|Author:||McCarthy, A. C. ; Hancock, N. H. ; Raine, S. R.|
|Book Group Author:||NA|
Irrigation control strategies may be used to improve the site-specific irrigation of cotton via lateral move and centre pivot irrigation machines. A simulation framework 'VARIwise' has been created to aid the development, evaluation and management of spatially and temporally varied site-specific irrigation control strategies. VARIwise accommodates sub-field-scale variations in all input parameters using a 1 m2 cell size, and permits application of differing control strategies within the field, as well as differing irrigation amounts down to this scale. In this paper the motivation and objectives for the creation of VARIwise are discussed, the structure of the software is outlined and an example of the use and utility of VARIwise is presented. Three irrigation control strategies have been simulated in VARIwise using a cotton model with a range of input parameters including spatially variable soil properties, non-uniform irrigation application, three weather profiles and two crop varieties. The simulated yield and water use efficiency were affected by the combination of input parameters and the control strategy implemented.
|Pages:||117 - 128|
|Journal:||Computers and Electronics in Agriculture|
computer simulation, computer software, cotton, crop yield,irrigation, plant water relations, spatial variation, temporalvariation, water use efficiency, Gossypium, Malvaceae, Malvales,dicotyledons, angiosperms, Spermatophyta, plants, eukaryotes, computerprograms, watering, Information and Documentation (CC300), Field Crops(FF005) (New March 2000), Plant Water Relations (FF062), PlantProduction (FF100), Soil Water Management (Irrigation and Drainage)(JJ800) (Revised June 2002) [formerly Soil Water Management],Mathematics and Statistics (ZZ100)