Summer growth rates and annual yields of perennial ryegrass (Lolium perenne L.) in the Upper North Island are expected to decline as a result of climate change
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Published:2023-05-16
Issue:
Volume:
Page:31-40
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ISSN:2463-2880
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Container-title:Journal of New Zealand Grasslands
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language:
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Short-container-title:Journal of NZ Grasslands
Author:
Babylon Andrea,Woodward Simon,Beukes Pierre
Abstract
Evaluating the ability of perennial ryegrass to continue underpinning New Zealand’s low-cost dairy production systems under future climate change scenarios requires a modelling approach. In this study, climate projections for different climate change scenarios were used in the BASGRA pasture model to predict changes in annual yields and seasonal pasture growth rate patterns of perennial ryegrass. These predictions, including uncertainty, were made for the years 2010-2014, 2040- 2044 and 2090-2094 in 14 dairy-dominant subregions in the Upper North Island of New Zealand. The suitability of perennial ryegrass is expected to decline in the future across all subregions, with worse outcomes expected under higher atmospheric greenhouse gas levels. Winter is expected to be the season least affected by climate change and summer the most affected. Late-winter/spring is predicted to become the main growing season, followed by late-autumn/early-winter. The ability offarmers to adapt their farming practices is essential in remaining profitable and internationally competitive.
Publisher
New Zealand Grassland Association
Subject
Nature and Landscape Conservation,Plant Science,Soil Science,Agronomy and Crop Science,Ecology, Evolution, Behavior and Systematics
Cited by
1 articles.
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