Southeastern U.S. Vegetable Crop Handbook - 2022 - 185

INSECT CONTROL
TABLE 2-18. INSECT CONTROL FOR POTATO, IRISH (cont'd)
Amount of
Insecticide, Mode of Action Code,
and Formulation
Formulation Per
Acre
COLORADO POTATO BEETLE (CONT'D)
thiamethoxam, MOA 4A
Seed Piece treatment
(Cruiser) 5 FS
Restricted
Entry Interval
(REI)
Pre harvest
Interval (PHI)
(Days)
Precautions and Remarks
0.11 to 0.16 fl oz/
100 lb
See label for specific instructions. Resistance to neonicotinoid insecticides has
been reported and may reduce efficacy or duration of control by thiamethoxam.
To minimize selection for resistance, do not use foliar applications of any IRAC
MoA class 4A insecticides if any of these compounds were applied to the crop
as soil or seed piece treatments. See comments on insecticide rotation under
Colorado potato beetle. For early-planted potatoes, control may be marginal
because of the prolonged time between application and Colorado potato beetle
emergence. Limit use to locations where Colorado potato beetles were a problem
in the same or adjacent fields during the previous year.
thiamethoxam, MOA 4A
(Platinum) 75 SG
12 hrs
1.66 to 2.67 oz
7
Resistance to neonicotinoid insecticides has been reported and may reduce
efficacy or duration of control by thiamethoxam. To minimize selection for
resistance, do not use foliar applications of any IRAC MOA class 4A insecticides
if any of these compounds were applied to the crop as soil or seed piece
treatments. See comments on insecticide rotation under Colorado potato beetle.
Platinum applied in-furrow at planting time may provide season-long control. For
early-planted potatoes, control may be marginal because of the prolonged time
between application and Colorado potato beetle emergence. Limit use to locations
where Colorado potato beetles were a problem in the same or adjacent
fields in the previous year. See product label for restrictions on rotational crops.
(Actara) 25 WDG
3 oz
12 hrs
7
Resistance to neonicotinoid insecticides has been reported and may reduce efficacy
or duration of control by thiamethoxam. To minimize selection for resistance,
do not use foliar applications of any IRAC MOA class 4A insecticides if any of
these compounds were applied to the crop as soil or seed piece treatments. See
comments on insecticide rotation under Colorado potato beetle. Actara is applied
as foliar spray. Apply when most of the eggs have hatched and most of the larvae
are small (1/8 to 3/16 inch). An additional application should be made only if defoliation
increases. Allow at least 7 days between applications. Do not make more
than 2 applications of Actara per crop per season.
thiamethoxam, MOA 4A + chlorantraniliprole,
MOA 28
Premix (Voliam Flex)
14
4 oz
Resistance to neonicotinoid insecticides has been reported and may reduce
efficacy or duration of control by thiamethoxam. To minimize selection for
resistance, do not use foliar applications of any IRAC MOA class 4A insecticides
if any of these compounds were applied to the crop as soil or seed
piece treatments. See comments on insecticide rotation under Colorado potato
beetle. Voliam Flexi is applied as a foliar spray. Apply when most of the eggs
have hatched and most of the larvae are small (1/8 to 3/16 inch.). An additional
application should be made only if defoliation increases. Allow at least 7 days
between applications. To minimize selection for resistance, do not use foliar
applications of any IRAC MOA class 4A insecticides if any of these compounds
were applied to the crop as soil or seed piece treatments. Do not exceed 8
ounces of Voliam Flexi. See label for rotational restrictions. Voliam Flexi can
be expected to provide control of European corn borer if application is timed
correctly (see European corn borer for correct timing.
EUROPEAN CORN BORER
The Atlantic variety of potato is very tolerant of injury by European corn borer larvae. Consequently, control is not recommended on Atlantic
unless more than 30 percent of the stems are infested. Control on all other varieties is recommended when infestations reach 20 percent infested
stems. Application timing is critical. Scout for eggs and treat when eggs hatch or at the first sign of larvae entering petioles. Several days
of cool wet weather will kill larvae and may eliminate the need for insecticide applications. If this occurs, flag additional egg masses and apply
insecticide at hatch.
pyrethroid, MOA 3A
12 hrs
Apply when threshold is reached (usually during the first half of May). A second
application may be needed if the percentage of infested stems increases substantially
7 to 10 days after the first application. Ground applications are usually
more effective than aerial applications. See Table 2-25 A for a list of registered
pyrethroids and pre-harvest intervals.
chlorantraniliprole, MOA 28
(Coragen) 1.67
thiamethoxam, MOA 4A + chlorantraniliprole,
MOA 28 premix
(Voliam Flexi)
4 hrs
3.5 to 7.5 oz
12 hrs
4 oz
14
14
Correct timing of application is important. Apply when threshold is reached
(usually during the first half of May). Do not apply more than 15.4 ounces
Coragen per acre per crop season.
Voliam Flexi is applied as a foliar spray. Correct timing of application is important
for control of European corn borer. Apply when threshold is reached (usually
during the first half of May). Voliam Flexi can also be expected to provide control
of Colorado potato beetle if most of the potato beetle eggs have hatched and
most of the larvae are small (1/8 to 3/16 inch). Volium Flexi applicatioins targeting
European corn borer will select for resistance to neonicotinoid insecticides
in Colorado potato beetle, if present. To minimize selection for resistance to
Colorado potato beetle, do not use foliar applications of any IRAC MOA class
4A insecticides if any of these compounds were applied to the crop as soil or
seed piece treatments. Do not exceed 8 ounces of Voliam Flexi. See label for
rotational restrictions.
spinetoram, MOA 5
(Radiant) 1 SC
4 hrs
6 to 8 fl oz
7
Do not apply more than a total of 0.25 lb a.i. (32 fl oz) per crop.
2022 Vegetable Crop Handbook for Southeastern United States
185

Southeastern U.S. Vegetable Crop Handbook - 2022

Table of Contents for the Digital Edition of Southeastern U.S. Vegetable Crop Handbook - 2022