Home Page PRODUCTS PLANT PROTECTION PLANT GROWTH REGULATORS ProTone 20 SG ProTone 20 SG Formulation: Water Soluble Granule (SG) Active Ingredient: %20 S-Abscisic acid Crop Usage Rate Vineyard For quality fruit and homogeneous coloring in red grape varieties. First Application: When veraison begins Second Application: 1 week after the first application 120 ml / 100 lt water