Details for Achieving Optimal Soil Health: Lowering pH in Sulfur-Heavy Soil

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Achieving Optimal Soil Health: Lowering pH in Sulfur-Heavy Soil

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Wagner, SD|Jan 24, 2024

My soil test shows high pH and also high sulfur levels. I know elemental sulfur will lower pH but with sulfur already in abundance what is the best way to go about lowering the pH in my soil?
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Answers (6):

Marcia Cripps on AGvisorPRO

Marcia Cripps

Feb 08, 2024

I hate being that person BUT 1) how did this field get tested (depth and what parts of field) 2) could the lab have made a mistake (it has happened to me in the past I always question the lab when I see stuff like this) 3) I would retest and make sure it’s done correctly and I would do it personally vs an intern/assistant 4) go w a smaller particle sulfur blend w like gypsum
Adam Spelhaug on AGvisorPRO

Adam Spelhaug

Jan 26, 2024

If there was an economic way to lower pH it would have been done awhile ago here in the RRV with plenty of 8 pH here. I don’t know if you could add enough S to drop it

Jan 26, 2024

An option to lower the pH is Humics, they are an amphoteric molecule thus making it possible to either release or gain the Hydrogen ion to balance pH.
Robert Saik on AGvisorPRO

Robert Saik

Founder / CEO

Jan 24, 2024

A couple things: - sulfur soil levels will not be evenly distributed across your fields; so even with a high test not all the field will be the same. - I have been working with elemental sulfur for over 30 years and do not know of a situation where added sulfur caused an imbalance. - imo you are ok to go with ES to address high pH soils. Note: there is an abundance of calcium carbonate you should also see better soil floculation resulting in better water infiltration. I would not hesitate application. As to how much...more info needed.

Jan 24, 2024

What type of soil testing are you using ? Grid, zone, whole field ?

Jan 24, 2024

Drainage tile is a must to flush the excesses out of the soil.