Most conventional insecticides are toxic to the natural enemies of codling moth. Its wing span ranges from 1/4” to 5/16”. If the threshold is exceeded, apply a control treatment as soon as possible. In pear, deep entries are most often noticed when frass appears at the calyx end of the fruit. Larvae are fully grown in three to four weeks, at which time they leave the fruit in search of sheltered places to spin cocoons. This dataset reports codling moth damage to apple fruit ("strikes") in Montana orchards where site managers were not applying pesticides to control codling moth. If trap catches are low or the weather turns too cool for moth activity, you can delay treatment, but continue to monitor. The adult codling moth is a gray colored moth with a brownish black area at the tip of the front wings and faint, wavy, brown cross-bands on the rest of the wings. YOU ARE REQUIRED BY LAW TO FOLLOW THE LABEL. 2019 Codling Moth Damage Survey. If fruit damage exceeds 0.5%, supplemental sprays should be used for the next generation. The term mating disruption is often associated with this control technique. Other botanical and biological insecticides have not been effective at controlling codling moth in organic orchards. Use traps baited with CM-DA combo lures high in the canopy to monitor population development. It is a violation of the law to disregard label directions. May cause outbreaks of mites, especially in orchards with chronic mite problems; addition of 1% oil (volume by volume) and limiting applications to a single application may help mitigate mite problems. Placement of dispensers should be in the upper third of the tree canopy. The most effective spray timing for each generation is outlined below. If the moth is female, the abdomen can be squeezed to eject the bursa pouch and give some idea of whether the moth is unmated, mated once, or more than once. The DA and DA/pheromone combo lure may also be used to assess the success of mating disruption in an orchard, similar to using a supercharged (10X) pheromone lure. For example, the organophosphates have a Group number of 1B; chemicals with a 1B Group number should be alternated with chemicals that have a Group number other than 1B. However, a small percentage of first generation larvae enter diapause, a state of arrested development, and do not emerge as adults until the following spring. Continue to monitor the generations with traps and accumulate degree-days until the crop is harvested or populations decline below damaging levels in September. CODLING MOTH BIOLOGY ^ Codling moth adults don’t cause apple damage directly. On average, the first emergence of codling moth adults starts at 175 (°F) degree days from January 1, so there is no need to use moth capture in pheromone traps to initiate the accumulation of degree-days. Oriental fruit moth- The codling moth is distinguished from these worms by the absence of an anal comb. Mode-of-action Group numbers are assigned by. Stings are shallow entries where a larva burrows into the flesh and then dies or a larva briefly feeds at a location then abandons that site and moves to another location. If no residual or topical ovicides are applied in the 225-275 or 375 degree-day timings, respectively, then insecticides should be applied at 425 degree-days, which targets the beginning of codling moth egg hatch period. If the supercharged traps consistently catch high numbers of moths, monitor fruit in the surrounding area for eggs and damage to determine if a supplemental treatment is necessary. Early maturing apples like Galas and Red Delicious and late leafing walnuts are less susceptible to codling moth damage because their fruit production time is off sync with peak moth activity. 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