Question
I received my soil test result back from our county extention office

The soil test was done for a lawn area
based mehlich3 extraction following was listed

phophores 130 (target 72-138)
potassium 368 (target 146-277)
magnesium 451 (target 144-295)
calcium 2328 (target 1401-1790)

pH 5.95 - instruction: add 30 lbs limestone per 1000 sq feet in spring or fall

(Lime requirement Index Adams-Evans 7.50)

Soil type: sandy loam

Here is my question:
I understand that too much calcium in the soil is not good for the plants as it can interfer with the uptake of other nutrients (e.g. magnesium for example). How do I add lime to the soil to raise the pH value without raising the calcium level also ?

Is there anything I can do to bring down the calcium and magnesium levels ?

(I am not so concerned about the potassium level as I know I had just added sulfate of potash a month before taking the sample and it is usually deficit on our sandy loam soil)

Are you aware of any places online where I may find Adams-Evans LRI tables, or can you explain to me what the 7.50 indicates (low buffer, high buffer, etc ?)

Thanks
KD

Answer
KD,
   Thanks for the excellent question.  I assume based on the test levels you are in the MidWest (I'm in alkaline deserts of Arizona).  OK, first just a few basic groud rules.  Ca, Mg, K & Na work as a team and not strictly as individuals.  The ratio one to another is more important than excat quantity.  You can't remove one that is too high but only increase one that is lower in relation to the others.  You generally can't get too much calcium in a soil to cause a problem except to unbalance the others.  Some of our soils are 9000.  The target levels are very misleading and are only for the very poorest of soils.  DO NOT hesitate to add the recommended lime. Coreecting the pH is essential.  High levels of Magnesium can cause a soil to be compact and hard too work.  So in your case adding lime will help balacne the Mg.  Plan on adding potassium every year.  It is usually overlooked and always being used.
  I am not familiar with Adams-Evans tables.  sorry.
Happy Gardening,
Bryan