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Group Title: Research Report - University of Florida Central Florida Research and Education Center ; 86-07
Title: Evaluation of insecticidal seed coatings for the control of Fall armyworm on sweet corn and field corn seedlings grown in sandy and organic soil, Expe
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Permanent Link: http://ufdc.ufl.edu/UF00075886/00001
 Material Information
Title: Evaluation of insecticidal seed coatings for the control of Fall armyworm on sweet corn and field corn seedlings grown in sandy and organic soil, Expe
Series Title: Research Report - University of Florida Central Florida Research and Education Center ; 86-07
Physical Description: Book
Language: English
Creator: Leibee, Gary L.
Publisher: University of Florida, Central Florida Research and Education Center
Publication Date: 1985
 Record Information
Bibliographic ID: UF00075886
Volume ID: VID00001
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 122931927

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HISTORIC NOTE


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
(EDIS)

site maintained by the Florida
Cooperative Extension Service.






Copyright 2005, Board of Trustees, University
of Florida








Central Science
Library

OCT 231987

University of Flor da University of Florida

CENTRAL FLORIDA RESEARCH AND EDUCATION CENTER

Sanford, Florida

Research Report SAN 86-07 September 1985

EVALUATION OF INSECTICIDAL SEED COATINGS FOR THE CONTROL OF FALL
ARMYWORM ON SWEET CORN AND FIELD CORN SEEDLINGS GROWN IN
SANDY AND ORGANIC SOIL, EXPERIMENT I, 1984

G. L. Leibee


Treated seed for this experiment was provided by Union Carbide.
The treatments consisted of 'Jubilee Fl' sweet corn treated with UC
80502 at 8 and 16 oz of ai/cwt, Orthene 80 seed protectant (the
standard) at 8 oz/cwt, and an untreated check; and 'AD 3995 R23' field
corn seed treated with UC 80502 at 4 and 8 oz of ai/cwt., Orthene 80
seed protectant (the standard) at 8 oz/cwt, and an untreated check.
Eighty 4-inch plastic pots of unsterilized soil were prepared; 40 pots
of Myakka fine sand from the Central Florida Research and Education
Center, and 40 pots of Lauderhill muck from Zellwood, FL. Each of the 8
treatments was planted in 5 pots of each soil type. Five seeds were
planted per pot 3/4-inch deep on July 6, 1984. On July 11, 1984, all
the pots were placed in a field of over mature sweet corn that was
heavily infested with fall armyworm. Eight pots were placed in each of
ten 30 X 20 X 5 inch wooden crates. A crate contained either all 4
sweet corn seed treatments in sand and muck or all 4 field corn seed
treatments in sand and muck. The sweet corn and field corn were not
mixed in the same crate to prevent the fall armyworms from choosing one
kind of corn over the other. The crates were distributed randomly
throughout the corn field. The potted corn plants were returned to the
greenhouse on July 20. The corn was spiking when placed into the field.
When retrieved from the field, the sweet corn was about 7 inches tall
and had 3-4 leaves and the field corn was about 11.5 inches tall and had
3-5 leaves. The plants were rated for damage on July 22 as follows:
0=no damage; 1=slight feeding on oldest leaves; 2=feeding on
intermediate aged leaves; and 3=feeding evident on all leaves.

There were no significant differences in the damage ratings in the
sweet corn and field corn grown in the muck soil. There was a
significant reduction in damage in the sandy soil with the sweet corn
treated with the Orthene standard and UC 80502 at 16 oz (see table).
All the field corn seed treatments grown in the sand showed a reduction
in damage over the untreated check, but the differences were not
significant. No phytotoxicity was observed.




















Evaluation of seed coatings for the control of fall armyworm on
sweet corn and field corn seedlings grown in sandy soil.

Treatment- oz. of
Crop ai/cwt of seed Damage rating*


Sweet corn


Untreated check

Orthene standard

UC 80502, 8 oz.

UC 80502, 16 oz.

Untreated check

Orthene standard

UC 80502, 4 oz.

UC 80502, 8 oz.


Field corn


2.50

1.76

1.88

1.70

2.44

1.50

2.00

1.94


Means followed by the same letter are not
the 5% level by DMRT.


significantly different at




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