Prof. Dr. Patrick H. Brown is a Distinguished Professor in the Department of Plant Sciences at the University of California Davis, Davis, CA, USA. He obtained a BSc in Agricultural Sciences and Biochemistry from the University of Adelaide and a PhD in Agronomy and International Agricultural Development from Cornell University in 1988. Prof. Dr. Patrick H. Brown is recognized globally as a leader in both basic and applied plant nutrition research with notable contributions to the function, transport, and management of nickel and boron, and significant contributions to research on potassium, nitrogen, zinc, foliar fertilization, salinity, and biostimulants.