Staff publications (SAS)
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Browsing Staff publications (SAS) by Subject "Abstraction"
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Item Open Access Assessing optimum irrigation water use: additional agricultural and non- agricultural sectors. Environment Agency Science Report - SC040008/SR1(2008-04-01T00:00:00Z) Knox, Jerry W.; Weatherhead, E. K.; Rodriguez Diaz, J. A.The Water Act (2003) and its preceding legislation requires the Environment Agency to assess and justify authorisations for irrigation abstraction, whether for agricultural, horticultural, amenity, sports turf or other use. A previous study, Optimum use of water for industry and agriculture (W6-056), has provided a framework for assessing the ‘optimum’ or ‘reasonable’ needs of a wide range of crops. In this study, water use was analysed for a range of other agricultural and non-agricultural sectors dependent on irrigation, but not included in the W6-056 study. These include some sectors where new authorisations for trickle will be required, as well as for existing and new spray irrigation abstractions. The sectors considered include golf courses, racecourses, turf production, frost protection, horticultural nursery stock, pot plant and bedding plant production and glasshouse proItem Open Access A comparative assessment of trickle and spray irrigation: Science Report - SC040008/SR3, Environment Agency(2007-06-01T00:00:00Z) Knox, Jerry W.; Weatherhead, E. K.; Rodriguez Diaz, J. A.Recent research (Assessing optimum irrigation water use: additional agricultural and nonagricultural sectors SC040008/SR1) complements existing guidelines (W6- 056) for the Environment Agency to assess and set the ‘optimum’ or ‘reasonable’ irrigation needs for an abstraction licence, across a wide range of agricultural, horticultural, amenity and sports turf sectors. For those abstractors with time-limited licences, demonstrating efficient use of water is one of three tests required by the Environment Agency for successful licence renewal. However, the definition of efficiency under UK conditions of supplemental irrigation has been the subject of widespread debate between academics, the regulator, industry and individual abstractors. To improve our understanding of efficiency, and particularly the differences between overhead (spray) and micro (trickle) irrigation, this report offers a comparative study of the efficiency of water use with these contrasting irrigation