Managing spatial and temporal variability in irrigated agriculture through adaptive control

Smith, R. J. and Raine, Steven R. and McCarthy, Alison and Hancock, Nigel (2009) Managing spatial and temporal variability in irrigated agriculture through adaptive control. Australian Journal of Multi-Disciplinary Engineering, 7 (1). pp. 79-90. ISSN 1448-8388

Abstract

Spatial variability in crop production occurs as a result of spatial and temporal variations in soil structure and fertility; soil physical, chemical and hydraulic properties, irrigation applications, pests and diseases, plant genetics and local microclimate. This review paper argues that infield variability can be managed and the efficiency of irrigation water use increased by spatially variable application of irrigation water to meet the specific needs of individual management zones (areas of crop whose properties are relatively homogenous). Key areas identified requiring interdisciplinary research are: the prescription of irrigated crop water requirements; strategies for quantifying and managing spatial variability; and the development of adaptive systems for control of water application at appropriate temporal intervals and spatial scales. Example strategies for the implementation of adaptive control for furrow irrigation and large mobile irrigation machines are described.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to paper due to publisher copyright restrictions.
Depositing User: Prof Rod Smith
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Agricultural, Civil and Environmental Engineering
Date Deposited: 08 Mar 2010 01:59
Last Modified: 02 Jul 2013 23:22
Uncontrolled Keywords: real-time control; precision irrigation; prescription irrigation; spatially varied irrigation; site-specific irrigation
Fields of Research (FOR2008): 07 Agricultural and Veterinary Sciences > 0701 Agriculture, Land and Farm Management > 070104 Agricultural Spatial Analysis and Modelling
09 Engineering > 0999 Other Engineering > 099901 Agricultural Engineering
07 Agricultural and Veterinary Sciences > 0799 Other Agricultural and Veterinary Sciences > 079901 Agricultural Hydrology (Drainage, Flooding, Irrigation, Quality, etc.)
Socio-Economic Objective (SEO2008): D Environment > 96 Environment > 9609 Land and Water Management > 960905 Farmland, Arable Cropland and Permanent Cropland Water Management
B Economic Development > 82 Plant Production and Plant Primary Products > 8298 Environmentally Sustainable Plant Production > 829899 Environmentally Sustainable Plant Production not elsewhere classified
URI: http://eprints.usq.edu.au/id/eprint/5544

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