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Group Title: Caterpillar control on cabbage.
Title: Caterpillar control on cabbage. Spring 1984
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Permanent Link: http://ufdc.ufl.edu/UF00075821/00003
 Material Information
Title: Caterpillar control on cabbage. Spring 1984
Series Title: Caterpillar control on cabbage.
Translated Title: Research Report - University of Florida Central Florida Research and Education Center ; 85-9 ( English )
Physical Description: Serial
Language: English
Creator: Leibee, Gary L.
Publisher: University of Florida, Central Florida Research & Education Center.
Publication Date: 1984
 Record Information
Bibliographic ID: UF00075821
Volume ID: VID00003
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 144607785

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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




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c HUMTE LIBRARY

University of Florida
CENTRAL FLORIDA RESEARCH AND EDUCATION ENTE~J Lob U U I't
Sanford, Florida
Research Report SAN 85-9 -.F A.4i ofiF .

CATERPILLAR CONTROL ON CABBAGE, SPRING, 1984

G. L. Leibee


'Rio Verde' cabbage was transplanted February 21 in Myakka fine sand
on the University of Florida's Central Florida Research and Education
Center in Sanford. A plot consisted of one 30' row with 12" plant spacing.
Each plot row was separated by two unplanted rows; row spacing was 30".
Nemacur 15G 2 lb ai/acre was applied pretransplant in a 15" band for
nematode control. Randox 4EC and Vegedex 4EC both at 3 lb ai/acre were
applied for weed control. Treatments were replicated in five randomized
complete blocks separated by 25' weed-free alleys. Sprays were applied with
a C02 pressurized sprayer mounted on an Allis-Chalmers Model G tractor.
Three nozzles (D3-45) were used per row; one overhead and one drop on each
side. The delivery rate was 50 gpa with a boom pressure of about 50 psi
and a speed of 2 mph. Sprays were applied April 17, 19, 25, 30, May 8,
and 16. Twenty plants were rated for damage on the head and first 4
wrapper leaves in each plot on May 29 using a scale of 1-6 as in Green
et al., Jour. of Econ. Entomol. 62(4):798-800. The percentage of heads
that were marketable was based on the frequency of heads with damage ratings
of 3 or less.

The infestation was considered moderate. All the insecticides were
effective at labeled rates with Pydrin at 0.1 (lb ai/acre) being the most
effective and Lannate at 0.9 the least. The addition of Coax at 2.0
increased the efficacy of SOK-Bt at 0.25. The significant (P < 0.05) rate
response that occurred with SOK-Bt was eliminated by the addition of Coax;
i.e., the efficacy of SOK-Bt at 0.25 + Coax was not significantly (P > 0.05)
different than SOK-Bt at 1.0 alone. The addition of Coax to SOK-Bt at
0.5 and 1.0 did not significantly (P > 0.05) increase efficacy. It is
interesting to note that the application of Coax alone significantly (P < 0.05)
increased marketability over the untreated check. No phytotoxicity was
observed.






-2-


Insecticide Damage Percent
Ib ai/A rating* marketability*

UTC 3.48 a 61.0 f
Water 3.38 a 71.0 ef
SOK-Bt 0.25 2.74 b 85.8 cd
SOK-Bt 0.50 2.40 bcd 92.0 bed
SOK-Bt 1.0 2.06 def 99.0 ab

Coax 2 lb 3.16 a 78.0 de
SOK-Bt 0.25 + Coax 2 lb 2.34 bcd 95.0 abc
SOK-Bt 0.50 + Coax 2 lb 2.22 cde 93.0 abc
SOK-Bt 1.0 + Coax 2 lb 2.08 def 96.0 abc
Lannate 1.8L 0.9 2.64 be 91.0 bcd

Monitor 4E 1.0 2.06 def 94.0 bcd
Pydrin 2.4EC 0.1 1.54 f 100.0 a
Pounce 3.2EC 0.1 1.80 ef 100.0 a
Pay-off 2.5EC 0.02 2.24 cde 94.0 abc
Pay-off 2.5EC 0.04 2.00 def 95.0 abc

Bay FCR 1272 2EC 0.022 2.06 def 98.0 abc
Bay FCR 1272 2EC 0.044 2.16 de 90.0 ed
Ammo 2.5EC 0.04 2.12 de 93.0 abc
Ammo 2.5EC 0.06 1.86 ef 99.0 ab
Larvin 3.2F 0.75 1.86 ef 100.0 a

Means within each column followed by the same letter are not
significantly different at the 5% level by Duncan's Multiple
Range Analysis. Damage ratings and percent marketability were
transformed (x2 and sine-1 /x, respectively) prior to analysis.


Compound


Source and Composition


Ammo


Bay FCR 1272



Coax


Larvin


Pay-off


FMC Corporation, a 2.5EC formulation of
cypermethrin.

Mobay Chemical Corporation, a 2.0EC
formulation of baythroid, a synthetic
pyrethroid.

Buckeye Cellulose Corporation, a feeding
stimulant formulated as a wettable powder.

Union Carbide Agricultural Products Company,
3.2F and 80DF formulations of thiodicarb.

American Cyanamid Company a 2.5EC formulation
of flucythrinate.




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