fb_ 6 y_
Mimeo Report POL 68-1* Oct
CABBAGE, CORN, AND POTATO INSECT CONTROL IN THE HASTINGS AREA
R. B. Workman, Assoc. Entomologist
Follow the safety precautions on the insecticide label
correct dosages are used. Insecticides and fungicides
Mixing of herbicides and fertilizers with insecticides
down and is not recommended. NTL: No time limit when
CT 2 7 o'7
at all times. Make sure
may be applied together.
may cause chemical break-
used as recommended.
INSECTICIDES RECOMMENDED FOR CONTROL OF CABBAGE INSECTS
Insect Insecticide Amount Minimum days Notes
(E=Emulsible) per acre before harvest
Dibrom 8E 1 pt. 1 Fast, short activity.
Cabbage Cygon 2.67E 1-1 pts. 3 Fast, long activity.
aphid Parathion 4E -1 pt. 7-., 10-1 pt. Fair control only.
Phosdrin 2E 1 pt. 1 Fast, short activity.
Systox 2E 1i pts. 21 Fast, long activity.
Meta-Systox-R 2E 1I pts. 24 Fast, long activity.
DDT 2E plus 2 qts. + 21 Fewer wrapper leaves will
Cabbage Toxaphene 8E 1 qt. give lower residues.
looper, Dibrom 8E 1 qt. 1 Effective on loopers.
Worms, Parathion 4E 1 pt. 10 Control slipped last season.
Cutworms Parathion 4E + 1 pt. + 14 Fewer wrapper leaves will
Toxaphene 8E 1 qt. give lower residues.
Phosdrin 2E 1i-2 pts. 1 Higher dosage for loopers.
Bacillus thur. 2 qts. NTL Looks promising.
Mole Diazinon AG500 1 pt. NTL Spray or drench. Treat area
cricket Parathion 4E 1 pt. NTL around seed bed for best con-
Cutworms trol. Do not increase dosage.
(seed bed) Baits _____ ___Results are often erratic.
INSECTICIDES RECOMMENDED FOR CONTROL OF IRISH POTATO INSECTS
Insect Insecticide Amount Days prior
(E=Emulsible) per acre to harvest Notes
Aphids Cygon 2.67E 1-1 pts. 7 Use 1 pts. of Cygon for
Meta-Systox-R 2E i1 pts. 7 heavy infestations.
Systox 2E li pts. 21
Thiodan 2E 1 qt. NTL
Cutworms, Parathion 4E P-1 pt. 5 Use 1 pt. of Parathion for
Plantbugs, Thiodan 2E 1 qt. NTL loopers. Spray up to 1 week of
Tuberworm, Toxaphene 8E 1-2 pts. NTL digging for cutworms and tuber-
Worms _____ worms.
Wireworm Diazinon AG500 1-2 qts. NTL Preplant soil application.
Parathion 4E 2 qts. NTL _
Leafminer May be numerous at harvest but rarely cause damage.
POTATO INVESTIGATIONS LABORATORY
INSECTICIDES RECOMMENDED FOR CONTROL OF FIELD CORN INSECTS
Insect Insecticide Amount Days before Notes
(E=Emulsible) per acre harvest ___
Budworm, DDT 2E 2-4 qts. NTL High dosages for earworms. Do
Earworm Parathion 4E -l pt, 12 not feed forage or ensilage
Sevin 80W 2- lbs. NTL treated with DDT or Toxaphene
Toxaphene 8E 1^-2 pts. NTL to dairy animals or animals
Being finished for slaughter
Stinkbug Use lower rates of above insecticides. DDT is not effective. Stinkbugs
Skill the developing kernels by feeding through the husk.
ThM earlier corn can be grown, the less subject it is to insect damage.
REGULAR TREATMENTS: Last season's climatic injury to potatoes resulted in fewer
pesticide applications to conserve costs. Insect injury at harvest was greater
than usual. Regular pesticide treatments give increased yields of quality produce.
CABBAGE HARVESTERS: A number of experimental cabbage harvesters have been built
and some commercial units may be used this year, mainly, on krautt" cabbage.
Efficient harvesters for fresh market cabbage should be available within the next
year or so. Thought should be given to methods of trimming, grading, and packing.
Some cabbage was trimmed to 2 wrapper leaves, graded to weight, and shipped in
cartons from Florida last season. This cabbage was well received and may initiate
a demand. Close trimming of wrapper leaves will reduce the residue problem.
INSECTICIDES: Parathion control of cabbage loopers slipped last season. Best
results are obtained with thorough coverage while the worms are small. Bacillus
thuringiensis (bacteria) formulations are recommended this year. Cabbage loopers
only are affected. The disease kills the worms after it is engested. Regular
and thorough coverage is needed for control.
INSECTS: Tuberworms caused moderate damage to potatoes last season. Warm dry
weather and a decrease in pesticide application were responsible for the outbreak.
Worms were found in tubers at the graders. Receivers do not want infested potatoes
as they must fumigate to prevent further damage and spread of the insect to stocks
in storage. Some potato fields were abandoned in Alabama last season due to
CABBAGE APHIDS: Application of a systemic insecticide several weeks after trans-
planting will generally give season long control.
CURE-ALLS, FANTASTICIDES, ETC: Use of unknown or unaccepted pesticides may result
in crop loss through control failure or illegal or undesirable residues on the
harvested produce. Find out everything you.can about any new material before
* Revision of Mimeo Report POL 67-3