It seems that field capacity is a function of root depth and soil type. But it also seems that during excessive rain events, the filed capacity is 'clipped' to a certain value and ofter times, after big rains, the ground seems to still be wet below the surface yet the RainMachine decides that the field capacity has been exhausted and thus needs replenishment.
But I believe that water below root level will still percolate upwards though a phenomenon called non-fibrose capillary action where water slowly migrates upwards (against gravity force!) though capillary effect, to be more precise through non-fibrose (non-root) capillary effect. This is a slow process, but nevertheless it is an important process, In some cases this is how the parts from water table makes it's way to plants. But this is not about water table....
I want to know if there is a way to account for *SOME* of the capillary 'replenishment' effect from rain water, to be more precise from long rain episodes where the RainMachine decides to water after 2-3 days when in fact maybe 3-4 days will be more appropriate.
Can your formula take this in consideration? Even an empirical capillary effect is better than no capillary effect.
Thank you for your consideration.
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