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Pest Management Options:  Codling Moth Mating Disruption

 

Codling moth mating disruption works best in large, contiguous areas of orchard or isolated locations (minimum 5 to 10 acre blocks). Dispensers should be placed in the orchard at bloom. Ideally, a biofix (first moth flight) for each orchard should be determined by hanging a pheromone trap in a nearby, non-mating disrupted site. It is impossible to get an accurate biofix within an orchard that has been historically using mating disruption due to the low moth population. The biofix date is used to determine the timing for supplemental sprays.

Monitor codling moth using large plastic delta traps with a sticky liner and lure.  High load codling moth lures must be used because the high concentration of pheromone in disrupted orchards masks traps with the standard lures.  Traps should be used according to the following guidelines:

    • hang traps at Red Delicious bloom
    • hang in upper third of tree canopy
    • one trap/10 acres (minimum 2 traps per orchard), plus traps in hot spots
    • check traps once/week, and count and remove moths, or keep a running tally for each generation or since the last insecticide spray


Characteristics of common mating disruption dispensers

Brand Type Rate Cost
(approx)
Effectiveness Notes
Isomate-
CM Flex
hand-
applied
loops
200-
400/acre
$100/acre
(at 400/ac
rate)
very effective hang high in tree
Isomate CM Mist aerosol
device
1/acre --- effective on
blocks 30-35 
acres or greater
and with low
CM pressure
hang high on mounted posts or in
tree; requires addition of hand-
applied dispensers on outer rows;
Checkmate
CM-XL
hand-
applied
clips
200/acre $100/acre somewhat effective hang high in tree
Checkmate
CM-O
Puffer
aerosol
device
1/acre $120/acre effective on
blocks 30-35 
acres or greater
and with low
CM pressure
hang high on mounted posts or in
tree; requires addition of hand-
applied dispensers on outer rows;
distributer will map where products
will hang


Lure types for monitoring pests in mating disrupted orchards

Lure Name Longevity Threshold to
Apply
Supplemental
Spray
Notes
1x lure
(standard lure
30 or 60 days --- this lure should not catch any moths in a successful 
MD orchard; only use if you suspect MD failure; can
use this lure in non-MD site to get biofix
10x;
Mega lure
21 days not determined this lure has a high load of pheromone
Trece
CM-DA
Combo
60 days 10 moths
(cumulative)
this lure captures males and femlaes; trap catches will be highter than 10x lure
Trece DA 60 days not determined this lure captures females; not recommended