Rose Tortrix, Archips rosana

Archips rosana, Rose Tortrix is a polyphagous pest of mainly fruit crops and forest trees. It is also known as European leaf roller or Currant leaf roller. It has wide host range, such asy apple and pear, peach, plum and quince, rose (Rosa); birch (Betula), maple (Acer), plane (Platanus), poplar (Populus), oak (Quercus), lime (Tilia), ash (Fraximus), elm (Ulmus), as well as bushes and annual or perennial plants: currant, raspberry, hop, hazel, laurel (Larrus), privet (Ligustrum), honeysuckle (Lonicera), myrtle (Myrtus), lilac (Syringa vulgaris), quelder-rose (Viburnum), nettle (Urtica). This species is distributed throughout Europe, North Africa, Asia Minor, Middle East, Iran, Iraq and North America.

Pheromone for Rose Tortrix, Archips rosana

Russell IPM manufacture and supply pheromone lures, traps and complete monitoring systems for Archips rosana, Rose Tortrix . Pheromone trap data gives early warning of the infestation and also exhibits the density of the insect population.

Biology of Archips rosana

Adult: 17 to 19 mm wingspan in the male, 19 to 22 mm inr the female. Adult: lifespan of 15-20 days. A mature female lays120 to 150 eggs. Larva 18 to 22 mm long, olive green but capable of varying depending on its food, from yellowish to purple; shiny brown head and thoracic plate; brownish thoracic legs; lightly coloured abdominal legs with dark brown crochets; sometimes a medio-dorsal line of a slightly darker green; long silvery bristles which protrude from small whitish warts are disseminated over the whole body Larval development lasts 28 to 55 days. The young caterpillars penetrate buds and bind the young leaves together with silk. Pupal development lasts 15 to 20 days. One generation per year. Hatching takes place from the end of February to the beginning of May depending on the temperature and the region; it finishes by the second flowering of apple trees. It occurs at intervals over an extended period following the exposition of the egg-rafts. Pupation occurs inside shrivelled leaves. Flights are observed from end of May to end of July. Eggs remain in diapause until the next spring (according to inra.fr).

Nature of Damage

The larvae feeding in rolled leaves of apple, pear raspberry. Infestations also reported in cultivated rose. The incisions on the bud peduncle lead to premature drop. Also, the fruits in contact with leaves are nibbled quite deeply in May and June which results in a local cessation of growth and in quite marked deformations (according to inra.fr).

Pheromone application guidelines

The following notes are guidelines of general nature and meant to give the user a head start in implementing pheromone monitoring programme. Local conditions and practices can very and can lead to customisation of the programme.

Trap selection

The Deltra trap  is most sensitive trap to use for monitoring this insect. However, Moth catcher  may be used in dusty condition or in high moth population density. Do not re-use the trap to monitor different insects as this may lead to mixed catches.

Trap density

Two traps per hectare (2trap/ha) for small holdings and in field of uneven topography. One trap for every two hectares of large scale fields of homogenous lands.

Trap position

Near the highest point of the plant using supporting posts approximately 1 meter high or higher if the crop is higher.

Trap data and interpretation

Collect date weekly from the start of the flight of the over wintering generation.. During the height of the population more frequent reading may be needed. Decisions on pesticide application should not be taken solely on the trap catch data. Climatic and biological considerations should be taken in account. 

Lures

Lures can be changed every 4-6 weeks to get the most accurate results.

Lures handling 

Pheromone lures are very sensitive tool. They can be affected by exposure to elevated heat and direct sunshine. Direct touching by hand may cause cross contamination leading to mixed catches in the trap. Some contaminants such as Nicotine may have repellent effect reducing trap catch.

Lure Storage

Cool dry place. Shelf life can very from 3-36 months depending on the storage temperature.  See Technical Data Sheet for further details.