Alejandro Radrizzani, Agricultural Sciences of Buenos Aires University and PhD of The University of Queensland, Australia. He is researcher from the Federal Institute of Agricultural Technology (INTA), where he was involved in extension projects (1992-1999) and then, in research projects (2000 up to date) associated to National and international research teams and producers from the South-american Chaco region and from North-Eastern Australia. He was the head of the Animal Research Institute of the Chaco region, INTA (2009-2019). Since 2020, he han been the Coordinator of the National Program of Forrages, Pastures and Grasslands (INTA). His expertise is in tropical pastures production and utilization, forages legumes trees, and ecosistem services in pastoral and silvopastoral systems. He is Professor of postgraduate courses at the University of Tucumán and Santiago del Estero. He is author of more than 33 scientific papers in pastures and silvopastoral systems, articles and videos related to pastures in the local media. He has been expositor in national and international conferences.