Over the last few years, we have been experimenting with the
idea of applying ethylene-releasing plant growth regulators
(PGRs) to the rootzone as a substrate drench. This is a rather
radical idea for floriculture production overall and flowerbulb
forcing in particular. In this newsletter, we’ll review ethylene as
a growth regulator, discuss the commercialy available ethylenereleasing
PGRs and show a number of examples of such
drenches on daffodil and hyacinth.