ABSTRACT
Crop water uptake and subsequent root distribution/depth within the soil profile are essential parameters for irrigation scheduling, fertigation management, soil tillage operation, for designing on farm irrigation and drainage networks, adequate irrigation and/or optimal depth of buried drains. Moreover, a thorough understanding of root distribution is required to determine the appropriate location of soil moisture sensors. These sensors should be installed at representative soil depth where root density and activities are the highest. Indeed, the optimal plant growth is linked to the water status within the soil profile and to the size of the moistened bulb [l1]. The desired moistened bulb should encompass the rooted soil volume [10, 20].
