The role of light in the emergence of weeds: using Camelina microcarpa as an example

Royo-Esnal, Aritz; Gesch, Russell W.; Forcella, Frank; Torra Farré, Joel; Recasens i Guinjuan, Jordi; Necajeva, Jevgenija

doi:https://doi.org/10.1371/journal.pone.0146079

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Issue date

2015

Author

Royo-Esnal, Aritz

Gesch, Russell W.

Forcella, Frank

Torra Farré, Joel

Recasens i Guinjuan, Jordi

Necajeva, Jevgenija

Suggested citation

Royo-Esnal, Aritz; Gesch, Russell W.; Forcella, Frank; Torra Farré, Joel; Recasens i Guinjuan, Jordi; Necajeva, Jevgenija; . (2015) . The role of light in the emergence of weeds: using Camelina microcarpa as an example. PLoS One, 2015, vol.10, núm. 12, e0146079. https://doi.org/10.1371/journal.pone.0146079.

Abstract

When modelling the emergence of weeds, two main factors are considered that condition this process: temperature and soil moisture. Optimum temperature is necessary for metabolic processes that generate energy for growth, while turgor pressure is necessary for root and shoot elongation which eventually

leads to seedling emergence from the soil. Most emergence models do not usually consider light as a residual factor, but it could have an important role as it can alter directly or indirectly the dormancy and germination of seeds. In this paper, inclusion of light as an additional factor to photoperiod and radiation in emergence models is explored and compared with the classical hydrothermal time (HTT) model using Camelina microcarpa as an example. HTT based on hourly estimates is also compared with that based on daily estimates. Results suggest that, although HTT based models are accurate enough for local applications, the precision of these models is improved when HTT is estimated hourly and solar radiation is included as a factor.

URI

http://hdl.handle.net/10459.1/49448

DOI

https://doi.org/10.1371/journal.pone.0146079

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PLoS One, 2015, vol.10, núm. 12, e0146079

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Except where otherwise noted, this item's license is described as cc-by, (c) Royo-Esnal et al., 2015