Group Title: AREC-A research report - Agricultural Research and Education Center - RH-1984-24
Title: Relationship of height to elemental content of Peperomia
Full Citation
Permanent Link: http://ufdc.ufl.edu/UF00066551/00001
 Material Information
Title: Relationship of height to elemental content of Peperomia
Series Title: AREC-A research report
Physical Description: 3 p. : ; 28 cm.
Language: English
Creator: Poole, R. T ( Richard Turk )
Chase, A. R ( Ann Renee )
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: 1984
Subject: Peperomia -- Growth -- Florida   ( lcsh )
Peperomia -- Fertilizers -- Florida   ( lcsh )
Genre: government publication (state, provincial, terriorial, dependent)   ( marcgt )
bibliography   ( marcgt )
non-fiction   ( marcgt )
Bibliography: Includes bibliographical references (p. 2).
Statement of Responsibility: R.T. Poole and A.R. Chase.
General Note: Caption title.
Funding: AREC-Apopka research report ;
 Record Information
Bibliographic ID: UF00066551
Volume ID: VID00001
Source Institution: Marston Science Library, George A. Smathers Libraries, University of Florida
Holding Location: Florida Agricultural Experiment Station, Florida Cooperative Extension Service, Florida Department of Agriculture and Consumer Services, and the Engineering and Industrial Experiment Station; Institute for Food and Agricultural Services (IFAS), University of Florida
Rights Management: All rights reserved, Board of Trustees of the University of Florida
Resource Identifier: oclc - 71315718

Table of Contents
        Page 1
        Page 2
        Page 3
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

Relationship of Height to Elemental Content of Peperomia

R. T. Poole and A. R. Chasel
University of Florida, IFAS
Agricultural Research and Education Center Apopka
AREC-A Research Report RH-1984-24

Plant tissue analysis has been used as a guide to determine fertiliza-
tion programs for many crops. A table wi~hr s-irQd q prli r'n-of good
quality foliage plants was published in 1 176:'( 1 7ut "P peBn As not
included in the list of 27 plants. This experiment was conducted to
establish guidelines for tissue content o Peperomia Q dqtp determine the
adequacy of general guidelines suggested ya commercial l-aorato y.

Rooted cuttings of green Peperomia o td 1dpwrepo.jf ijt 4" pots
February 1, 1982, containing Canadian peat:pine bark:cypres-s"shavings (2:1:1
by volume) with 7 pounds/yard dolomite and 1 pound/yard Perk incorporated.
Various levels of Osmocote 19-6-12 were surface applied (Table 1). The
suggested rate was 0.7 grams/4" pot (1). Plants were placed in a glasshouse
receiving 1,200 ft-c maximum and watered once or twice weekly and grown
within a temperature range of 70-950F. April 21, 1982 plant height was
determined and recently matured leaves were taken for tissue samples and
sent to a commercial laboratory for analysis.

Plant height increased with an increase in fertilizer level to a
maximum at 2.5 grams/pot. Tissue content of elements changed as fertilizer
increased except boron (B). Calcium (Ca), magnesium (Mg), aluminum (Al),
molybdenum (Mo), sodium (Na), and zinc (Zn) decreased with a fertilizer
increase while nitrogen (N), phosphorus (P), potassium (K), copper (Cu),
iron (Fe) and manganese (Mn) increased with increased fertilizer. Tissue
content of N, P and K would be expected to increase with an increase in N, P
and K applied. The decrease in most of the other elements can be attributed
to a dilution factor. Mn has been shown to be a good indicator of increased
fertilizer application (4).

Elements in tissue of the larger plants within the suggested optimum
range by the commercial laboratory were P, K, Cu, Fe, Mo, Mn, and Zn. Ca, N
and B content of the larger plants in this test were considerably higher
than the suggested optimum range, while Mg was only slightly above that
range. No element was lower than the optimum suggested range. There are no
standards for Al and Na for foliage plants.

If commercially produced plants receiving 1.0 gram/pot of Osmocote
19-6-12 had been submitted for tissue analysis, guidelines from the
commercial laboratory would indicate that N, P, K, Cu, Fe, Mn, and Zn were
in the optimum range and Ca, Mg, B and Mo were too high. However, best

Professor, Plant Physiology and Associate Professor of Plant Pathology,
respectively, Agricultural Research and Education Center, 2807 Binion
Road, Apopka, FL 32703.

growth would not be achieved by reducing Ca, Mg, B or Mo, but by increasing
N. An increase of K might also be beneficial.

Results from this experiment indicate the previous suggested level of
0.7 grams Osmocote 19-6-12/pot (1) was too low. The current suggested rate
(2) is 2.0 grams/pot. Earlier research (5), which tested only 2 levels of
N, indicated good quality peperomia had tissue content of N, 3.3%; P, 0.2%;
K, 1.8%; Mg, 0.5% and Ca, 0.6%, but research reported here using 7
fertilizer levels indicates Peperomia should contain at least 4% by dry
weight of N.


1. Conover, C. A. and R. T. Poole. 1976. Light and fertilizer recommenda-
tions on production of foliage stock plants and acclimatized potted
plants. Agricultural Research Center Apopka, ARC-A Research Report

2. Conover, C. A. and R. T. Poole. 1984. Light and fertilizer recommen-
dations for production of acclimatized potted foliage plants.
Agricultural Research and Education Center Apopka. AREC-A Research
Report RH-84-7.

3. Poole, R. T. and C. A. Conover. 1976. Chemical composition of good
quality tropical foliage plants. Proc. Fla. State Hort. Soc.

4. Poole, R. T. and C. A. Conover. 1977. Influence of fertilizer source
and level on growth and foliar content of Philodendron oxycardium and
Chrysalidocarpus lutescens. Proc. Fla. State Hort Soc. 90:314-316.

5. Poole, R. T. and C. A. Conover. 1981. Influence of N-P-K factorial
fertilization on growth characteristics and foliar content of 4 foliage
plants. HortScience 16(6):771-772.

Table 1. Influence of fertilizer
composition of Green Peperomia

(19-6-12) levels on growth and tissue

Osmocotea 4/21/82 Percent dry weight Parts per million
N P K Ca Mg Al B Cu Fe Mo Mn Na Zn
0.5 17 1.9 0.30 1.5 4.5 1.6 9 138 9 42 5.0 35 124 65
1.0 17 2.7 0.45 2.1 4.2 1.5 9 185 11 54 5.3 52 160 78
1.5 18 4.1 0.51 2.2 3.9 1.4 9 199 13 65 5.0 61 143 71
2.0 20 4.5 0.51 2.2 3.5 1.2 8 203 12 71 3.9 64 96 59
2.5 24 4.2 0.55 2.9 3.5 1.2 8 138 12 77 3.3 76 81 56
3.0 23 4.9 0.59 3.1 3.5 1.1 7 170 13 82 3.2 88 75 59
3.5 22 4.3 0.66 3.4 3.2 1.0 7 184 13 81 2.8 96 76 54

Statistical Significanceb

Linear .01 .01 .01 .01 .05 .05 .01 NS .05 .01 .01 .01 .01 .01

Optimumc 2.0 0.15 1.0 0.5 0.3 ?d 30 10 50 0.2 50 ? 25
Range 3.5 0.70 4.5 2.0 1.0 ? 100 40 300 5.0 300 ? 100

aGrams of 19-6-12 per 4" pot applied on 2/1/82.

bSignificance denoted as follows: NS = not significant, 0.05 = significant
at the 5% level, and 0.01 = significant at the 1% level.
obtained from a commercial laboratory.

dNo range is given for either Al or Na.

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