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Apples and Pears |
Codling moth (Cydia pomonella)
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Pest description:
Young larvae of the codling moth are whitish in colour with dark heads. They grow to about 20 mm in length, typically pink with dark brown heads. They do not have the anal comb like the flase codling moth. The brown pupae are formed in cocoons under rough bark. The adult codling moth is inconspicuous. At rest, it is about 10-15 mm long, predominantly grey, with wavy dark cross bands on the forewings and a typical bronze coloured spot near the tip of each front wing. The hind wings are lighter in colour.
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Typical Damage:
Codling moth larvae eat into the fruit soon after hatching. They enter via calyx or stalk ends while the fruits are small, but mainly through the sides later in the season. Inside the fruit, the larvae make tunnels, usually penetrating to the core. They excrete granular brown frass, some of which is pushed out of the tunnel entrances to create a typical external symptom of infestation, especially early in the season. Late-season infestation is characterized by higher colouration of the fruit around the entry sites. Fruits damaged early in the season drop or become grossly malformed. Less serious blemishes occur when marginally poisoned young larvae penetrate 5-6 mm before dying, resulting in corky indetations of the fruit. Fruit damage later in the season causes accelerated ripening, often followed by premature drop.
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Dosage Table
15 ml / 100 litre water
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Apply as a full cover spray. Thorough coverage is important. Commence application at the beginning of a moth generation or at ¾ petal fall (in the case of the first generation). Repeat at 14 day intervals for a maximum of four applications. To prevent or delay the development of resistance, products with other modes of action should be applied for the control of the other two generations of codling moth.
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