Question: What’s the difference between soil pH and buffer pH? My soil has a pH of 5.1 and a buffer pH of 6.7. Answer: Soil pH is the measure of active acidity. Active acidity is soil solution ...

(1) Germination and early seedling growth of Pinus contorta and Picea glauca were examined, using distilled water (pH 6·3), eight acidic buffer solutions (pH 2·2), and eight alkaline buffer solutions ...