I am interested to know if anyone has had experience using EoD far-red
as a tool to reduce branching in seedling trees.
I have several families of seedling apples growing under a controlled
environment regime - high light, long days, high CO2, high temperature,
root restriction, PGR to reduce internode extension. This regime induces
very high levels of vigour, but has the down-side of inducing every
lateral to branch, and branches to form on those branches, if we let
them! A large waste of biomass and labour.
Any suggestions? Initial experience indicates that "titrating" the EoD
FR to avoid terminal bud set makes this strategy difficult, if not
impossible, and a means of inducing a "shade avoidance" response while
providing high irradiance. Removing the blue end of the spectrum is not
really an option, as this reduces leaf chlorophyll, and photosynthesis.
Scientist, HortResearch Palmerston North Research Centre
Private Bag 11-030
Palmerston North, NEW ZEALAND
Tel. 6-356-8080 ext 7774 mob. 0275747077
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