Application of Gibberellic Acid to Strawberry Plants at Different Stages of Development

Abstract

GIBBERELLINS are known to play an essential part in the metabolism of the strawberry plant from which they have been isolated chromatographically¹. By spraying plants with gibberellic acid in the winter Singh et al.² advanced harvesting times by three weeks and increased yields. In the United States, Smith et al.³ gave autumn applications which advanced fruit ripening by several days without affecting yields. Guttridge⁴, however, reported that when gibberellic acid was administered in the autumn, fruit yields were reduced in Scotland.