Alex Haus

From Wartburg to Iowa State. Not a long journey if you know what a Wartburg is! Alex Haus, the third member of our 2026 REU class, is a student at Wartburg.

For you non-Iowans, Wartburg is a small liberal arts college in Waverly, Iowa (Learn more about Wartburg). We are so pleased to note that Alex is a returning Research Undergraduate Intern. His experience last year proved so valuable that he is now back to gain even more knowledge from his RegenPGC mentor team. (Learn more about Alex’s 2025 summer)

ALEX HAUS – WARTBURG COLLEGE

Brief Bio. I am currently a junior at Northern Arizona University studying Mathematics and Secondary Education with the goal of becoming a high school math teacher. I grew up in Gilbert and later moved to Flagstaff to attend college. Alongside school, I am also a licensed hairstylist and enjoy doing hair part-time while pursuing my degree.

I recently began my practicum experience, where I have worked in both science and math classrooms, which has strengthened my passion for teaching and working with students.

Outside of academics and work, I enjoy watching movies and TV shows, working out, and spending quality time with friends and family. Something unexpected about me is that even though I am a huge math enthusiast, geometry is actually my least favorite area of math.

Why I applied… I applied again to meet new people and build meaningful connections, because last year I met some amazing individuals and had a truly positive experience. Last time, the program provided me with valuable knowledge, new perspectives, and strong relationships, and I am hoping to continue building on that experience. I want to keep growing by learning from others, challenging myself in a new environment, and gaining skills that will support me throughout my college experience and future career.

My expectations for the REU program include… My expectations for the summer RET/REU program include gaining hands-on research experience, building meaningful connections, and finding opportunities to thrive in a new and challenging environment. I want to push myself to grow both personally and academically while learning from others and developing skills that will support me in my future career in education.

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.

New research informs how corn and perennial groundcover can coexist

Amina Moro in the lab

Today, we honor RegenPGC Graduate Education Community member Amina Moro and her work on corn’s “Shade Avoidance Response.” Iowa State University – College of Agriculture and Life Sciences recognized Amina’s work by featuring her in the article, “New research shows finding the ‘sweet spot’ is key to successful groundcover systems.” See: https://www.cals.iastate.edu/news/2026/new-research-shows-finding-sweet-spot-key-successful-groundcover-systems

Amina’s work informs how corn behaves when perennial groundcover is located in proximity to it. As the article specifies, “The practical applications of this research are clear. By maintaining a small buffer zone – around 25 centimeters – farmers can prevent early stress signals in corn while still benefiting from soil protection.”

According to Amina, “Farmers do not have to choose between improving soil health and maintaining yield,” Moro said. “With the right combination of spacing, hybrid selection, and management practices, it is possible to design systems where corn grows efficiently while the soil remains protected.”

Learn more about the science behind Amina’s work in her recently published paper in the Journal of Agronomy, “Spatial Proximity to Perennial Groundcover Triggers Shade Avoidance Responses in Corn” (https://www.mdpi.com/2073-4395/16/7/729).

It’s raining awards!

Memis Bilgici Award

They keep coming! Here is another award for a member of our RegenPGC Graduate Education Community. This time, it’s Memiş Bilgici who received an Iowa State University Research Excellence Award (REX).

Per the University, the award’s purpose is to “[…] recognize outstanding research accomplishments as documented in their dissertations. These students are also expected to be academically superior and able not only to do research but also to develop a well-written product. The intent of REX program is to recognize “the best of the best” graduating students who have submitted theses and dissertations.”

Congratulations to Memiş and his supervisor, Prof. Thomas Lübberstedt this significant achievement and recognition.

From Memiş: “I am deeply grateful to my supervisor, Prof Thomas LübbLübberstedtd to the RegenPGC community, with whom I have had the privilege to collaborate. I am proud of what we have accomplished together and excited to continue learning, building, and contributing to sustainable maize breeding, perennial ground cover systems, and controlled environment phenotyping.”

Summer research experience leads to growth

2025 REU Kylie Buchholz presents her research

One of our success stories at RegenPGC is our participation in Iowa State University‘s summer Research Experience for Undergraduates / Research Experience for Teachers programs. Each spring, Wartburg College hosts RICE Day, where students share research, internships, and creative endeavors they have completed. This past summer, I participated in the REU program and had the opportunity to work on Cameron Krumm’s research in Dr. Shuizhang Fei’s lab. Here is an update from Kylie Buchholz, a Wartburg student and a summer 2025 REU participant.

“After completing the REU, I presented this research at RICE Day this spring. This was a valuable opportunity for me that allowed me to share my experience with a wide range of faculty, students, and community members.

This engaged audience was deeply interested in my experience in the program. They were specifically interested in learning how this research connected to my future career in education. I was able to share multiple different lessons that I learned from my experience, many of which relate to the type of culture I want to create in my classroom.

By participating in this REU, I learned that having a positive attitude and cultivating a supportive community is essential for quality work to be produced. Additionally, this experience reinforced the importance of collecting many different data points before drawing a conclusion. These same things that I learned by participating in the REU are things that I will need to remember when I am shaping what I want my classroom to look like. Presenting the research I worked on this past summer at RICE Day was a great experience for me because it pushed me out of my comfort zone, helped me to reflect on what I want my classroom to be like, and allowed me to share this incredible research with those around me.”

Meet new grad student Zoe Gray

Zoe Gray headshot

Meet RegenPGC’s newest graduate stuent Zoe Gray. Zoe is a master’s student in soil science at the University of Missouri, where RegenPGC CoPd Morgan Davis serves as her advisor. Zoe previously obtained her bachelor’s in environmental science from the University of Missouri.

As an undergrad, Zoe joined the soil judging team, where I competed in numerous competitions that focused on soil chemistry, biology, morphology, physics, and genesis. During her time with the team, Zoe found a desire to learn more about soils and decided to pursue her master’s degree.

As a new member of the RegenPGC team (April 2026), Zoe’s research will focus on the hydraulic conductivity of soils within a perennial groundcover system compared to a system with no ground cover. She will be focusing on hydraulic conductivity as well as water retention curves.

Career Aspirations
After completing her Master’s, Zoe hopes to stay within the research realm and continue working in a lab space that strives to enhance agricultural methods with the integrity of the soil in mind.

Graduate Advisor
Dr. Morgan Davis (RegenPGC CoPd)

This is how we grow the future!

RegenPGC is a research program, and we define that term broadly, as we should. Every year, we help build the future by introducing existing and prospective science/STEM educators to our research portfolio.

We achieve this by participating in two crucial initiatives at Iowa State University: the Research Experience for Teachers (RET) and the Research Experience for Undergraduates (REU) programs. (https://lnkd.in/dC6HWes6). During the summer months, RegenPGC teachers and undergraduate interns become active members of our research team. This changes not only their lives but also positively impacts countless lives throughout their teaching careers as they apply their newfound knowledge directly to their classrooms.

Alex Haus, a 2025 Undergraduate Research Intern, is set to do the RegenPGC team proud when he presents his work at Wartburg College’s 15th RICE DAY (https://www.wartburg.edu/academic-affairs/rice/) on April 9, 2026. Alex’s poster, “How Perennial Groundcover Affects Maize Growth: Exploring Shade Avoidance Responses,” (https://www.regenpgc.org/wp-content/uploads/2026/03/RegenPGC-Poster-Template-med-QR.pdf), is a wonderful example of how interns can gain by working in a research team.

RegenPGC research team releases latest progress report

Great news! Our RegenPGC research team has just shared our latest progress report. This report, which highlights our research, education, and extension efforts from August to October 2025, is designed to be easy to follow.

This report keeps our agency funder, USDA-NIFA, in the loop, and it’s also a way for the public, who supports our work, to stay informed.

You can find the report on our website at https://www.regenpgc.org/wp-content/uploads/2026/02/2026-01-30-RegenPGC-YR-5-Q1-FINAL.pdf

Contact: Dr. Raj Raman, Iowa State University Dept. of Agriculture & BioSystems Engineering rajraman@iastate.edu

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