This article presents technical clarifications on pasture irrigation. Its scientific relevance lies in bringing to the academic discussion a subject that is much talked about and little studied in scientific terms, leaving many gaps to be filled by scientific research, based on empirical data. Its social relevance lies in making available to producers and technicians data and arguments that improve the search for greater and deeper clarifications in this regard. This is a bibliographical, exploratory research, based on reports collected in the field about the implementation, use and management of irrigation in pastures and, from this, a solid argument is made, presenting the benefits and risks of its use. Benefits arising from investments in the field of agriculture must be interpreted from the perspective of a specific science, Rural Administration, making use of precise economic analyses, comparing data and results. The conclusions reached are that pasture irrigation may even prove to be viable, as long as it is accompanied by qualified and professional technical assistance, analyzing and comparing costs over many years, requiring constant studies and a range of knowledge technician in different areas of knowledge, such as soil, climate, climatology, meteorology, animal bioclimatology, plant physiology.