AGRICULTURAL RESEARCH CENTER, HASTINGS, FLORIDA
Hastings ARC Research Report HAS1982-2
POTATO INSECT CONTROL IN THE HASTINGS AREA
R. B. Workman, Assoc. Entomologist
DIRECTIONS FOR USE AND SAFETY ON THE PESTICIDE LABEL AT ALL TIMES
Ambush, Pounce, Pydrinb/ Aphids resistant to Parathion,
Azodrin 5E 13oz. 7 Phosdrin, & Thiodan. Numbers
Dimethoate 2.67E 1 1/2 pts. None low for several years with
Aphids Lannate, Nudrin 90S 1/2-1 lb. 6 sprays not needed. Spray only
Meta-Systox-R 2E 1 1/2 pts. 7 if high numbers develop in the
Monitor 4E 1 pts. 14 upper part of plants.
Systox 2E 1 1/2 pts. 21
Armyworms,-- Ambush, Pounce, PydrinP/ Hilling deeper protects tubers
Cutworms, Azodrin 5E 13-26 oz. 7 from cutworms and greening.
Tuberworm, Lannate, Nudrin 90S 1/2-1 lb. 6 Lannate & Nudrin give good con-
Loopers, Monitor 4E 1-1 1/2 pts. 14 trol of beet armyworm (black
Colorado Parathion 8E 1/2 pt. 5 dot over 2nd pair of legs).
potato Phosdrin 2E 1 qt. 1 Monitor controls Colorado potato
beetle Thiodan 2E 1/2 qts. None beetle.
Leaf-footed Guthion 2E 1 qt. 7 Feeding is, generally, on flower
Plant Bug Parathion 8E 1/2 pt. 5 stems. Damage to plant is low.
Green Phosdrin 2E 1 pt. .1 Guthion is effective on tuber-
)Stinkbug Thiodan 2E 1-2 qts. None worms.
Wireworm Diazinon 4E 1-2 qts. None Preplant soil treatment. Not a
Parathion 8E 1 qts. None problem for several years.
Leafminer May be numerous at harvest, but rarely cause damage.
a/ Adjust dosage for other formulations (2E, 4E, 8E, WP, etc.).
b/ Ambush, Pounce, Pydrin: Highly active new class of insecticides recently registered on
potatoes, cabbage and other crops. Effective on potato aphids, caterpillars, tuberworm,
plant bugs, Colo. potato beetle, etc. See labels. 0.05 lb actual/A effective on most
problems. Highly effective on cabbage loopers (very serious problem last season).
Cutworms: Damage is usually on greened tubers which are graded out. Keep tubers well
covered to reduce damage and increase yields. To be effective, sprays must contact soil
and lower part of plants where eggs are deposited and cutworms feed first. Cutworms
later tunnel in the upper layer of soil where control is difficult.
Fire ants: Caused losses by tunneling in tubers and interfered with harvesting last sea-
son. Area will be surveyed this year to delineate problem. Control is difficult and
reliable methods are not available.
Molecrickets: Damage is common in some areas. Injury is similar to that of cutworms
but penetrates deeper into the tubers and occurs at all soil depths. Control is not'
promising as molecrickets fly into potato fields and tunnel in the soil.
Sprays: Calibrate sprayers carefully. Identify the pest. ID chart is available. Use
fresh materials. Make sure you use the most effective material as changes occur each
year. Use correct dosage for each particular insect and keep records of all pesticides
and dates applied. Keep all pesticide containers locked up when not in use.
)Chop & disc: All field crops and gardens after harvest to limit pest buildup and spread.