Agronomic Crops

White Grubs
White grubs are the larvae of May or June beetles. ey are C-shaped and white to cream in color. Adult beetles lay their eggs
in grass or sod.
DAMAGe: e damage caused by white grubs is similar to that of corn rootworm larvae.
ContRoL: Soil insecticides at planting or seed treatments offer some control/suppression of infestations.
tHResHoLD: Treatment is preventive. See the table below for products used to control/suppress belowground pests.
Wireworms
Wireworms are the larval stages of click beetles. e larvae are elongated, slender, and usually brown. Depending on species,
larvae may take 2 to 5 years to mature. is pest is often difficult to control in fields that were fallow or in pasture before being
planted in corn. Large larvae in the field at planting are the most destructive.
DAMAGe: Wireworm larvae feed on the seeds and roots and will bore into the underground portion of the plants. is boring
may lead to deadheart, a condition that severely stunts or kills the plant.
ContRoL: Soil insecticides at planting or seed treatments offer some control/suppression of infestations.
tHResHoLD: Treatment is preventive. See the table below for products used to control/suppress belowground pests.
Belowground Pests of Corn
Insecticide
Amount of
Formulation per Acre
Application and Comments
seed treatments
clothianidin (CN )
Poncho 250
Poncho 500
imidacloprid (CN)
Gaucho 600
thiamethoxam (CN)
Cruiser 5FS
In Furrow, Banded,
or t-Banded
bifenthrin (P)
Capture LFR
chlorpyrifos (OP)
Lorsban 15G
phorate (OP)
imet 20G
phosphorothioate (OP)
Aztec 2.1G
tefluthrin (P)
Force 3G
terbufos (OP)
Counter 15G
0.25 mg ai/ kernel
0.5 mg ai/ kernel
0.64 mg ai/ kernel
0.25 mg ai/ kernel
0.2 – 0.4 oz./1,000 row ft.
8 oz. /1,000 row ft.
4.5 – 6.0 oz./1,000 row ft.
6.7 oz. /1,000 row ft.
3 – 4 oz./1,000 row ft.
6 – 8 oz. /1,000 row ft.
Commercially treated seed.
Can be applied on-farm or treated commercially.
Commercially treated seed.
Applied in-furrow, T-banded, or banded.
Recommended use as t-band application.
Lorsban 15G is compatible with all ALS inhibitor herbicides applied in accordance with the label.
Do not use for in-furrow application. Banded: Place granules in a 7-inch band over the row or directly behind the planter shoe in front of or
behind the press wheel and lightly incorporate. Accent® herbicide and Beacon® herbicide may be applied after banded applications of imet
20G Lock’n Load.
Apply as a 3- to 4-inch band.
Banded: Place granules in a 7-inch band directly behind planter shoe in front of or behind press wheel. Do not apply product as a band or T-
band unless it can be incorporated into the top 1 inch of soil using tines, chains, or other suitable equipment.
In-furrow treatment only. ALs-inhibiting herbicides should not be used if Counter 15G has been applied at the time of planting. see
product label for additional information.
Crop Name Corn 51