How long does naturally acidic soil take to drop?
My UMass test came back with a neutral 7.0 pH. Around here, soils naturally tend to the acidic side and lime is typically an annual exercise. I very rarely lime as I've tended to neglect my lawn. I did a bag (40 pounds?) of dolomite on 2,500 SF around May. Last bag was 2-3 years prior. And then I discovered TLF...
I would like a soil at 6.5-6.8 in the spring. Should I apply gypsum or wait for a natural drop?
Modified Morgan extractable:
Potassium is low at 71 ppm
Ca:Mg seems crazy.
Calcium at 1336 ppm
Magnesium at 276 ppm
Shouldn't that be almost the other way around?
My thoughts are to throw some fast-acting gypsum and sulfate of potash at it. Light doses. See what happens.
I don't think the pH is the end of the world but the Ca:Mg looks like it could be a problem.
1. What affect will potassium have on this whole balance?
2. Will pH correct itself in a year or two or should I address it now for best results?
3. Do you think one bag of dolomite earlier in the year had that much of an effect?