HYDROBIO

Where is the land?

A place and a soil. If you have a laboratory analysis, it replaces every estimate below it.

I have a soil analysis
dS/m
%
cmol/kg
mg/kg
%

Leave anything you have not measured empty. An absent value stays absent — it is never guessed into a number that flatters the result.

How well fed is this soil?
mm
The amendment only holds water where it physically is. Working it deeper puts it in more of the root zone — but no deeper than the crop actually roots.