Principal Investigator of the National Institute of Agricultural Research (INIA Uruguay). I graduated from Agr.Ing. in 1996 and completed a master's degree in Animal Production in 1998, both at the National University of Mar del Plata (Argentina). I spent a year at the Macaulay Institute (now The James Hutton Institute, UK, 2001) as a British Council Fellow. I have a PhD in Agricultural Sciences (2004) from the Technische Universität München (Germany). My work has moved between the physiology, ecology and agronomy of forage plants. I have published some 45 articles on (i) use of carbon and nitrogen in plants as substrates for growth, respiration and storage/mobilization; (ii) diagnosis and effect of nitrogen and phosphorus deficiencies in interaction with hydric stress, (iii) effects of multiple symbioses – mycorrhizal fungi, endophytic fungi and nitrogen-fixing bacteria – on the establishment and functioning of mixtures of grasses and legumes, (iv) persistence of temperate grasses in subtropical environments, and (v) determinants of the balance between C3 and C4 species in planted pastures and natural fields in South America. I was director of the INIA Pasture and Forage Research Program until 2021, leading a team of 17-19 researchers with the aim of contributing to the design of profitable, biodiverse, stable, efficient pastoral production systems in nutrient cycling and with potential for organic carbon sequestration in the soil. ResearchGate