DELAYING FLOWERING AND IMPROVING THE YIELDS OF VICTORIA PLUM WITH PLANT GROWTH REGULATOR SPRAYS

High-volume sprays of ethephon to Victoria plums, just prior to leaf-fall in the autumn, delayed blossoming by several days in the following spring.
Blossom quality and fruit set were frequently poorer on the ethephon-sprayed trees than on the controls, but the addition of GA₃ to the ethephon sprays overcame the effects on flower quality and increased yields.

Flowering and Fruit Set in Fruit Trees

A.D. Webster

https://doi.org/10.17660/ActaHortic.1984.149.23