The paper presents the results concerning the pest American bollworm Helicoverpa armigera Hbn. at maize which, in Romania are not studied. The obtained data represent original contributions for the study of the pest. The researches were carried out with the help of the pheromonal traps and of the phytosanitary inspections. The results concerning Helicoverpa armigera Hbn. were also published in the precedent years and so that they are accessible. The  data are new ,and the results present  the progressive spreading of the  pest   in the Timiş County from 2005 to 2007 as well as the  significant increasing of the frequency attack (F%), intensity attack (I%) and attack degree (AD%) caused by Helicoverpa armigera Hbn.

Helicoverpa armigera; spreading; pheromonal traps; attack; attack degree (AD%); Timiş County

Presentation: oral