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Simulating irrigation requirements in Lanoraie, Quebec using AquaCrop: optimizing agricultural needs in an ecologically-sensitive environment
Authors: Meaghan Kilmartin,
Chandra Madramootoo
Identifier: CSBE23143
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Published in: CSBE-SCGAB Technical Conferences » AGM Lethbridge 2023
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Description: The use of modelling tools to predict the daily soil water balance has become widespread in the development of irrigation management strategies. These predictions provide insights at the field scale and can also be used for regional water resource management and planning. This study is focused on the water needs of irrigators in Lanoraie, Quebec. In this region, there are competing water demands between the major irrigated high value crops and an ecologically-sensitive wetland complex. The growing season is expected to be increasingly drier and more variable due to climate change. Thus, to balance the agricultural and ecological water needs of the region, it is necessary to optimize irrigation requirements. This study estimates the net irrigation requirements of the major irrigated crops in Lanoraie for the 1-in-25 dry and average years using the AquaCrop model. AquaCrop is also used to predict the effect of climate change on irrigation requirements. Field data from potato, squash, strawberry, and cranberry fields over the 2022 growing season and a sensitivity analysis are used to refine the simulations according to soil water content of the rootzone. Three irrigation treatments are investigated, comprising full irrigation, deficit irrigation, and no irrigation, for the crops and soil types of the region. The soil water content, net irrigation requirement, water productivity, and crop yield are simulated for historical and future climate scenarios. The resulting water needs of each crop are mapped over the respective field areas and combined into water supply units. Potential water supply scenarios are also discussed.
Keywords: Irrigation, Crop Modeling, AquaCrop, Water Resources Management
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Pages -
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Date: 2023-07-23
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Conference name: CSBE/SCGAB 2023 Annual Conference, Lethbridge, Alberta, 23-26 July 2023.
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Type: Presentation
Format:
Publication type: Text.Abstract
Source:
Relation:
Coverage: North_America
Language 1: en
Language 2:
Rights: Canadian Society for Bioengineering
Notes:
Other files:
DOI:
Description: The use of modelling tools to predict the daily soil water balance has become widespread in the development of irrigation management strategies. These predictions provide insights at the field scale and can also be used for regional water resource management and planning. This study is focused on the water needs of irrigators in Lanoraie, Quebec. In this region, there are competing water demands between the major irrigated high value crops and an ecologically-sensitive wetland complex. The growing season is expected to be increasingly drier and more variable due to climate change. Thus, to balance the agricultural and ecological water needs of the region, it is necessary to optimize irrigation requirements. This study estimates the net irrigation requirements of the major irrigated crops in Lanoraie for the 1-in-25 dry and average years using the AquaCrop model. AquaCrop is also used to predict the effect of climate change on irrigation requirements. Field data from potato, squash, strawberry, and cranberry fields over the 2022 growing season and a sensitivity analysis are used to refine the simulations according to soil water content of the rootzone. Three irrigation treatments are investigated, comprising full irrigation, deficit irrigation, and no irrigation, for the crops and soil types of the region. The soil water content, net irrigation requirement, water productivity, and crop yield are simulated for historical and future climate scenarios. The resulting water needs of each crop are mapped over the respective field areas and combined into water supply units. Potential water supply scenarios are also discussed.
Keywords: Irrigation, Crop Modeling, AquaCrop, Water Resources Management
Résumé:
Mots-clés:
Citation:
Volume:
Issue:
Pages -
Contributor:
Date: 2023-07-23
Technical field:
Conference name: CSBE/SCGAB 2023 Annual Conference, Lethbridge, Alberta, 23-26 July 2023.
Session name:
Other information:
Type: Presentation
Format:
Publication type: Text.Abstract
Source:
Relation:
Coverage: North_America
Language 1: en
Language 2:
Rights: Canadian Society for Bioengineering
Notes:
Other files:
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