Present in the practice prosarrollo in EEA San Luis del Into between 2008 and 2012. The same presented various activities, prepare to intervene in the different trials, training in the recognition of species of natural grassland and sampling methods. The most important topic of the professional practice was the establishment "El Tapayo", which includes burning treatments, spraying with herbicides and air sowing of megathermal forage species on natural degraded pasture paddocks. As for the general results of the trial in "El Tapayo", they indicate: good chemical control of undesirable, increased coverage of native species of good forage value and variable results in the implementation of megathermics. The only conclusion that is available is when working in a natural pasture, available using the latest available templates for intervention in different sites. The professional practice managed to meet the objective of acquiring new elements to integrate new knowledge for my professional development.