Articles | Volume 23, issue 4
https://doi.org/10.5194/nhess-23-1355-2023
https://doi.org/10.5194/nhess-23-1355-2023
Research article
 | 
11 Apr 2023
Research article |  | 11 Apr 2023

Grain size modulates volcanic ash retention on crop foliage and potential yield loss

Noa Ligot, Patrick Bogaert, Sébastien Biass, Guillaume Lobet, and Pierre Delmelle

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Cited articles

Al Mamun Hossain, S. A., Lixue, W., Chen, T., and Li, Z.: Leaf area index assessment for tomato and cucumber growing period under different water treatments, Plant Soil Environ., 63, https://doi.org/10.17221/568/2017-PSE, 2017. 
Arnalds, O.: The influence of volcanic tephra (ash) on ecosystems, in: Adv. Agron., edited by: Sparks, D. L., Academic Press, 331–380, https://doi.org/10.1016/B978-0-12-407685-3.00006-2, 2013. 
Ayris, P. M. and Delmelle, P.: The immediate environmental effects of tephra emission, B. Volcanol., 74, 1905–1936, https://doi.org/10.1007/s00445-012-0654-5, 2012. 
Bagheri, G. and Bonadonna, C.: Chapter 2 – Aerodynamics of volcanic particles: characterization of size, shape, and settling velocity, in: Volcanic Ash, edited by: Mackie, S., Cashman, K., Ricketts, H., Rust, A., and Watson, M., Elsevier, 39–52, https://doi.org/10.1016/B978-0-08-100405-0.00005-7, 2016. 
Benson, H. and Benson, H. (Ed.): Physique I: Mécanique, 5th edn., De Boeck Supérieur, ISBN 9782761354998, 2015. 
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Short summary
Assessing risk to crops from volcanic ashfall is critical to protect people who rely on agriculture for their livelihood and food security. Ash retention on crop leaves is a key process in damage initiation. Experiments with tomato and chilli pepper plants revealed that ash retention increases with decreasing ash grain size and is enhanced when leaves are pubescent or their surfaces are wet. We propose a new relationship to quantify potential crop yield loss as a function of ash retention.
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