Prof. Omkar has been associated with the Department of Zoology, University of Lucknow as a faculty for the past 32 years and a former Head of Department. His specialization is Entomology in which he specifically concentrates on agricultural pests, dealing with the aphids and their natural enemy complex, specifically ladybird beetles. He is author and editor of several books, including Industrial Entomology, Pests and Their Management, and Sucking Pests of Crops, published by Springer Nature. He is an elected Fellow of The National Academy of Sciences, India (FNASc) besides many more.