M. Wayne Ebelhar graduated from the University of Kentucky with BS (1974) and MS (1977) degrees in Agriculture. He received a PhD in Agriculture-Agronomy (1981) from the University of Illinois and then accepted a research position with Mississippi State University at the Delta Research and Extension Center in Stoneville. He began his career in November 1980 with early research emphases on cotton and rice fertility. Over the years, he has worked on most of the row crops in the Mississippi Delta and on oilseed crops. His extensive research program has addressed nutrient management—primarily, nitrogen, potassium, phosphorus, sulfur, and zinc. In the mid-1990, his research focused on spatial variability and the relationship between soil nutrients and other soil characteristics and yield. This led to a shift to evaluating crop rotations, particularly cotton and corn. The Delta Branch Experiment Station (now the Delta Research and Extension Center) reached a milestone in 2004 when it celebrated its 100-year anniversary. The same year, the Centennial Rotation was established as a multiyear crop rotation field with cotton–corn–soybean systems. Dr. Ebelhar’s primary interests are crop yield, nutrient uptake and removal, and the economic implications of rotations. He has spent his entire research career at the Delta Research and Extension Center at Stoneville in soil fertility/crop production.
