His main research concerns Gene, Botany, Lupinus, Genetics and Biochemistry. As a member of one scientific family, Carroll P. Vance mostly works in the field of Gene, focusing on Phaseolus and, on occasion, MYB. His Fodder study in the realm of Botany connects with subjects such as Food supply. His Lupinus study combines topics from a wide range of disciplines, such as Acid phosphatase, Cluster root, Shoot and Phosphorus deficiency. His Cluster root research is multidisciplinary, incorporating elements of Organic acid, Lateral root, Phosphoenolpyruvate carboxylase, Plant breeding and Adaptation. His study on Gene expression also encompasses disciplines like