Research considers the influence of the abiotic environment on crop growth, development, and yield.
Physiology studies include plant water relations, symbiotic nitrogen fixation, carbon accumulation, and developmental processes. Theoretical analyses and simple model development have been undertaken to better understand the interactions between the environment and crops. These models have been used to perform crop yield assessments at a number of locations worldwide. Research Associate, School of Forestry, Duke University, October 1971 to October 1973. Plant Physiologist, Agricultural Research Service, U.S. Dept.