pH in blueberries
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
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!