Identifying the potential to apply deficit irrigation strategies in cotton using large mobile irrigation machines
Poster
Paper/Presentation Title | Identifying the potential to apply deficit irrigation strategies in cotton using large mobile irrigation machines |
---|---|
Presentation Type | Poster |
Authors | White, Simon C. (Author) and Raine, Steven R. (Author) |
Editors | Fischer, T., Turner, N., Angus, J., McIntyre, L., Robertson, M., Borrell, A. and Lloyd, D. |
Journal or Proceedings Title | Proceedings of the 4th International Crop Science Congress (ICSC 2004) |
Year | 2004 |
Place of Publication | Gosford NSW |
ISBN | 1920842217 |
Web Address (URL) of Paper | http://www.regional.org.au/au/asa/2004/poster/1/5/718_whitesc.htm |
Conference/Event | 4th International Crop Science Congress (ICSC 2004): New Directions for a Diverse Planet |
Event Details | 4th International Crop Science Congress (ICSC 2004): New Directions for a Diverse Planet Event Date 26 Sep 2004 to end of 01 Oct 2004 Event Location Brisbane, Australia |
Abstract | Irrigation water restrictions in the cotton industry have increased the focus on improving water use efficiency. regulated deficit irrigation (RDI) has been found to improve the water use of efficiency of cotton under drip irrigation. Partial rootzone drying (PRD) has been commercially implemented in grapevines and found to increase the water use efficiency for a variety of crops. This paper investigates the potential to improve cotton water use efficiency using RDI and PRD strategies applied with lateral move machines. A range of RDI treatments (71 % - 100 % evapotranspiration replaced) and a PRD and non-PRD treatment were applied to a crop of Sicot 180 during the 2002/2003 cotton season. No yield reduction was found between the fully irrigated and the 50% RDI treatment that received 1.05 ML/ha less water. Crop WUE was found to increase from 0.94 bales/ha to 1.17 bales/ha as the irrigation water applied was reduced from 100% to 79 % of evapotranspiration replacement. No difference in physiological growth and yield was found due to the implementation of the PRD treatment. Further work is required to confirm the RDI results, further explore the application of PRD strategies using these machines, and to more fully understand the physiological response of cotton to imposed soil moisture deficits applied either by volume (RDI) or space (PRD). |
Keywords | water conservation; water monitoring |
ANZSRC Field of Research 2020 | 300201. Agricultural hydrology |
300403. Agronomy | |
409901. Agricultural engineering | |
Public Notes | Copyright © 2004. Individual authors retain their copyright. Reproduction and the making available of this material for personal or non-commercial purposes is authorised, on condition that: This publication may be of assistance to you but the publisher, editors and authors do not guarantee that the publication is without flaw of any kind or is wholly appropriate for your particular purposes and therefore disclaim all liability for any error, loss or other consequence, which may arise from you relying on any information in this publication. First Published 2004 4th International Crop Science Congress |
Byline Affiliations | National Centre for Engineering in Agriculture |
Department of Agricultural, Civil and Environmental Engineering | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q0v0w/identifying-the-potential-to-apply-deficit-irrigation-strategies-in-cotton-using-large-mobile-irrigation-machines
Download files
460
total views171
total downloads4
views this month6
downloads this month