Group Title: Research report - Agricultural Research and Education Center - RH-1983-12
Title: Iron and manganese effects on yield and vase life of leatherleaf fern
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Permanent Link: http://ufdc.ufl.edu/UF00066517/00001
 Material Information
Title: Iron and manganese effects on yield and vase life of leatherleaf fern
Series Title: Research report
Physical Description: 2 p. : ; 28 cm.
Language: English
Creator: Poole, R. T ( Richard Turk )
Stamps, R. H ( Robert Huguenor ), 1948-
Conover, Charles Albert, 1934-
Agricultural Research Center (Apopka, Fla.)
Publisher: University of Florida, Agricultural Research Center-Apopka
Place of Publication: Apopka FL
Publication Date: 1983
 Subjects
Subject: Leatherleaf fern -- Growth -- Florida   ( lcsh )
Leatherleaf fern -- Effect of manganese on -- Florida   ( lcsh )
Leatherleaf fern -- Effect of iron on -- Florida   ( lcsh )
Genre: government publication (state, provincial, terriorial, dependent)   ( marcgt )
bibliography   ( marcgt )
non-fiction   ( marcgt )
 Notes
Bibliography: Includes bibliographical references (p. 1).
Statement of Responsibility: R.T. Poole, R.H. Stamps, and C.A. Conover.
General Note: Caption title.
Funding: Florida Historical Agriculture and Rural Life
 Record Information
Bibliographic ID: UF00066517
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 - 71261763

Full Text

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3'1 IRON AND MANGANESE EFFECTS ON YIELD AND VASE LIFE OF LEATHERLEAF FERN

R. T. Poole, R. H. Stamps and C. A. Conover1
University of Florida
Agricultural Research Center-Apopka
Research Report RH-1983-12

Leatherleaf fern (Rumohra adiantiformis [G. Forst] Ching) can be grown
throughout the tropics and in some subtropical areas where long periods of
freezing temperatures are not common. Henley et al. (2) suggest an annual
rate of about 2.5 Ib/A each of Fe and Mn. Poole and Conover (4) reported
75 and 50 Ib/A of Fe and Mn reduced yield of newly planted fern. Fern wilt
is a recent problem of unknown cause affecting fern vase life (1,3). This
study was initiated to determine effects of factorial combinations of Fe
and Mn on yield and vase life of leatherleaf fern.

Six year old fern plots, 32 ft2, were sprayed with 0, 7 or 14 g of Fe
330 sequestrene or 0, 2 or 4 g of MnSO4. Factorial treatments were applied
monthly with the resulting applications totaling 0, 25 and 50 Ib/A/yr each of
Fe and Mn. The first treatment was applied August 29, 1979. Fern were cut
8 times, beginning September 11, 1979, and ending September 23, 1981. Twenty
fronds cut from each treatment July 29 and September 5, 1980, were placed in
graduated cylinders and degree of vase life determined. Iron or Mn was
slightly beneficial (Table 1). Plots receiving no Fe or Mn produced about
400,000 fronds / 30,000 ft /yE, while plots receiving Fe or Mn produced
about 450,000 fronds/30,000 ft /yr. Fe and Mn had no effect on vase life.
Applications of Fe and Mn had little influence on elemental tissue content.
Plants receiving Fe showed no definite trend in Fe increase, but plants
receiving Mn did contain more Mn than plants not receiving Mn.

Results from this study indicate that leatherleaf fern may benefit
from additional Fe or Mn but continued use at levels used in this experi-
ment might result in soil accumulation of toxic levels of Fe or Mn.

Literature Cited

1. Conover, C. A., R. T. Poole and L. L. Loadholtz. 1979. Update on
leatherleaf fern wilt. ARC-A Research Report RH-79-1.

2. Henley, R. W., B. Tjia and L. L. Loadholtz. 1980. Commercial Fern
Production in Florida. Bull. 191. Fla. Coop. Ext. Serv. Univ. of Fla.
45 pp.

3. Mathur, D. D., R. H. Stamps and C. A. Conover. 1982. Postharvest Wilt
and Yellowing of Leatherleaf Fern. Proc. Fla. State Hort. Soc. 95:142-143.

4. Poole, R. T. and C. A. Conover. 1973. Influence of dolomite and micro-
nutrients on yield of leatherleaf fern. Proc. Fla. State Hort. Soc.
86:372-374.


professor, Plant Physiology; Senior Biologist; and Professor and Center
Director, ARC-Apopka, respectively.







Table 1. Yield, vase life and elemental tissue content of leatherleaf fern
receiving iron (Fe) and manganese (Mn) applications from
August 29, 1979 July 22, 1981.

lb/A/yr Total no. Vase life Vase life % dry wt
Fe Mn fronds* 7-29-81 9-5-80 N P K Ca Mg Cu Fe
0 0 3215 11.4 5.6 1.8 .23 1.3 .30 .46 8 11
50 0 3615 10.2 5.8 1.8 .24 1.5 .24 .43 6 108
0 50 3821 9.9 7.1 1.8 .28 1.3 .32 .48 6 126
50 50 3786 10.2 5.7 1.9 .25 1.3 .29 .46 8 116

*Fern harvested from November 20, 1979 to September 23, 1981.




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