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record of the Institute for Food and
Agricultural Sciences and should be
used only to trace the historic work of
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Copyright 2005, Board of Trustees, University
University of Florida
0 7 CENTRAL FLORIDA RESEARCH AND EDUCATION CENTER
Sanford, Florida I.F.A.S.- Univ. of Florida
Research Report SAN 85-7 September 1984
CATERPILLAR CONTROL ON CABBAGE, SPRING, 1982
G. L. Leibee
'Copenhagen Market' cabbage was transplanted October 25 in Myakka
fine sand on the University of Florida's Agricultural 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 lbs. a.i. per acre was applied pretransplant in a 15" band
for nematode control. Vegedex 4EC at 4 lb ai/acre was applied for weed
control. Treatments were replicated in four randomized complete blocks
separated by 25' weed-free alleys. Sprays were applied with a CO2
pressurized sprayer mounted on an Allis-Chalmers model G tractor. Three
nozzles were used per row; one overhead (TX24) and one drop (TX12) 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 November 3, 10, 18, 22, and
30, December 14, 22, and 29. Twenty plants were rated for damage on the
head and first 4 wrapper leaves in each plot on Januar 3 using a scale of
1-6 as in Greene et al., Journal of Economic Entomoldgy, 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 level was considered heavy. The synthetic pyrethroids,
Ammo, Payoff, and Pydrin, were the most effective, followed by Larvin and
SOK-Bt. Significant (P < .05) rate responses occurred with Ammo and SOK-Bt.
The efficacy of Lannate at .25 lb and SOK-Bt at .5 lb ai/acre was reduced
with the addition of Coax at 2 Ib/acre. No phytotoxicity was observed.
Insecticide and lb. ai/acre Damage rating* % Marketability
Untreated check 5.39 a 0.0 f
Lannate 1.8L .5 3.22 be 66.3 cde
Lannate 1.8L .25 3.13 bc 70.8 cd
Lannate 1.8L .25 + Coax 2.0 3.54 b 44.5 e
SOK-Bt .5 2.57 def 82.8 abc
SOK-Bt .5 + Coax 2.0 3.01 ed 68.5 cde
Ammo 2.5EC .02 2.45 ef 87.5 bc
Ammo 2.5EC .04 2.22 f 98.0 ab
Ammo 2.5EC .06 2.17 f 100.0 a
Payoff 2.5EC .02 2.30 f 97.0 ab
Payoff 2.5EC .04 2.25 f 97.0 ab
Larvin 3.2F 1.0 2.90 cde 72.5 cde
Larvin 80DF 1.0 2.51 def 38.8 abc
Pydrin 2.4EC .1 2.18 f 98.3 ab
*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 percentages were transformed
(x2 and sine-1 Ax, respectively) prior to analysis.
Source and Composition
FMC Corporation, a 2.5EC formulation of
Buckey 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.