Malcolm Yusuf St Cyr completes his Master’s degree

Malcolm Yusef St Cyr Headshot

Today, we congratulate RegenPGC Graduate Education Community member Malcolm Yusuf St Cyr for his successful thesis defense and completion of his Master’s studies at Iowa State University under the mentorship of RegenPGC CoPd Dr. Marshall McDaniel. Learn more about Malcolm’s thesis, Perennial ground covers: A mitigation strategy to nitrous oxide (N₂O) emissions for maize cropping systems, at www.regenpgc.org/wp-content/uploads/2026/05/2026-05-19-StCyr-OFFICIAL-THESIS.pdf

ABSTRACT
Agricultural intensification in the U.S. Midwest has led to widespread of nitrogen (N) losses through nitrate (NO₃⁻) leaching and nitrous oxide (N₂O) emissions, two processes that threaten water and atmospheric quality. Traditional winter cover crops (WCCs) have proven to be effective in reducing NO₃⁻ leaching but remain limited in adoption due to economic and management challenges. Perennial ground cover (PGC) systems integrate non-leguminous perennial grasses in between annual row crops offering a potentially optimized alternative that maintains continuous soil cover without requiring annual replanting. However, their influence on soil nitrous oxide emissions and soil nitrogen and carbon pools remain poorly explored. In this study we used three PGC treatments: 1) Zea mays L. without PGC (Maize Control), 2) maize with Poa bulbosa, a summer-dormant grass commonly called bulbous bluegrass (Maize+BBG), and 3) maize with Poa pratensis, or Kentucky bluegrass (Maize+KBG) to analyze the impact of PGC on N₂O emissions and soil N and C pools. Both PGC treatments reduced interrow cumulative N₂O emissions by 38–81% relative to the control in both years (p < 0.01), although row-position emissions were more variable and influenced by fertilizer placement. Despite these consistent interrow reductions, field-level cumulative N₂O emissions were not significantly different among treatments in either year. Overall, our results indicate that PGC does not affect field-level soil N₂O emissions, while maintaining similar levels of plant-available N, and had no effect on maize yield.

Hallie Sandeen graduates from the University of KY

Hallie Sandeen graduation photo standing in corn

This holiday season, we celebrate the graduation of another member of our Graduate Education Community, Hallie Sandeen. Hallie has earned her Master’s degree from the University of Kentucky, where she was mentored by Dr. Erin Haramoto, Co-Project Director of RegenPGC. Hallie’s thesis, “Evaluation of Poaceae Species and Suppression Application Methods for Perennial Groundcover in Corn,” will contribute to the perennial ground cover research portfolio that our project is developing.

Hallie is the fifth graduate student to complete their degree with support from RegenPGC.

Hallie Sandeen, December 2025, Crop Ecology & Management (Master’s, University of Kentucky) – Dr. Erin Haramoto

Jack Moran, June 2025, Crop Ecology & Management (Master’s, Iowa State University) –  Drs. Susana Goggi & Ken Moore

Oluwatuyi (“Tuyi”) Olowoyeye, June 2025, Ecosystem Services and Modeling (Ph.D, Iowa State University) – Dr. Amy Kaleita

Max Eness, May 2025, Soil Health & Nutrient Management (Master’s, Iowa State University) – Dr. Marshall McDaniel

Kaila Topping, 2023 May, Ecosystem Services & Modelling (Master’s, University of Wisconsin, Madison) – Dr. Rob Anex

RegenPGC grad student Prathyusha Cheguri honored at CANVAS annual meeting

Prathyusha Cheguri at Tri Societies 2025

Congratulations to RegenPGC graduate student Prathyusha Cheguri. Her presentation, Unlocking Sexual Reproduction in Poa Bulbosa received a 1st place award in the “5-minute Rapid Crop Breeding and Genetics” oral competition at the recent 2025 CANVAS (formerly Tri Societies) Annual Meeting in Salt Lake City.

The meeting, now known as CANVAS and jointly hosted by the American Society of Agronomy, the Crop Science Society of America, and the Soil Science Society of America, is the premier meeting across the field of environmental sciences. According to the organizers, “CANVAS is equal parts science, networking, collaboration, and camaraderie.”  Every year, members of the RegenPGC team attend this meeting. We accept as many graduate students as possible.

You can learn more about Prathyusha’s award-winning presentation at https://www.regenpgc.org/wp-content/uploads/2025/11/2025-11-11-Tri-Societies-Cheguri-Award-Winner.pdf

RegenPGC Team releases Year 4 Q 4 progress report

RegenPGC Yr 4 Q 4 Progress Report Cover

If it’s not documented … is it really complete? Who knows. However, here is our RegenPGC Year 4 Q4 Progress Report, and there is no doubt that we are learning more every day about perennial cover crops. You can access the report at https://www.regenpgc.org/wp-content/uploads/2025/11/RegenPGC-Yr-4-Q4-Progress-Report.pdf.

The report is written in a bulleted, friendly format and divided by topics so you can find your perennial cover crop passion right away! Check out our Research Objectives and Themes:

Objectives: Obj. 1. Crop Ecology & Management, Obj. 2. Plant Breeding & Genetics, Obj. 3. Soil Health & Nutrient Management, Obj. 4. Ecosystem Services, Modeling, Obj. 5. Socioeconomic Impacts & Policy and Project Evaluation

Themes:  Research and Development, Extension, Education, and Commercialization

SeedWorld names RegenPGC CoPD Dr. Susana Goggi a top 50 woman

Susan Goggi award flyer

RegenPGC CoPd Dr. Susana Goggi was recently recognized by SeedWorld magazine as one of thirty “high-impact women” in the US seed industry. According to SeedWorld, Dr. Goggi and her distinguished peers have “carved out space in a field long dominated by others, proving that grit, skill, and collaboration are the true markers of excellence. From the lab to the boardroom, from seed physiology to supply chain, they are rewriting what impactful leadership looks like in our industry.”

Having Dr. Goggi on our team, we could not agree more with this assessment! Learn more about Dr. Goggi and the SeedWorld high-impact women’s group at: Nielson, Aimee (2025, September 23). A league of her own: 30 high-impact women. SeedWorld. https://www.seedworld.com/us/2025/09/23/shes-in-a-league-of-her-own-3/

Another honor for the RegenPGC grad student community

Yes, we are a research project, but we never forget that we are in the business of educating the next generation. In the summer, we mentor prospective STEM Education school teachers [See more at: https://www.regenpgc.org/theme-3-education/2023-ret-reu-programs-copy/]. But, all year round, our team mentors a talented group of graduate students in our Graduate Education Community.

Today, we celebrate Memiş Bilgici from our Breeding & Genetics Objective[See more at: https://www.regenpgc.org/objective-2-plant-breeding-and-genetics/], who presented this poster and was awarded a travel grant to Hawai’i: (Bilgici Memiş, Yu-Ru Chen, & Thomas Lübberstedt. (2025, May 19–23). Do we need dedicated maize varieties for perennial groundcover systems? [Poster]. 2025 National Association of Plant Breeders Annual Meeting, Kona, Hawa’i, United States).

Learn more by reading Memiş’ Poster Abstract at https://napbannualmeeting.org/wp-content/uploads/2025/07/NAPB_2025_Booklet_Digital_VF2.pdf, Poster #50.

Jack Moran thesis is available for download

Jack Moran Master's Thesis

RegenPGC graduate student Jack Moran’s master’s thesis, Improving the establishment of Kentucky Bluegrass as a perennial groundcover, is now available to download at https://lnkd.in/gRUhFFDs

Jack’s key research takeaway is: “Strategies such as using Hydroloc™ seed treatment and optimizing seed ratios and rates can significantly improve the establishment of Kentucky bluegrass as a perennial groundcover in corn production.”

Additional topics discussed include:
– Seed treatments for crop establishment
– Impact of irrigation on plant growth
– Economic considerations in agricultural practices

Learn more about Jack and the entire RegenPGC Graduate Education Community at https://www.regenpgc.org/theme-3-education/graduate-education-copy/

Field Day Season is Here!

Dan Andersen leads field day class

It’s not just summer; it’s field day season! Field days are our opportunity to share information about our project with folks working in agriculture. It’s the ultimate win-win —we share information and get feedback from people making a living from the land.

Our first field day event of the year, on June 20th, just north of Waterloo, IA, was a joint project with our colleagues at the Blackhawk Soil & Water Conservation District, who are leading the CIG grant*. We anticipate hosting several field days during the fall. Follow us on LinkedIn and BlueSky Social (‪@regenpgc.bsky.social‬) for updates, or shoot us an email for more details as they become available.

The turnout was excellent – we had a great turnout of farmers, NRCS folks, and ISU-PGC faculty, staff, and grad students. RegenPGC CoPD Marshall McDaniel (Soil Health & Nutrient Management) brought several team members. Graduate student Cameron Krumm (Plant Breeding & Genetics) was also able to accompany RegenPGC Project Director Raj Raman and CoPd Dan Andersen (Extension Theme).

The day’s highlight was the presentations by RegenPGC Collaborator Brent Wilson (Corteva, ret.) and Dan Andersen. Unfortunately, the morning’s torrential rains precluded a visit to Rick Rottinghaus’ fields. Still, they didn’t impact the fantastic hospitality of Rick and his spouse Mona, along with the organizational help from NRCS staff members Shaffer Ridgeway and Jenna Curran.

*Perennial Groundcover: A Scalable Systems Approach to Achieving Soil & Water Conservation with High-Yield, Row Crop Production in Iowa (Blackhawk Soil & Water Conservation District)

Seed Science Center recognizes RegenPGC’s Amina Moro

Amina Moro in the lab

This article is a reprint from the Iowa State University Seed Center, originally published online May 6, 2025.

Shedding Light on Shade Avoidance: Seed Scientist Studies Corn’s Early Stress Signals | Seed Science Center

AMES, IA – In the glow of the Seed Science Center’s growth chambers, graduate student Amina Moro is hard at work uncovering how corn responds to one of its earliest stress signals—shade.

Moro, an international student from Ghana and a graduate assistant to Professor Susana Goggi, is investigating the Shade Avoidance Response (SAR) in corn. This phenomenon, triggered when corn perceives competition from nearby plants, causes the crop to adjust its growth—often in counterproductive ways.

“When corn senses that it’s being shaded by nearby vegetation, it reacts quickly,” said Moro. “It starts reallocating energy to grow taller or change its leaf angles in an effort to capture more light. But that comes at a cost—less energy goes into producing strong roots or healthy grain.”

Her research focuses on how SAR is triggered when corn is grown in proximity to perennial grasses, specifically rye. These interactions are particularly relevant as farmers increasingly adopt cover cropping systems for soil health, which often include species like rye.

“In our study, we’re trying to pinpoint the exact distance at which corn begins to detect the presence of rye and initiates the shade avoidance response,” explained Moro. “We planted the corn and rye in separate containers and placed them at different distances from one another to isolate above-ground competition.”

By using controlled lighting and a strategic container setup, Moro can monitor changes in red to far-red light ratios—the signal plants use to detect nearby competitors. This enables her to identify not only when SAR is triggered but which parts of the corn plant respond first.

“We’re looking at how the plant reallocates its resources—whether it prioritizes stem elongation, leaf development, or other changes,” she said. “Ultimately, we hope this data helps farmers and researchers better understand how to manage competition in early corn development without sacrificing yield.”

As Moro continues her work, she’s optimistic about how these findings could inform smarter planting strategies in diversified cropping systems.

“Coming from Ghana, where smallholder farmers often grow multiple crops together, I understand how important it is to make intercropping work,” she said. “I’m excited to contribute research that could help make these systems more productive and sustainable.”

About the Seed Science Center

The Seed Science Center at Iowa State University is a national and international center of excellence in seed research, education, technology transfer, and global seed programs.

 Contact: Cynthia Hicks, Seed Science Center, 515-296-5386, cghicks@iastate.edu

Elobeid honored with research award

CoPd Amani Elobeid Headshot

It’s raining awards on our RegenPGC Team, but that’s no surprise given the quality of our research collaborators and graduate students. Today, the sun shines brightly on Dr. Amani Elobeid from our Socioeconomic Impacts & Policy Objective.

Dr. Elobeid, who is an Iowa State University professor in economics and the Ron and Lynn Deiter Endowed Chair for Sustaining Excellence in Agricultural Business, has been honored with the term faculty 2025 Outstanding Achievement in Research Award from the Iowa State University – College of Agriculture and Life Sciences.

Dr. Elobeid was recognized for her impressive research portfolio that addresses such issues as the causes of food insecurity, World Trade Organization trade agreements and their impact on the developing world, and the effects of biofuels, among other issues. Dr. Elobeid has more than 30 academic publications. She also has a powerful teaching presence at Iowa State University.

USDA National Institute of Food and Agriculture Iowa State University
(Photo: Courtesy of Iowa State University College of Agriculture & Life Sciences)