[en] In spite of the fact that the world population grows every day and with her the necessity of an appropriate supply of foods, most of the actions tending to propitiate the increase of the readiness of foods have left aside the consideration of the problem of the losses post-harvest and they have been centered in such actions as the amplification of the agricultural frontier and the search of the increment of the production. The author mentions some processes, the social and economic impact, and storage structure and plagues control