October 2024 - 8

PGRs
Above: A manual boom is equipped with casters to apply PGR
drenches. Left: Penny Merritt-Price, product development
manager at Young's Plant Farm, makes selection recommendations
based on the company's greenhouse trials and trial garden.
Photos courtesy of Young's Plant Farm.
" The name of the game is how many dollars can be
put on a shipping cart and how many dollars can be
put on a semitruck. Even though we grow a lot of large
combinations, there is still a lot of genetics produced in
small pots that are not conducive to being grown in small
packs and pots. The only way we are able to produce
some of these crops as quality plants, and to have good
postharvest longevity for our customers, is with PGRs. "
Costamagna shared that Young's Plant Farm produces
over 200 species of plants - the total number of cultivars
being several thousand. He said the list of plants is everchanging,
whether that is the result of better genetics,
branded programs or other reasons.
" We drench the PGRs because we grow so many species
and cultivars in the greenhouses, " he said. " Crops are
laid out in compartments based on their average daily
temperature and light requirements. We don't spray
8 OCTOBER 2024 GPNMAG.COM
because inevitably overspraying can occur or something
that shouldn't be sprayed is treated. We treat the plants
with a drench because it is consistent. Some of that will
be done with packs grown on tables. Some of that may be
done with a boom system. "
Young's designed and built a manual boom, which
operates similarly to a mechanical or automated boom.
Instead of running on a track that rides on heating pipes
or rails above tables, the manual boom is equipped with
casters which allows it to be moved on the ground.
It previously took eight workers to apply PGRs in one
day, but using the manual boom only requires two workers
to apply the same amount of chemical to the same area.
" The manual boom is equipped with a hose that is
attached to a Dosatron injector. Most crops are finished on
the floor because that provides us with the most spacing
options. The boom is our primary method of delivery
for chemical drench applications whether it is a PGR,
fungicide or insecticide.
" Our goal is to be the most efficient. We want to make
one application. The applications are made based on the

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October 2024

Table of Contents for the Digital Edition of October 2024

Table of Contents
Editor's Report | Growth regulators
PGRs | When it comes to controlling ornamental plant growth, growers have options
Variety Information | Award winners
Plant Health | Winter is coming
Dr. Bugs | Insect growth regulators and insecticide resistance
Trial Garden Report | Penn State Flower Trials
Great Lakes EXPO | Empowering growers
Forty Under 40 Perspectives | Native plant trials at Mt. Cuba Center
Product Marketplace
Classifieds/Ad Index
October 2024 - 1
October 2024 - 2
October 2024 - Table of Contents
October 2024 - Editor's Report | Growth regulators
October 2024 - 5
October 2024 - PGRs | When it comes to controlling ornamental plant growth, growers have options
October 2024 - 7
October 2024 - 8
October 2024 - 9
October 2024 - 10
October 2024 - 11
October 2024 - Variety Information | Award winners
October 2024 - 13
October 2024 - Plant Health | Winter is coming
October 2024 - 15
October 2024 - 16
October 2024 - 17
October 2024 - Dr. Bugs | Insect growth regulators and insecticide resistance
October 2024 - 19
October 2024 - Trial Garden Report | Penn State Flower Trials
October 2024 - 21
October 2024 - Great Lakes EXPO | Empowering growers
October 2024 - 23
October 2024 - Forty Under 40 Perspectives | Native plant trials at Mt. Cuba Center
October 2024 - 25
October 2024 - Product Marketplace
October 2024 - 27
October 2024 - 28
October 2024 - 29
October 2024 - Classifieds/Ad Index
October 2024 - 31
October 2024 - 32
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