Increase priority to fibrous root growth under water stress

lpmorenoc commented 4 years ago

This is represented by the LINTUL model and I think it is supported by Connor.

lpmorenoc commented 3 years ago

There are two aspects to consider:

[x] Increase root depth under water stress. The general parameter defining the root depth increase should be in the ecotype or cultivar considering the difference among cultivars (see El-Sharkawy & Cock, 1987). Duque and Setter (2013) show the opposite situation with reduction of root depth under water stress; however this study was in pots. Connor et al., 1981 does not mention a difference on root depth but instead an increase on root length density. So for now, keep no effect on root depth.
[x] Increase root length density under water stress. This is based on Connor et al., (1981). This could be also an ecotype parameter based on the difference among cultivars (see Connor et al. 1981, El-Sharkawy & Cock, 1987, Opara-Nadi & Lal, 1987). However, the root water uptake potential per unit of root length can be a species parameter.

lpmorenoc commented 3 years ago

RLWR was defined as 50 m/g or 0.5 m/10mg, this is half the value used previously so it is necessary to review the effect on other experiments.

lpmorenoc / dssat-csm-os