Prof. Dr. Hans Raj Gheyi has a degree in Agriculture from the University of Udai Pur, India (1963), a Master's degree in Soil Sciences from Punjab Agricultural University, India (1965), and a PhD in Agricultural Sciences from the Universite Catholique de Louvain / Belgium (1974). He is currently a retired professor (full) at the Federal University of Campina Grande. He worked as a Visiting Professor (2010-2020) at the Federal University of Recôncavo da Bahia (UFRB), Editor-in-Chief of the Brazilian Journal of Agricultural and Environmental Engineering (Agriambi) at the Federal University of Campina Grande. He has experience in Agricultural Engineering, with an emphasis on Water and Soil Engineering, working mainly on the following topics: salinity, irrigation, fertility, the soil–water–plant relationship, saline stress, plant tolerance to water deficit, water quality and water reuse.