This paper critically analyses the potentials and frontiers of an agribusiness model developed along the arid coastal area of Peru. To make this model work, water from Andean rivers and lakes have been dammed and transferred to the coastal area through sophisticated and highly expensive hydraulic infrastructures. Although this ‘water transfer-agribusiness’ (WATA) model has attained its objectives to let the desert bloom and increase agro-exports from Peru, it does so at the cost of local environmental degradation, social unrest and gender disparities. These unintended consequences arose, in part, because the WATA model is anchored in ideologies of domination of nature and colonization of empty territories. The construction of water infrastructure, namely ‘Large Scale Irrigation’ (LSI) left aside the sociocultural, gender and environmental aspects that these kinds of interventions should include. Based on studies of water transfer from the Colca River to the ‘Pampas de Majes’ in the Arequipa region in the south-west of Peru, this paper analyses, from an interdisciplinary perspective, the consequences of such interventions on the food/water security and environmental health of the affected population.

As befits a CGIAR Challenge Program , the CPWF has welcomed a wide range of stake holders and partners in accord with their ability to achieve program goals. Decision on research investments (project selection) have been based on a competitive grants in which proposal quality was evaluated by an interdependent external panel. The usual weakness of a competitive grants approach - lack of coherence in research agenda has been address by Basin Focal Projects and synthesis research.

There are many options for enhancing food production from fish in managed aquatic systems.The most appropriate technology, however, will vary from place to place, and the conditions under which one technology is prefered over another are still not well defined.

This reports summarizes and synthesizes activities and achievements of the CGIAR Challenge Program on Water and Food (CPWF) through the end of 2007. The CPWF is an intiative of the CGIAR designed to take on the global challenge of water scarcity and food security. It is an international, multi-institutional researchfor- development initiative that brings together scientists, development specialists and river basin communities, and seeks to create and disseminate international public goods (IPGs) helpful in achieving food security, reducing poverty, improving livelihoods, reducing agriculture–related pollution, and enhancing environmental security. The CPWF conducts its research on water and food in nine ‘benchmark’ river basins, organized around five different themes. This work is being implemented through competitive-call projects, Basin Focal Projects (BFPs), small grant projects and synthesis research. This report is one example of the latter. Projects and outputs Part of the CPWF’s work has focused on increasing water productivity in rainfed environments. Achievements include the further development of conservation agriculture for no-till sowing into crop residues; “slash and mulch” to replace “slash and burn” practices in hillside agriculture; water harvesting systems for dryland locations; understanding livelihood vulnerability and farmers’ coping strategies; and developing and encouraging the distribution—through community ‘participatory’ varietal selection and seed schemes—of drought-tolerant sorghum, wheat, and other crops. Progress has also been made in increasing water productivity in irrigated and salt-affected environments, especially where water is scarce and there are opportunities to increase its productivity. Examples include the development and testing of salt-tolerant germplasm for rice and other crops to make more effective use of salt-affected areas; understanding how to use wastewater in irrigated peri-urban agriculture to produce safe and nutritious vegetables; and developing aerobic rice germplasm and management practices to produce more rice with less water.