Abstract
With the purpose to save the calyx removing labor of strawberry cv. America for processing, the present study was carried out to search the growing conditions which facilitate detachment of straw-berry fruits from the cayxes, leaving the latters on the peduncles, by a single hand pulling.
The percentage of calyx-free fruits was generally high in early season of harvest, but remarkably decreased in late season.
The percentage of calyx-free fruits was increased both by spraying some kinds of fungicides in early season of harvest and by combined application of gibberellin and potassium phosphate in late season. However even by these treatments, the percentage of calyx-free fruits at the best time of harvest and the total yield of them through the harvest season were not satisfactory in saving the calyx removing labor of growers and canners.
