| Material Information
||Reaction of three bromeliads to high humidity during storage
||CFREC-Apopka research report
||3 p. : ; 28 cm.
||Poole, R. T ( Richard Turk )
Conover, Charles Albert, 1934-
Central Florida Research and Education Center--Apopka
||University of Florida, Central Florida Research and Education Center-Apopka
||Place of Publication:
||Bromeliaceae ( fast )
Plants -- Effect of humidity on ( fast )
Foliage plants ( fast )
Bromeliaceae -- Florida ( lcsh )
Plants -- Effect of humidity on ( lcsh )
Foliage plants -- Florida ( lcsh )
Florida ( fast )
||government publication (state, provincial, terriorial, dependent) ( marcgt )
non-fiction ( marcgt )
||Statement of Responsibility:
||R.T. Poole and C.A. Conover.
| Record Information
||University of Florida
||University of Florida
||All rights reserved by the source institution and holding location.
||oclc - 69174557
q 2 Reaction of Three Bromeliads to High Humidity During Storage
_rston R.T. Poole and C.A. Conover'
S Q 0 '99 University of Florida
Central Florida Research and Education Center-Apopka
o\ \\i\ 0 CFREC-Apopka Research Report RH-92-26
Bromeliads are relatively easy to grow specimen plants that provide a long period of
effective display when placed in interior environments. Central Florida producers think
bromeliads could command a bigger share of the foliage plant market if certain shipping
problems were eliminated. During shipping, healthy leaf tissue sometimes develops necrosis on
some or all plants within a shipment. Necrosis most often occurs at structurally weak points
such as the arched area of the leaf.
Several experiments have been conducted over the past few years in an effort discover
the production or shipping conditions which lead to this damage. In most experiments damage
was not produced under test conditions. In the following two experiments, damage was
produced on one of three bromeliads tested from the genus Aechmea.
Experiment 1 was a 2 x 2 factorial test with 2 replications per treatment initiated on 12
July 1992. Two local growers supplied a number of excellent quality ready-for-sale Aechmea
'Friederike' and Aechmeafasciata 'Morgana' to CFREC-Apopka. Excellent quality ready-for-
sale Aechmea fasciata was obtained from two other local sources. Plants were placed in a
greenhouse where maximum light intensity at plant level was 2000 ft-c and air temperatures
ranged from 70 to 900F.
On 16 July 1992, plants were sleeved, boxed and moved to dark air-tight coolers where
air temperature was 650F and relative humidity (RH) was either 90% 10% or 50% + 10%.
Plants were watered either three hours or three days before storage. Center vases and foliage
of bromeliads watered three days before storage treatments began had dried when plants were
placed in coolers. Vases of bromeliads watered three hours before storage were emptied when
plants were sleeved and boxed although foliage was still wet. Leaves were checked for signs
of developing necrosis after two hours, one day and three days in storage coolers.
Experiment 2, a 2 x 2 factorial test with 3 replications per treatment, was initiated on 30
July 1992. Locally grown ready-for sale Aechmea 'Friederike' and Aechmeafasciata 'Morgana'
were given the same greenhouse, irrigation and cooler treatments as plants used in experiment
'Professor of Plant Physiology and Center Director and Professor of Environmental
Horticulture, respectively, Central Florida Research and Education Center-Apopka, 2807 Binion
Road, Apopka, FL 32703.
1. Plants were sleeved, boxed and placed i
greenhouse on 6 August 1992. As in exper
hours, one day and three days after storage
Results of the two experiments were
fasciata were not affected by test treatments
RH (90% 10%) during 65F dark stora
1). In experiment 1, few necrotic leaves
'Friederike' plants with more necrotic lea
humidity or watered three hours before sto
In experiment 2, necrotic areas wer
in coolers. When number of necrotic leave
numbers had increased only slightly from i
Growers report that locally shipped
develop the same type of necrosis as prod
plants or high air temperature and inadequE
create a very humid environment. Results (
shipping could be beneficial for Aechmea '
Table 1. Irrigation treatment and 1
leaves on Aechmea 'Fried
dark coolers for three dai
%RH Irrigation Gr
50 3 days
50 3 hours
95 3 days
1-..--:r1:h. /TT\ ..