Nowadays, water resource management is more and more important. Modern agriculture is a large-scale water consumer, which must adjust as well as possible its consumption in adequacy with its needs, while preserving the natural resources and the quality of the productions. Information and Communication Technologies (ICT) offer solutions to make possible a finer approach of the irrigation of the crop by facilitating the work of the farmers. The work exposed in this article shows the contribution of ICT to manage irrigation pivots in a farm. The technologies used are ad hoc wireless networks and Web technologies. The farmer can, via the Internet, ensure the monitoring and the remote control of the irrigation equipment, in a more precise way and in conformance with the crop's requirements.