The purpose of the grants is to train doctors by financing employment contracts, under the modality of the pre-doctoral contract, in order for researchers in training to carry out a doctoral thesis associated with a research project funded by grants for  proyectos de I+D.  of the State Subprogram of Knowledge Generation within the framework of the State Program of Knowledge Generation and Scientific and Technological Strengthening of the I+D+I System or aid for proyectos de I+D+I “ Retos de Investigación, Desarrollo e Innovación, oriented to the Retos de la Sociedad, respectively, in their 2019 calls, both within the framework of the Plan Estatal de I+D+I 2017-2020, or Proyecto I+D that is executed in a Centro de I+D that has obtained aid within the framework of the calls for Support for Severo Ochoa Centers of Excellence and María de Maeztu Units of Excellence, from the Ministerio de Ciencia , Innovación y Universidades entities corresponding to 2016, 2017, 2018 and 2019, or to a research project that is developed within a priority research line for the year 2020, set by the Instituto nacional de investigacion y Tecnologia Agraria y Alimentaria  and that is executed in a Centro público de I+D+I de investigacion agraria y alimentaria, dependent on an Autonomous Community, and participant in the Coordinating Commission for Agrarian Research INIA-CCAA.

At the same time, the aid is intended to finance the hiring, during a postdoctoral orientation period of a minimum duration of 6 months and a maximum of 12 months, of those doctoral students who obtain the title of doctor prior to month 43 from the start of the pre-doctoral aid, taking into account, in any case, the total aid cannot exceed 48 months.