Expanded Potential Growing Region and Yield Increase for <i>Agave americana</i> with Future Climate

Rising crop risk for farmers and greater subsidy costs for governments are both associated with changing climatic conditions, including increased water scarcity. The resilience of <i>Agave</i> spp. in both hot and dry conditions, combined with their wide range of uses, position these pla...

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Autores principales:	Sarah C. Davis, John T. Abatzoglou, David S. LeBauer
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	water use efficiency agriculture resilience crop production CAM arid Agriculture S
Acceso en línea:	https://doaj.org/article/4a52f455f442482abf1926c93f747d3f
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spelling	oai:doaj.org-article:4a52f455f442482abf1926c93f747d3f2021-11-25T16:02:50ZExpanded Potential Growing Region and Yield Increase for <i>Agave americana</i> with Future Climate10.3390/agronomy111121092073-4395https://doaj.org/article/4a52f455f442482abf1926c93f747d3f2021-10-01T00:00:00Zhttps://www.mdpi.com/2073-4395/11/11/2109https://doaj.org/toc/2073-4395Rising crop risk for farmers and greater subsidy costs for governments are both associated with changing climatic conditions, including increased water scarcity. The resilience of <i>Agave</i> spp. in both hot and dry conditions, combined with their wide range of uses, position these plants as novel high-yielding crops suitable for both (i) a warming climate and (ii) agricultural regions with finite water resources. A simple model of the physiological response of <i>Agave americana</i> to variations in solar radiation, temperature, and precipitation was used to predict <i>A. americana</i> yields globally at a 4 km spatial resolution for both contemporary climate and high-end warming scenarios. The potential growing region for <i>A. americana</i> expanded by 3–5% (up to 3 million ha) and potential biomass production increased by 4–5% (up to 4 Gt of additional biomass) with climate warming scenarios. There were some declines in biomass with the climate warming projected in smaller dispersed locations of tropical South America, Africa, and Australia. The amount of water required for optimal <i>A.</i> <i>americana</i> yield is less than half of the current water required for other crops grown in semi-arid agricultural regions of the southwestern US, and a similar low water demand can be expected in other semi-arid regions of the world. Rock mulching can further reduce the need for irrigation and increase suitable cropland area for <i>A.</i> <i>americana</i> by 26–30%. We show that >10 Mg ha<sup>−1</sup> y<sup>−1</sup> of <i>A. americana</i> biomass could be produced on 27 million ha of cropland without requiring irrigation. Our results suggest that cultivation of <i>A. americana</i> can support resilient agriculture in a future with rising temperatures and water scarcity.Sarah C. DavisJohn T. AbatzoglouDavid S. LeBauerMDPI AGarticlewater use efficiencyagricultureresiliencecrop productionCAMaridAgricultureSENAgronomy, Vol 11, Iss 2109, p 2109 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	water use efficiency agriculture resilience crop production CAM arid Agriculture S
spellingShingle	water use efficiency agriculture resilience crop production CAM arid Agriculture S Sarah C. Davis John T. Abatzoglou David S. LeBauer Expanded Potential Growing Region and Yield Increase for <i>Agave americana</i> with Future Climate
description	Rising crop risk for farmers and greater subsidy costs for governments are both associated with changing climatic conditions, including increased water scarcity. The resilience of <i>Agave</i> spp. in both hot and dry conditions, combined with their wide range of uses, position these plants as novel high-yielding crops suitable for both (i) a warming climate and (ii) agricultural regions with finite water resources. A simple model of the physiological response of <i>Agave americana</i> to variations in solar radiation, temperature, and precipitation was used to predict <i>A. americana</i> yields globally at a 4 km spatial resolution for both contemporary climate and high-end warming scenarios. The potential growing region for <i>A. americana</i> expanded by 3–5% (up to 3 million ha) and potential biomass production increased by 4–5% (up to 4 Gt of additional biomass) with climate warming scenarios. There were some declines in biomass with the climate warming projected in smaller dispersed locations of tropical South America, Africa, and Australia. The amount of water required for optimal <i>A.</i> <i>americana</i> yield is less than half of the current water required for other crops grown in semi-arid agricultural regions of the southwestern US, and a similar low water demand can be expected in other semi-arid regions of the world. Rock mulching can further reduce the need for irrigation and increase suitable cropland area for <i>A.</i> <i>americana</i> by 26–30%. We show that >10 Mg ha<sup>−1</sup> y<sup>−1</sup> of <i>A. americana</i> biomass could be produced on 27 million ha of cropland without requiring irrigation. Our results suggest that cultivation of <i>A. americana</i> can support resilient agriculture in a future with rising temperatures and water scarcity.
format	article
author	Sarah C. Davis John T. Abatzoglou David S. LeBauer
author_facet	Sarah C. Davis John T. Abatzoglou David S. LeBauer
author_sort	Sarah C. Davis
title	Expanded Potential Growing Region and Yield Increase for <i>Agave americana</i> with Future Climate
title_short	Expanded Potential Growing Region and Yield Increase for <i>Agave americana</i> with Future Climate
title_full	Expanded Potential Growing Region and Yield Increase for <i>Agave americana</i> with Future Climate
title_fullStr	Expanded Potential Growing Region and Yield Increase for <i>Agave americana</i> with Future Climate
title_full_unstemmed	Expanded Potential Growing Region and Yield Increase for <i>Agave americana</i> with Future Climate
title_sort	expanded potential growing region and yield increase for <i>agave americana</i> with future climate
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/4a52f455f442482abf1926c93f747d3f
work_keys_str_mv	AT sarahcdavis expandedpotentialgrowingregionandyieldincreaseforiagaveamericanaiwithfutureclimate AT johntabatzoglou expandedpotentialgrowingregionandyieldincreaseforiagaveamericanaiwithfutureclimate AT davidslebauer expandedpotentialgrowingregionandyieldincreaseforiagaveamericanaiwithfutureclimate
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Expanded Potential Growing Region and Yield Increase for <i>Agave americana</i> with Future Climate

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