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| That been proven to be wrong about soil temp at least in the 0-4 inch zone is all stays consistent with the air temperature for the most part, and swings up and down with it.
From the article link below---
"So just how fast can soil temperatures change?
Scheeringa: The rate at which soil temperature changes depends mostly on soil depth. At less than 4 inches deep, soil temperatures can vary just as fast as the air temperature, because there isn’t much of a soil layer between that soil depth and the surface of the soil.
The swing in daily warming and cooling cycles of soils gets smaller the farther down you go in the soil profile. By the time you reach 40 inches, you really can’t see any daily cycle at all. At that soil depth, temperatures can swing about 25 degrees seasonally from winter to summer in Indiana, but hardly at all during any given day."
https://www.farmprogress.com/corn/all-you-ever-wanted-know-about-soi...
Edited by OSUBucks 3/21/2019 09:12
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corn depth cup test
