Since the 1980s, the Biskra region in Algeria's Sahara has undergone rapid agricultural change leading to territorial transformation. Horticultural production under greenhouses, associated with a rapid expansion of date palm plantations, has led to a tangible agricultural boom that is constantly pushing the boundaries of agricultural production and constitutes a true pioneering fringe. To understand the pioneering logics at wo...

Promoting innovation to improve both productivity and sustainability of irrigated farming systems is crucial for the first question addressed within the Sustainable Development Goals process led by the United Nations. This is a complex task that requires methods and processes which include a diversity of knowledge. For this reason, participatory approaches have been increasingly encouraged. A broad range of methods have been d...

Drip irrigation is widely used in a range of different farming systems. Farmers generally adapt drip irrigation systems to their specific conditions. Irrigation performance is usually related to the hydraulic parameters of drip irrigation, and is usually expressed as a single static value. We developed a comprehensive approach to account for irrigation performance as a dynamic process, which evolves continuously due to changes...

Saharan oases are frequently subjected to waterlogging due to the presence of shallow and salty groundwater and poor irrigation and drainage conditions. To overcome this problem in Tunisia, in 2002 an official modernization programme was implemented based on two operations: (i) increasing irrigation efficiency by building concrete irrigation canals to limit losses due to water percolation and (ii) controlling waterlogging and...

Many farmers, and the large set of downstream operators who depend on their farm products, have become dependent on groundwater resources, which are declining in many parts of the world. Farmers have to reduce water consumption by growing crops with lower water requirements, or apply optimal irrigation strategies. The strategies they choose can have major consequences for downstream operators and agro‐industries. This paper pr...

The Gharb plain in Morocco suffers from water excess in winter and from water deficit during the spring and summer. This explains the low profitability of the investments in irrigation agreed by the Moroccan state and low yields of winter crops. Furrow irrigation systems may be a way to increase water productivity by improving the surface drainage in winter, and by irrigating the crops efficiently in spring and summer. The aim...

In the irrigated scheme of West Mitidja, access to land and water is ensured through countless local informal arrangements. The assignees of small collective farms have subdivided the land informally, and rent out part of it to lessees, thereby circumventing current legislation. The surface irrigation system provides only a small proportion of irrigation water to farmers, who rely mainly on groundwater for irrigation. The resu...

We designed and implemented an action–research programme in large‐scale irrigation schemes in Algeria, Morocco and Tunisia, aiming to develop a regional network of competences by conducting research, training and development activities, and involving local actors. We worked on three issues: (i) the sustainability of North Africa's growing groundwater economy, (ii) the integration of environmental constraints in the management...

Salinity problems induced by irrigation are often presented in the literature as a threat that can only be managed at the irrigation scheme scale by installing subsurface drainage. On the other hand, salinity is a constraint that has often been successfully managed locally by farmers adapting their practices. However, the continuing expansion of irrigation with related water scarcity problems plus the increasing use of groundw...