Cultural practices improve color, size of ‘Crimson Seedless’

‘Crimson Seedless’ is a lateseason table grape recently developed by scientists at the USDA-Agriculture Research Service. The cultivar holds significant promise for commercial producers due to its late maturity and seedless, crisp berries. Poor color and small berry size are the primary fruit quality problems associated with the cultivar. This study shows that trunk girdles applied at fruit set, combined with applications of the plant growth regulator ethephon, significantly improve the berry size, color and packable yield of this cultivar.