RT Journal Article SR Electronic T1 Correlation of pH and Balling as an Aid to the Winery and The grower JF American Journal of Enology and Viticulture JO Am J Enol Vitic. FD American Society for Enology and Viticulture SP 31 OP 34 DO 10.5344/ajev.1957.8.1.31 VO 8 IS 1 A1 Dale R. Anderson YR 1957 UL http://www.ajevonline.org/content/8/1/31.abstract AB Amassing of data over a period of years allows the determination of the pH range at the optimum maturity for any variety of grape in a given area. By harvesting grapes in this pH range in a normal season, optimum maturity will usually be assured. Advantages of picking grapes at their optimum maturity are: maximum tonnage for the grower, maximum juice gallonage and wine quality for the winery.