining her expertise in water quality and management of big data sets to support the Iowa Nutrient Reduction Strategy. Schwab is coordinating the ongoing effort to make data representing the status of the Nutrient Reduction Strategy available online in accurate and engaging ways. She started the position in January.  Read more about Schwab takes role as water quality measurement coordinator for INRS

Watershed Scaling Effects Measured Via Nested High Frequency Sensors Jan 2025

Project Update

The primary activity since receipt of the grant has been preparing equipment and site selection for the actual research. Nitratax sensors are undergoing preventive maintenance and re-calibration. The maintenance and site-selection are ongoing and will be complete within the next 1.5 months. We anticipate installation of equipment in March/April (depending on weather).

Related accomplishments and activities 

1 proposal was submitted: CIROH White Paper (pre-proposal) - Connecting Hydrology and Public Health: Iowa as a Water Quality Testbed.  Read more about Watershed Scaling Effects Measured Via Nested High Frequency Sensors Jan 2025

Can adjustments to nitrogen rates reduce corn yield drag and disease implications following a cereal rye cover crop? Jan 2025

Project Update

In the summer/fall of 2024, between V6 and corn maturity, three in-situ mineralization tubes were placed and collected in two-week intervals at the Ames location, the last one being before corn harvest. Plant height was taken at VT. Final plant density and number of ears were collected before harvest. Similar to 2022 and 2023, the Ames location showed primary difference among landscape positions, but has differences between nitrogen rate and presence of cereal rye as well.

Related accomplishments and activities 

2 presentations Read more about Can adjustments to nitrogen rates reduce corn yield drag and disease implications following a cereal rye cover crop? Jan 2025

Evaluating the relation of phosphorus to turbidity during high flow events in western Iowa rivers to improve phosphorus load estimates Jan 2025

Project Update

All fieldwork and water quality sampling for this project was completed. The multiple heavy rainfall events that occurred in western Iowa from April to July 2024 allowed ample data collection at high flows for the seven rivers covered in this project. Following sampling efforts, all field equipment was retrieved. We also completed all data analysis and model validation required for this project. Read more about Evaluating the relation of phosphorus to turbidity during high flow events in western Iowa rivers to improve phosphorus load estimates Jan 2025

Investigating Long-term Nutrient Trends and Short-term Orthophosphate Dynamics in a HUC12 Basin with Extensive Land Use Change Jan 2025

Project Update

Since the commencement of this project, we have collaborated with researchers at the ARS to retrieve and organize all continuous, in-situ data collected along Walnut Creek. Our initial analysis has focused on exploring a unique dataset containing continuous, sub-daily observations of orthophosphate. Read more about Investigating Long-term Nutrient Trends and Short-term Orthophosphate Dynamics in a HUC12 Basin with Extensive Land Use Change Jan 2025

Sociological water quality research: quantifying factors at multiple scales that influence farmers to shift from being potential to actual adopters of conservation practices Jan 2025

Project Update

During this period, researchers:

- Analyzed the Nutrient Reduction Strategy (NRS) farmer survey data on farmers' use of cover crops and no-till over time. The results show how net adoption rates of cover crops and no-till are far lower than gross adoption rates due to relatively high levels of disadoption. A researc paper reflecting this part of the project was developed. Read more about Sociological water quality research: quantifying factors at multiple scales that influence farmers to shift from being potential to actual adopters of conservation practices Jan 2025

An integrated assessment framework to evaluate conservation practices and environmental and economic benefits: A case for central Iowa Jan 2025

Project Update

We have made considerable progress in testing the Des Moines River Basin (DMRB) SWAT model with in-stream nitrate monitoring data at multiple gauges throughout the basin. Nitrogen inputs from inorganic fertilizer and from livestock manure were both accounted for via applications to cropland across the DMRB. The initial results indicate that the model accurately replicated the monitoring data at a majority of the gauge sites although there is definite uncertainty in the current results. Read more about An integrated assessment framework to evaluate conservation practices and environmental and economic benefits: A case for central Iowa Jan 2025

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