One reading is an anecdote. The value is in what changes, where, and how consistently.
A single soil reading answers almost nothing. It is a snapshot of one small volume of soil on one day under one set of conditions.
What a record gives you is direction of travel. Is conductivity at this point drifting up over three seasons? Is the wet corner staying wetter for longer since you changed the rotation? Is the pH difference between the top and the bottom of the paddock widening?
Those are questions worth taking to an agronomist, because you arrive with evidence rather than a hunch. And they are questions you can only ask if you sampled the same points, the same way, for long enough.
The unglamorous truth is that the second season of data is worth more than the first, and the third is worth more than both.
What a record gives you is direction of travel. Is conductivity at this point drifting up over three seasons? Is the wet corner staying wetter for longer since you changed the rotation? Is the pH difference between the top and the bottom of the paddock widening?
Those are questions worth taking to an agronomist, because you arrive with evidence rather than a hunch. And they are questions you can only ask if you sampled the same points, the same way, for long enough.
The unglamorous truth is that the second season of data is worth more than the first, and the third is worth more than both.
A screening reading is a starting point
TerraTactics readings help you target follow-up sampling. Confirm anything material with
accredited laboratory testing and a qualified local agronomist.
Published 07 July 2026 by David Gilbert
