Areas of Expertise
Soil, water, and nutrient conservation
Water quality
Cover crops
Regenerative cropping systems

Associate Professor of Agronomy and Soil Conservation
Purdue University
765-496-0256
sarmstro@purdue.edu

Dr. Armstrong is deeply rooted in the many aspects of soil science and is regarded as an expert in regenerative agricultural systems, cover crop technology and nutrient cycling. From his post-doctoral days with the USDA-ARS National Soil Erosion Research Laboratory to his current role directing Purdue University’s Soil Ecosystem and Nutrient Dynamics lab, Dr. Armstrong leads and supports research initiatives to help farmers better understand and nurture the dynamic soil ecosystem to improve the productivity of their crops. His work earned him the distinction of being the first native African American to be awarded tenure in the Agronomy Department at Purdue University.

He sees focusing on soybean research as a key to advancing regenerative farming. Soybean fields account for a significant portion of infield conservation practices such as reduced tillage and cover crops. A native of Louisiana, he also draws from his experience in sugarcane and cotton.

Fun Facts!

Dr. Armstrong is fiercely loyal to his Louisiana sports teams: Southern University, where he played running back; Louisiana State University; and the New Orleans Saints. His trifecta of favorite foods also hails from his home state – catfish, boiled seafood and crawfish fettuccine. Despite humble beginnings, Dr. Armstrong and his wife found their education has allowed them to provide their twin sons with a life of possibilities. They also spend their free time working in their community through their church and other organizations to improve life for underserved and under-loved people.