Several external factors affecting the productivity of crops, and amongst which, soil moistureis a key factor. Based on this statement, this paper proposes the implementation of a system monitoring of soil moisture, developed with a focus on low cost. For this purpose, we have used the Arduino as a development platform. The proposed architecture in this study proved to be quite feasi blefors mall agricultural areas,such as conservatories. In the future work, the architecture will be expanded to control the irrigation of large agricultural areas.