chemical care
of different brand names may have the same IRAC
number and that insecticides belonging to IRAC
number 1A (Carbamates) are of the same mode of
action as 1B (Organophosphates) and should not
be rotated in sequence. A typical rotation program
would rotate insecticides of different modes of
action (or IRAC numbers) for different generations
of the target pest," Chong says. "For chinch bugs,
that means using products of a single mode of ac-
tion for about 2 months (1 1/2 months in Florida in
the summer) then changing to products of another
mode of action."
Unless the population is especially large and
damaging, a few treatments at 14 days apart
should do well in preventing damage, he says.
While there are a lot of insecticides registered
for management of chinch bugs, Chong recom-
mends carbamates (1A), organophosphates (1B) and
pyrethroids (3).
"In my experience, most of the systemic neonic-
otinoids (4A) are for suppression at best, except for
clothianidin (Arena, Aloft), which has good effi cacy
and is quickly becoming a good choice for manag-
ing the pyrethroid-resistant population in Florida,"
Chong says. "Chlorantraniliprole (Acelepryn) is also
labeled for suppression of chinch bugs and must
reapplied ahead of the population build up."
F E B R U A R Y 2 014 To t a l L a n d s c a p e C a r e . c o m 15
Text
INFO
to
205-289-3796
or
visit
TLC
request.com
Southern chinch bug nymphs are reddish-orange with a white band
across their backs. Adults are black with white wings that can be either
long or short.
PHOTO
COURTESY
OF
DAVID
SHETLAR,
THE
OHIO
STATE
UNIVERSITY,
BUGWOOD.ORG
