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Assessment of water-limited winter wheat yield potential at spatially contrasting sites in Ireland using a simple growth and development model

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dc.contributor.author Lynch, J.P.
dc.contributor.author Fealy, R.
dc.contributor.author Doyle, D.
dc.contributor.author Black, Lisa C.
dc.contributor.author Spink, J.
dc.date.accessioned 2021-07-28T13:41:07Z
dc.date.available 2021-07-28T13:41:07Z
dc.date.issued 2017-09-19
dc.identifier http://hdl.handle.net/20.500.12518/329
dc.identifier.citation Lynch, J. P., Fealy, R., Doyle, D., Black, L. and Spink, J. (2017) ‘Assessment of water-limited winter wheat yield potential at spatially contrasting sites in Ireland using a simple growth and development model’, Irish Journal of Agricultural and Food Research, 56(1), pp. 65–76. doi: 10.1515/ijafr-2017-0007. en_US
dc.identifier.issn 0791-6833
dc.identifier.issn 2009-9029
dc.identifier.uri https://www.jstor.org/stable/26609794
dc.description Publication history: Published online - 19 September 2017 en_US
dc.description.abstract Although Irish winter wheat yields are among the highest globally, increases in the profitability of this crop are required to maintain its economic viability. However, in order to determine if efforts to further increase Irish wheat yields are likely to be successful, an accurate estimation of the yield potential is required for different regions within Ireland. A winter wheat yield potential model (WWYPM) was developed, which estimates the maximum water-limited yield achievable, within the confines of current genetic resources and technologies, using parameters for winter wheat growth and development observed recently in Ireland and a minor amount of daily meteorological input (maximum and minimum daily temperature, total daily rainfall and total daily incident radiation). The WWYPM is composed of three processes: (i) an estimation of potential green area index, (ii) an estimation of light interception and biomass accumulation and (iii) an estimation of biomass partitioning to grain yield. Model validation indicated that WWYPM estimations of water-limited yield potential (YPw) were significantly related to maximum yields recorded in variety evaluation trials as well as regional average and maximum farm yields, reflecting the model’s sensitivity to alterations in the climatic environment with spatial and seasonal variations. Simulations of YPw for long-term average weather data at 12 sites located at spatially contrasting regions of Ireland indicated that the typical YPw varied between 15.6 and 17.9 t/ha, with a mean of 16.7 t/ha at 15% moisture content. These results indicate that the majority of sites in Ireland have the potential to grow high-yielding crops of winter wheat when the effects of very high rainfall and other stresses such as disease incidence and nutrient deficits are not considered. en_US
dc.description.sponsorship Funding for this study was provided by the Department of Agriculture, Food and the Marine, Ireland. en_US
dc.language.iso en en_US
dc.publisher Teagasc en_US
dc.rights Copyright 2017 The Authors. This is an open access article published under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Ireland (CC BY-NC-ND 3.0 IE) (https://creativecommons.org/licenses/by-nc-nd/3.0/ie/) en_US
dc.subject model en_US
dc.subject radiation use efficiency en_US
dc.subject yield gap en_US
dc.subject yield potential en_US
dc.title Assessment of water-limited winter wheat yield potential at spatially contrasting sites in Ireland using a simple growth and development model en_US


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