pH in blueberries

Asked February 16, 2019, 2:35 AM EST

Just had some soil samples analyzed and the "soil pH" is about 3.9 and the "Buffer pH" is 5.5. The "% H" is 74.3 and the "Est CEC is 22.0" Which pH reading should I use to make decision on applications? If my target pH for blueberries is 4.5 to 5.5 should I add lime to increase the "soil pH" or should I do nothing according to Buffer pH.

Klickitat County Washington blueberries

1 Response

Thank you for your question. WSU has the following article with information that should explain (page 5): http://whatcom.wsu.edu/AG/documents/soil_compost/SoilTestInterpretationGuide.pdf

Your soil appears to be exactly what the article is describing in the second paragraph of the "SMP* lime requirement test" section. You need add no lime.

I hope this is helpful. Good luck!