Half way structured problems are those that have elements or relations than sometime they are out of control. But always they prove to be difficult in a time of presenting solution alternatives without the benefit of a methodology in order to such end designed. At the present time there are methodologies that they allow us to discuss these problems and to define its structure to what later we can understand its behaviour. That’s why this argument that we make use in this study to discuss the problem that at present rice sower show us in the region and the country, where we made use of a methodology that is not new in his appearing, but even well, in his application in our midway, I mean specifically to the Dynamic of System, as a methodology to study complex systems, and proposing solutions alternatives The activity ric e sower in her Region San Martin and the country always has been i...