RT Journal Article SR Electronic T1 The Relation of Bloom-Applied Gibberellic Acid to the Yield and Quality of Thompson Seedless Raisins JF American Journal of Enology and Viticulture JO Am J Enol Vitic. FD American Society for Enology and Viticulture SP 224 OP 226 DO 10.5344/ajev.1979.30.3.224 VO 30 IS 3 A1 A. N. Kasimatis A1 F. H. Swanson A1 E. P. Vilas, Jr. A1 W. L. Peacock A1 G. M. Leavitt YR 1979 UL http://www.ajevonline.org/content/30/3/224.abstract AB Gibberellic acid at 5 or 10 ppm was applied during bloom in four trials in commercial Thompson Seedless raisin vineyards in the San Joaquin Valley. These concentrations did not affect fruit maturity, raisin yields, or raisin grades; nor was the incidence of bunch rot influenced. Significantly increased, however, were fresh berry weights, which, in turn, were reflected in significantly heavier raisin berries. Although not measured directly no berry-thinning effect was noted.