LC . .... -- _-__ w.m maw
AGRICULTUPPL RESEARCH C-ETTER i UME LIBRARY
ofJ L 7 3 / HASTITG., FLORIDA
P ilreo Research Report. PR-1973-1. OCT 2 9 1,973
CADBAGE1 INSECT CONTROL IN THE HASTINGS AREA
R. B. Workman, Assoc. Entomologist Univ.f Frida
FOLLOW ALL DIRECTIONS FOR USE ATTD SAFETY ON THE PESTICTDE LABEL ATLL TITS.
Insect Insecticide Amount/ Cutoff lotes
______(-Eiulsible) acre (days)
Dibirion 8E 1 qt. 1 Systemic op.hinide ap!plJe-' ,t ,cupping"
Dim~ti'ra a .ti'( l--lJ pts. 3 will usually give season-long corn trcl.
Cabbage Mta-3Systo-71 2E l pts. 2-' Aphid-Covered 1heads cannot be cleaned
aphid tionritor W. _1 pt, 21 up. Heading cabbage appears resistant
Par6hEbion 65 pt. 10 to aphids.
Pho.drin 2E 1 pt. 1
Systox 2E 11- pts. 21
Bacillus Cpds ** None See below.
Cabbage Fundal hE 1 pt. 14 Fundal and Galecron the same. Fggs and
looper Galecron hE 1 pt. 14 small larvae are killed. Long_ lasting.
Lannate 90S 5-1 lb. 1 Large loopers not controlled by 1 lb.
Monitor 4E 1 pt. 21 Cutoff for cauliflower is 7 ays.
Other Dibrom 8E 1 qt. 1 Compounds for loopers will control
worms, Parathion 8E 1- pt. 10 most species. Large cutworms are
cutworms Phosdrin 2E 1 qt. 1 difficult to control.
M.Cricket Diazinon hE 1 pt. 7 Drench or spray. Do not increase dosage.
Cutworm Parathion 8E 1] pt. 10 Burning may result.
(seedbed) Baits Apply during late afternoon.
Adjust dosage for different formulations (2E, 4E, 8E, P. Etc.)
BIOTROL, DIPEL, THURICIDE: Follow label recommendations. Low rates are for
low to medium infestations. High rates are for large populations.
CUTWORMS: Cutworms are usually present in the soil when cover crops are turned
under. Cabbage transplants are attacked at night following setting. Insecticide
sprays or drenches reduce the amount of injury and treatments can be applied before
plants are set. Several may be necessary for best control of large cutworms.
50 GAL/A: 2 year's tests show that insecticides applied at 300 psi in 50 gal.
of water per acre and with 3 nozzles per row, 1 overhead and 2 drops, were nearly
as effective as sprays with 100 GPA and 6 nozzles. Sprays should be put on regu-
larly when worms are present. Heavy weed growth will limit best coverage of the
underleaves where most looper eggs and small larvae are found.
WORMS FEEDING INSIDE TIH HEAD: Little can be done as the worms remain in the
head until pupation. Maintain usual sprays to prevent reoccurrence. This problem
occurs during the fall and involves corn earworms and several armyworm species
moving from other hosts--corn, sorghum, grasses, etc.
APHIDS ON POTATO: Green peach aphids develop on the lower leaves of cabbage in
the spring becoming a major source of the populations on potatoes. Cabbage fields
should be chopped and disced shortly after final harvest to reduce aphid movement.
.. APPER LEAVES: Reduce pesticide residues with fewer wrapper leaves per package.
SPRAY SCHEDULES: Worm damage is limited by cold weather in Dec.-Feb. Sprays
can be reduced at this time. Weekly sprays are usually required for lowest insect
damage during jMar.-1lay. Fall worms ( 10 species) need close attention.
DOUBLE DOSAGE: T-,ts last season showed that doubled insecticide dosages gave
S only sligb;c,"ly better vorn control. Most insect control problems result from using
the wrong insecticide, tre-ting too late, or poor coverage.