Managing water in rainfed agriculture - The need for a paradigm shift
Impact factor: 2.848 (Year: 2010)
MetadataShow full item record
Johan Rockström, Louise Karlberg, Suhas Wani, Jennie Barron, Nuhu Hatibu, Theib Oweis, Adriana Bruggeman, Hamid Farahani, Zhu Qiang. (10/4/2010). Managing water in rainfed agriculture - The need for a paradigm shift. Agricultural Water Management, 97(4), pp. 543-550.
Rainfed agriculture plays and will continue to play a dominant role in providing food and livelihoods for an increasing world population. We describe the world's semi-arid and dry sub-humid savannah and steppe regions as global hotspots, in terms of water related constraints to food production, high prevalence of malnourishment and poverty, and rapidly increasing food demands. We argue that major water investments in agriculture are required. In these regions yield gaps are large, not due to lack of water per se, but rather due to inefficient management of water, soils, and crops. An assessment of management options indicates that knowledge exists regarding technologies, management systems, and planning methods. A key strategy is to minimise risk for dry spell induced crop failures, which requires an emphasis on water harvesting systems for supplemental irrigation. Large-scale adoption of water harvesting systems will require a paradigm shift in Integrated Water Resource Management (IWRM), in which rainfall is regarded as the entry point for the governance of freshwater, thus incorporating green water resources (sustaining rainfed agriculture and terrestrial ecosystems) and blue water resources (local runoff). The divide between rainfed and irrigated agriculture needs to be reconsidered in favor of a governance, investment, and management paradigm, which considers all water options in agricultural systems. A new focus is needed on the meso-catchment scale, as opposed to the current focus of IWRM on the basin level and the primary focus of agricultural improvements on the farmer's field. We argue that the catchment scale offers the best opportunities for water investments to build resilience in small-scale agricultural systems and to address trade-offs between water for food and other ecosystem functions and services.
Showing items related by title, author, creator and subject.
Title: Field level data collection on conjunctive use of canal water, drainage water and groundwater Author(s)Awan, UsmanDate: 2015-12-15Type: DatasetStatus: Open accessThe dataset is the results of a data collection on conjunctive use of canal water, drainage water and groundwater in Uzbekistan.
Title: Soil Texture and Cultivar Effects on Rice (Oryza sativa, L.) Grain Yield, Yield Components and Water Productivity in Three Water Regimes Date: 2016-03-15Type: Journal ArticleStatus: Open accessThe objective of this study was to determine the effects of water regime/soil condition (continuous flooding, saturated, and aerobic), cultivar (‘Cocodrie’ and ‘Rondo’), and soil texture (clay and sandy loam) on rice grain ...
Title: Evaluation plant water budget of orphan grain legume species in lysimeters and of traits related to plant water budget in the LeasyScan facility Author(s)Vadez, VincentDate: 2017-01-31Type: ReportStatus: Open accessFor the first three experiments in lysimeter the genetic material consisted of 22 genotypes, 13 of lablab, horsegram, moth bean, rice bean and cowpea, which were benchmarked to 9 genotypes across mungbean, soybean, peanut ...