SAgricultural Research Center i"
Hastings, Florida Jif. I
Hastings ARC Research Report PR-1976-1 October 1976 .
CABBAGE INSECT CONTROL IN THE HASTINGS AREA ';.
R. B. Workman, Assoc. Entomologist '" i'
FOLLOW ALL DIRECTIONS FOR USE AND SAFETY ON THE PESTICIDE LABEL AT ALL TIMES.
Insect Insecticide Amount/ Cutoff Notes
(E-Emulsible) acre* (days)
Dibrom 8E 1 qt. 1 One application of a systemic aphicide
Dimethoate 2.67E 1-1 1/2 pts. 3 applied when the leaves begin to cup
Cabbage Meta-Systox-R 2E 1 1/2 pts. 24 usually gives season long control.
aphid Monitor hE 1 pt. 35 Good coverage is important. Curled at
Parathion 8E 1/2 pt. 10 yellowed heads cannot be cleaned up.
Phosdrin 2E 1 pt. 1 Aphids are not attracted to headed
Systox 2E 1 1/2 pts. 21 cabbage. Aphid sprays are not needed.
Bacillus Cpds: Biotrol, Dipel, Thuricide, Etc. Follow label directions.
Cabbage Fundal and Galecron have been withdrawn from the market.
looper LannateNudrin9OS 1/2-1 lb. 1 1/2 lb. effective on a weekly program
Monitor hE 1 pt. 35 Broccoli-14 days,cauliflower-28 days.
Other Dibrom 8E 1 qt. 1 Compounds for loopers will control
worms, Parathion 8E 1/2 pt. 10 most species. Cutworm control is best
cutworms Phosdrin 2E 1 qt. 1 applied prior to transplanting.
M.Cricket Diazinon hE 1 pt. 7 Drench or spray. Do not increase
Cutworm Parathion 8E 1/2 pt. 10 dosage. Burning may result.
(seedbed) Baits Apply during late afternoon.
adjust dosage for different formulations (2E, 4E, 8E, WP. Etc.)
FALL WORMS: (10-12 species) Cutworms attack new set plants. Drenches or sprays give
effective control. Corn-sorghum worms feed in cabbage buds, bore into heads. Treat
early with full coverage into bud. Bacillus cpds will not control these insects. No
pesticides will kill worms inside heads. Diamondback larvae and webworms injure buds
fall and spring. Light bud damage increases greatly as the leaves grow out. Worm
damage is often low during cold months (Jan.-Feb.).
SPRING WORMS: Imported cabbageworm (white butterfly) and cabbage looper (gray moth)
increase heavily during Mar.-Jun. Treat weekly for best control. 50 gals./A. is
adequate if coverage is thorough. Use 1 nozzle overhead and 2 on drops close to
head to concentrate spray on sides of leaves and head. Cabbage loopers feed on bot-
tom of head near harvest. The ICW is more of a top feeder and is easier to control.
APHIDS: 2 species of aphids attack cabbage. The cabbage aphid (waxy blue) causes the
leaves to yellow and curl. The green peach aphid (light green) is found on the under-
sides of lower leaves. It also attacks potatoes and other crops. Both aphids are
killed by a small wasp during Mar.-Jun. which causes them to become straw-colored and
swollen. 1 application of a systemic insecticide, applied at cupping, often gives
season control of cabbage aphids. The green peach aphid causes little damage to
cabbage but may injure potatoes. Disc cabbage seedbeds and fields under after
harvest to prevent insect buildup and movement to other fields.
WRAPPER LEAVES: Pack sparingly to reduce pesticide residues and insect damage.
LIFE CYCLE: Cabbage worms have egg, larva, pupa, and adult stages taking about 30
days from egg to egg (longer during cold weather). Eggs, larvae, and pupae are found
on or near the host crop. Moths are most active at night, butterflies during the day.
Major sources of adults are those living year around in the area and those flying
from other areas. Adults often hide in weeds or brush about fields during periods
of low activity so may avoid spray treatments. Body hairs also help them avoid
contact with insecticides.
10-1-76 200 copies