Old 07-28-2014, 05:45 PM
Dwburroug Dwburroug is offline
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Join Date: Jul 2014
Location: Central indiana
Posts: 1
Help me interpret soil test.

New home.

Central Indiana. Half acre lot and seems to be a silt loam/clay mixture that is very fine with very little sand/gravel. Existing lawn is a well maintained typical mix of kbg, prg, and fescue. Looking to establish the nicest lawn in the neighborhood. Complete renovation is not an option as children and dogs make full time use of lawn so transformation will have to be gradual. Plan to core aerate heavily and overseed here in the coming weeks. Took soil sample last week and results are as follows.

4% organic matter
51 ppm phosphorus
199 ppm potassium
370 ppm magnesium
2600 ppm calcium
30 ppm sodium
Cation exchange capacity 16.7
7.4 ph
.8 mmho/cm soluble salts
36 ppm sulfer
15 ppm zinc
10 ppm iron
52 ppm manganese
2.4 ppm copper
2.0 ppm boron

They are listing phosphorus, sulfer, zinc, and manganese as "very high".

They are listing sodium as "very low" and soluble salts as "low"

Organic matter is listed as "medium" and everything else is listed as "high".

My initial reaction was at the ph at 7.5 when I'd like to be 6.5-7. I would throw some elemental sulfer down but my sulfer level is already "very high" ....thoughts? I worry that even with proper nutrients there in the soil they won't get taken advantage of due to slightly high ph. Also hard to get deep green at higher ph levels.

I plan on eliminating or drastically reducing my P levels in my typical fertilizer routine as it appears there is plenty there. "Starter" type fertilizer likely not necessary?

Open to suggestions/ideas to help maximize results
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Old 07-28-2014, 06:00 PM
easy-lift guy's Avatar
easy-lift guy easy-lift guy is online now
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Join Date: Aug 2011
Location: Venice, FL. USA
Posts: 3,341
Contact your John Deere dealer and show them the report and have a Rx prepared to bring your soil up to par.
Thanks for doing your homework since nearly no one appreciates and understands the importance of proper PH for soil on this site.
easy-lift guy
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Old 07-28-2014, 09:04 PM
RigglePLC's Avatar
RigglePLC RigglePLC is online now
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Join Date: Jul 2006
Location: Grand Rapids MI
Posts: 10,965
I think pH 7.4 will be fine. Indiana soils are excellent.
Automatic irrigation is really the first step.
Then you will probably want to improve the grass varieties. Overseeding will probably not change much. Its very difficult to get new grass started on top of old grass.
For best results let the sod farm produce 100 percent improved varieties of Kentucky bluegrass. Then let them resod your site.
Then get an owner-operated top-quality lawn care company to maintain it.
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