Group Title: AREC-A research report - Agricultural Research and Education Center-Apopka ; RH-85-4
Title: A test of micronutrient sources
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 Material Information
Title: A test of micronutrient sources
Series Title: AREC-A research report
Physical Description: 3 p. : ; 28 cm.
Language: English
Creator: Poole, R. T ( Richard Turk )
Conover, Charles Albert, 1934-
Agricultural Research and Education Center (Apopka, Fla.)
Publisher: University of Florida, IFAS, Agricultural Research and Education Center-Apopka
Place of Publication: Apopka FL
Publication Date: 1985
Subject: Plants -- Nutrition -- Florida   ( lcsh )
Genre: government publication (state, provincial, terriorial, dependent)   ( marcgt )
non-fiction   ( marcgt )
Statement of Responsibility: R.T. Poole and C.A. Conover.
General Note: Caption title.
 Record Information
Bibliographic ID: UF00065960
Volume ID: VID00001
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 70923338

Full Text


The publications in this collection do
not reflect current scientific knowledge
or recommendations. These texts
represent the historic publishing
record of the Institute for Food and
Agricultural Sciences and should be
used only to trace the historic work of
the Institute and its staff. Current IFAS
research may be found on the
Electronic Data Information Source

site maintained by the Florida
Cooperative Extension Service.

Copyright 2005, Board of Trustees, University
of Florida

A Test of icpinuttrien Sprceis

R. T. Pool and CA. Conover
Universi y of fTbidj, S
Agricultural Researcl and Education Center Apopka
AREC-A Res!Pc eeprVRH8 ri- .ra

Micronutrients are needed in small, but essential amounts, for growth
of good quality foliage plants. Research has shown that foliage plants
require very small amounts of micronutrients and can obtain much of these
nutrients from the water and potting medium. Dickey and Joiner grew
Heartleaf Philodendron and Pothos in sand using hydroponic solutions. After
6 months, plants in treatments without iron were still growing vigorously,
although leaves had developed mild interveinal chlorosis. Plants growing 6
months without copper, manganese or zinc also grew vigorously, but showed no
chlorosis. Conover et al. applied Perk, Vigoro Supplement X and FTE-503 at
3 rates to Aphelandra, Schefflera and Heartleaf Philodendron growing in a
potting medium composed of Florida sedge peat:pine bark:cypress shavings.
Micronutrient application did not increase growth or quality over plants
receiving no micronutrients after 3 months. Other foliage plants are more
susceptible to micronutrient deficiencies. Aglaonema 'Fransher' requires
supplemental copper or foliar distortion readily occurs, especially during
winter when the soil is cold. Palms require additional manganese and
sometimes iron and zinc.

* Calathea 'Leopardina', Calathea 'Roseopicta', Aphelandra squarrosa,
Brassaia actinophylla and Chrysalidocarpus lutescens were potted March 20,
1980 in 6" pots containing Florida sedge peat:gine bark:cypress shavings
(2:1:1 by volume) containing 5 Ibs dolomite/yd The 6" pots were top-
dressed with 5 grams Osmocote 14-14-14 at time of planting. Plants were
grown in a glasshouse where they received 1,200 ft-c maximum and temperature
was maintained between 65 and 900F.

Esmigran, Perk and Micromax were incorporated at rates specified in
Table 1. At termination of the experiment, plant height and grade were
determined. Of the plants tested, micronutrients increased plant height of
C. lutescens. Micronutrients did not affect plant grade of the Calatheas.
Chrysalidocarpus and Aphelandra responded positively to additional
micronutrients, while Brassaia grade was lowered. Micromax, at rates
applied, appeared slightly better than Perk which was slightly better than


1. Conover, C. A., D. W. Simpson and J. N. Joiner. 1975. Influence of
micronutrient sources and levels on response and tissue content of
Aphelandra, Brassaia and Philodendron. Proc. Fla. State Hort. Soc.

1Professor, Plant Physiology, Professor and Center Director, respectively.
Agricultural Research and Education Center, 2807 Binion Road,Apopka, FL

2. Dickey, R. D. and J. N. Joiner.
deficiencies in foliage plants.

1966. Identifying elemental
So. Florist and Nurseryman: LXXIX

3. McElwee, E. W. 1955. Manganese deficiency in Queen Palm.
of Florida Extension Bulletin 152.


4. Poole, R. T. and C. A. Conover. 1979. Identification and correction of
copper deficiency of Aglaonema commutatum 'Fransher'. HortScience

5. Poole, R. T. and C. A. Conover.
foliage production. ARC-Apopka

Influence of microelement
potted March 20, 1980.

1983. Micronutrients in tropical
Research Report RH-1983-17.

source and rate on growth of foliage

Aphelandra Leopardina Roseopicta
June 18, 1980 July 15, 1980 July 15, 1980

Ht Plantz Ht Plantz Ht Plantz
Ibs/yd3 (cm) grade (cm) grade (cm) grade

Control 25.7ax 4.0ab 38.8a 3.Oa 30.7a 3.0a

3 26.3a 4.2bc 36.8a 2.8a 33.3a 3.5a
6 28.5a 4.5de 38.7a 2.8a 34.0a 3.8a
1.5 25.3a 4.0ab 40.Oa 3.5a 33.5a 3.8a
3 26.2a 3.8a 43.3a 3.7a 31.2a 2.8a
1.5 28.2a 4.3cd 41.Oa 3.2a 32.2a 3.8a
3 28.5a 4.7e 39.3a 2.8a 35.3a 3.7a

z1 = poor, 3 = good, 5 = excellent quality.

Y Esmigran manufactured by Mallinckrodt, St. Louis, MO., Perk by Estech
General Chem. Corp., Chicago. IL., Micromax by Sierra Chemical Co.,
Milpitas, CA.
x Numbers followed by same letter are not significantly different, Duncan's
multiple range test, 5% level of probability.

Table 1.


Table 1 continued. Influence of microelement source and rate on growth of
foliage plants potted March 20, 1980.

Brassaia Chrysalidocarpus
August 20, 1980 August 20, 1980

Ht Plantz Ht Plantz
Ibs/yd3 (cm) grade (cm) grade

Control 50.7ax 4.7b 53.0a 3.2a
3 52.8a 4.7b 56.5ab 3.3ab
6 49.0a 3.8a 60.7b 3.3ab
1.5 49.7a 4.7b 63.7b 4.0bc
3 47.7a 4.0ab 61.7b 4.3c
1.5 52.7a 4.2ab 57.8ab 4.0bc
3 51.5a 4.8b 63.3b 4.7c

z 1 = poor, 3 = good, 5 = excellent quality.

Esmigran manufactured by Mallinckrodt, St. Louis, MO., Perk by
General Chem. Corp., Chicago. IL., Micromax by Sierra Chemical
Milpitas, CA.


x Numbers followed by same letter are not significantly different, Duncan's
multiple range test, 5% level of probability.


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