The Practice of Smallholder Irrigation
Author | : Emmanuel Manzungu |
Publisher | : |
Total Pages | : 260 |
Release | : 1996 |
Genre | : Technology & Engineering |
ISBN | : |
Download The Practice of Smallholder Irrigation Book in PDF, Epub and Kindle
Download The Practice Of Smallholder Irrigation full books in PDF, epub, and Kindle. Read online free The Practice Of Smallholder Irrigation ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Author | : Emmanuel Manzungu |
Publisher | : |
Total Pages | : 260 |
Release | : 1996 |
Genre | : Technology & Engineering |
ISBN | : |
Author | : C H. Batchelor |
Publisher | : |
Total Pages | : |
Release | : 1998 |
Genre | : |
ISBN | : |
Author | : Sara Finley |
Publisher | : CABI |
Total Pages | : 206 |
Release | : 2016-07-27 |
Genre | : Technology & Engineering |
ISBN | : 1780646860 |
Water is critical to all human activities, but access to this crucial resource is increasingly limited by competition and the effects of climate change. In agriculture, water management is key to ensuring good and sustained crop yields, maintaining soil health, and safeguarding the long-term viability of the land. Water management is especially challenging on smallholder farms in resource-poor areas, which tend to be primarily rainfed and thus highly dependent on unreliable rainfall patterns. Sustainable practices can help farmers promote the development of soils, plants and field surfaces to allow maximum retention of water between rains, and encourage the efficient use of each drop of water applied as irrigation. Especially useful for farmers' groups, agricultural extension workers, NGOs, students and researchers working with farmers in dryland areas, this comprehensive yet concise book is a practical and accessible resource for anyone interested in sustainable water management.
Author | : Azikiwe Isaac Agholor |
Publisher | : |
Total Pages | : 466 |
Release | : 2014 |
Genre | : Agricultural assistance |
ISBN | : |
Author | : B. Albinson |
Publisher | : IWMI |
Total Pages | : 30 |
Release | : 2002 |
Genre | : Farms, Small |
ISBN | : 9290904712 |
Smallholder irrigation systems–where farm sizes generally range from a fraction of a hectare to 10 hectares–pose special management problems, especially where the water available for irrigation is frequently less than the demand. The intensity of system adjustments required to meet individual farmer demands, and the administrative complexity of measuring and accounting water deliveries have generally proven excessive when attempting to meet “on demand†schedules, resulting in chaos (often characterized by illegal tampering with infrastructure, and vast differences of water use intensity at different locations in the system). The alternative–provision of a simple service, based on proportional sharing of available supplies on the basis of landholdings–has been resilient for many years over vast areas. The approach is based on a clear delineation between the part of the irrigation system that is actively managed (at various flow rates and water levels) and the part of the system that operates either at full supply level (with proportional division of water down to the level at which farmers rotate among their individual farms), or is completely shut. This operational design is known as a “structured†system, and has well-defined hydraulic characteristics, simplifying operation and management, in turn allowing a clearer definition of water entitlements and the responsibilities of agency staff and farmers. The approach is particularly suited to areas where water is scarce and discipline is needed to ration water among users. An additional benefit, which has been demonstrated in modeling studies using a well–proven model relating to water and yield, is that the productivity of water (which is more important than the more traditional productivity of land when water is scarce) is substantially increased when deficit irrigation is practiced–a widely observed and predictable response to rationed water supplies. Structured systems are most suited where water is scarce, clear definition of water entitlements is needed, management capacity is limited, and investment resources are limited. The approach to determining critical aspects of a structured system design is described in this report.
Author | : John Andreas Widtsoe |
Publisher | : |
Total Pages | : 554 |
Release | : 1914 |
Genre | : Irrigation |
ISBN | : |
Author | : W. Scheltema |
Publisher | : |
Total Pages | : |
Release | : 2003 |
Genre | : Farms, Small |
ISBN | : |
Author | : W. Scheltema |
Publisher | : |
Total Pages | : |
Release | : 2001 |
Genre | : Farms, Small |
ISBN | : 9789052850023 |
Author | : Emmanuel Manzungu |
Publisher | : |
Total Pages | : 202 |
Release | : 1999 |
Genre | : Farms, Small |
ISBN | : 9789058081452 |
Author | : Conrade Zawe |
Publisher | : |
Total Pages | : 353 |
Release | : 2006 |
Genre | : Irrigation |
ISBN | : 9789085045427 |