Challinor, AJ, Wheeler, TR, Craufurd, P et al. (1 more author) (2005) Simulation of the impact of high temperature stress on annual crop yields. Agricultural and Forest Meteorology, 135 (1-4). 180 - 189. ISSN 0168-1923
Abstract
Brief periods of high temperature which occur near flowering can severely reduce the yield of annual crops such as wheat and groundnut. A parameterisation of this well-documented effect is presented for groundnut (i.e. peanut; Arachis hypogaeaL.). This parameterisation was combined with an existing crop model, allowing the impact of season-mean temperature, and of brief high-temperature episodes at various times near flowering, to be both independently and jointly examined. The extended crop model was tested with independent data from controlled environment experiments and field experiments. The impact of total crop duration was captured, with simulated duration being within 5% of observations for the range of season-mean temperatures used (20–28 °°C). In simulations across nine differently timed high temperature events, eight of the absolute differences between observed and simulated yield were less than 10% of the control (no-stress) yield. The parameterisation of high temperature stress also allows the simulation of heat tolerance across different genotypes. Three parameter sets, representing tolerant, moderately sensitive and sensitive genotypes were developed and assessed. The new parameterisation can be used in climate change studies to estimate the impact of heat stress on yield. It can also be used to assess the potential for adaptation of cropping systems to increased temperature threshold exceedance via the choice of genotype characteristics.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | (c) 2005 Elsevier B.V. All rights reserved. This is an author produced version of a paper published in Agricultural and Forest Meteorology. Uploaded in accordance with the publisher's self-archiving policy |
Keywords: | Climate change; Crop simulation models; Crop yield; High temperature stress; Groundnut |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) > Environment (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 13 Mar 2014 11:40 |
Last Modified: | 15 Sep 2014 01:47 |
Published Version: | http://dx.doi.org/10.1016/j.agrformet.2005.11.015 |
Status: | Published |
Publisher: | Elsevier Masson |
Identification Number: | 10.1016/j.agrformet.2005.11.015 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:78036 |