Soil Test Result - Knowledgebase Question

Issaquah, WA (Zone 7B)
Question by rkshehata
July 20, 2007
If I test the soil for its pH (using litmus paper) and it's acidic, how do I know how much lime to add to the soil to make it neutral?


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Answer from NGA
July 20, 2007

0

The answer really depends on a specific pH reading. Neutral is 7. There in the Pacific Northwest your soil will test acidic (probably 5.8 - 6.5). Lime will sweeten the soil, but it takes a few months, and it only changes it a little so you'll need to reapply lime every couple of years. Sorry I can't be more specific.

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