Reducing Soil pH in a Blueberry Field by jpopenoe Posted: December 13, 2017 Leave a Comment Blueberries prefer a low soil pH between 4.5 and 5.5. Growers add pine bark fines to the soil to reduce soil pH and increase organic matter, but how else can you reduce soil pH? You… Read More Category: Agriculture, Horticulture Tags: acidification, blueberry, Popenoe, soil pH, sulfur ammendments