On behalf of the International Society for Horticultural Science (ISHS), International Technical Cooperation Network on Cactus (FAO-ICARDA CACTUSNET), Argentine Institute for Arid Land Research (IADIZA-CCT CONICET Mendoza), Faculty of Agricultural Sciences (National University of Cuyo), Faculty of Exact, Physical and Natural Sciences (National University of San Juan) and the Organizing Committee we cordially invite you to attend the IX International Congress on Cactus Pear and Cochineal and IX General Meeting of CACTUSNET, which will be held in Mendoza (Argentina) at Information and Communication Center – CICUNC of the National University of Cuyo, University Center, Mendoza, from 26 to 29 September 2016.