Adult(resting) Length 9-12 mm, forewings purplish ochreous with distinctive dark reddish brown markings. Egg Flat, almost circular, light green. Black centre when mature. Laid in scale-like batches on leaves. Larvae Up to 22 mm long. Yellow-green, olive …
Larvae are leaf-rollers but damage to foliage is unimportant. Damage to fruits occurs at different times during fruit development: Overwintered larval feeding cavities in the receptacle of flowers and young fruitlets later heal to form corky scars …
Pheromone traps The flight activity of male moths (along with that of the codling moth and summer fruit tortrix moth) should be monitored using sex pheromone traps (a different trap is used for each species). The delta design is used widely. Traps should …
The rate of development of each of the development stages of fruit tree tortrix moth is only completed when a known heat sum has accumulated. Heat sums can be calculated each day from the daily maximum and minimum air temperature. PESTMAN can be used to …
Chemical control Control with spinosad (Tracer) or the synthetic pyrethroid deltamethrin (Decis Forte etc): Spinosad (Tracer) and the synthetic pyrethroid insecticide deltamethrin (Decis Forte etc) are approved for control of tortrix moth and other …
This objective is met by the provision of services, training and the carrying out of research and as an independent, not for profit organisation, Niab directs any surplus generated from activities towards achievement of its charitable aims. The …
Hey, G. L. & Massee, A. M. 1934. Tortrix investigations in 1933. Annual report for East Malling Research Station 1933, 228-230. Van der Geest, L. P. S. & Evenhuis, H. H. (Eds). 1991. Tortricid Pests, Their Biology, Natural Enemies and Control . World Crop …
Life cycle Pest status Other hosts Varietal susceptibility Distribution Recognition Damage Monitoring Forecasting Control methods Further …
Fruit tree tortrix moth is a moderately important pest of apples and pears in the UK. The life cycle is simple with the pest overwintering as a second or third instar larva which emerges in spring after bud burst and feeds on the trusses. Pupation occurs …
The rate of development of each of the developmental stages of summer fruit tortrix moth is only completed when a specific heat sum has accumulated. The specific heat sums are known and can be calculated each day from the daily maximum and minimum air …
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