Soil sample help

[Smallaxe]

Originally Posted by nmez21

Just a heads up that oftentimes P levels decrease significantly as you go deeper into the soil. See the attached graphic taken from a Wisconsin putting green. Courtesy Dr. Soldat UW-M. Most important thing is consistency of depth from sample to sample though and year to year to ensure results that are worth interpreting.

Was the lawn tested because it had a visual problem?

To me that may indicate that the applications put on top of the surface are still sitting there as P doesn't really move through the soil profile...

Is this interpretation of the raw data trying to say that P is typically more prevalent at the surface and declines a bit every inch down???

[nmez21]

Originally Posted by Smallaxe

To me that may indicate that the applications put on top of the surface are still sitting there as P doesn't really move through the soil profile...

Is this interpretation of the raw data trying to say that P is typically more prevalent at the surface and declines a bit every inch down???

You're dead on

[timturf]

Originally Posted by nmez21

Just a heads up that oftentimes P levels decrease significantly as you go deeper into the soil. See the attached graphic taken from a Wisconsin putting green. Courtesy Dr. Soldat UW-M. Most important thing is consistency of depth from sample to sample though and year to year to ensure results that are worth interpreting.

Was the lawn tested because it had a visual problem?

What depth was sample taken?

Does the lab know what depth the sample was taken?

Needs ca, p2o5, sop

Quanities ? need more info