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

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2015Author
Gesch, Russell W.
Forcella, Frank
Necajeva, Jevgenija
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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.
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Show full item recordAbstract
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.
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PLoS One, 2015, vol.10, núm. 12, e0146079European research projects
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Except where otherwise noted, this item's license is described as cc-by, (c) Royo-Esnal et al., 2015
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