engleski

Integrated pest management of Ceutorhynchus species (Coleoptera: Curculionidae) in oilseed rape

In Croatia, oilseed rape is cultivated on about 15 000 ha. Because of the production of biofuels the area of land devoted to rape will rise to as much as 100 000 ha. An increase in the area will lead to an increase in the number and the abundance of pests. The most significant oilseed rape pest is Meligethes aeneus Fabricius, 1775 which can reduce yields by up to 50 %. In the spring, however, damage is caused by Ceutorhynchus napi Gyllenhal, 1837 and Ceutorhynchus pallidactylus Marsham, 1802 the larvae of which drill mines in the stalks, the plants in consequence lagging in growth and development. Research into stem mining weevils on oilseed rape has in recent times, as well as with yellow traps, also been conducted with sticky traps. During 2007 the density of stem mining pests in oilseed rape was carried out at three sites in the inland part of Croatia with the use of yellow sticky traps and yellow water traps. On the basis of the size of the population of adult individuals, a detailed survey of oilseed rape plants was carried out, the objective being to ascertain the intensity of the stem-mining weevil infection.

oilseed rape; population density; Ceutorhynchus napi; Ceutorhynchus pallidactylus

nije evidentirano