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ecmn | This topic has been highly productive. it let us see the common element behind most of the disagreement. Thanks for all the input so far.
We agree the available pool is easy to mine, we’ve all watched that number move on our own soil tests.
We agree that if the available pool gets mined hard enough, crop performance will show it.
Where we don’t agree is how much is in the geological pool, and that’s where the divide really sits.
So to move the topic along, here are the next two questions:
1. If the earth has a limited nutrient supply, what is the measured rate of depletion and how are we measuring that?
2. If biology accessing parent material doesn’t count, then what mechanism replenished the available pool before commercial fertilizer? | |
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Can we agree on a definition of mining the soil?
