Cristina Mori is an assistant professor of soil fertility in the Department of Soil and Waters at the Agronomy College of the University of the Republic in Montevideo, Uruguay. She obtained her title of agricultural engineer from the University of the Republic in Montevideo, Uruguay, in 2001 and a master's in soil science in 2010. She is nearing completion of her doctoral dissertation in the field of agricultural sciences. Their present research focuses on "Perennial pastures and annual winter cover crops in agricultural rotations: Effects on the nitrogen (N) balance and phosphorus (P) availability of the system." She has expertise in utilizing stable isotope methodologies to assess N use efficiency (comprising N derived from diverse sources, including fertilizers, soil, and cover crop residues) and biological N fixation (BNF). The Value of the effects of cover crops on soil fertility and mineral nutrition, residue decomposition, the solubilization of BNF and P by lupines and other species, the dynamics of P and N in the soil, the efficient and effective use of N and P, diversification, and the sustainability of agricultural farm systems are among her current and past research interests.