RESEARCHES CONCERNING THE SPREADING AND ATTACK PRODUCED BY THE AMERICAN BOLLWORM (HELICOVERPA ARMIGERA HBN.) IN THE TIMIŞ COUNTY PUBLISHEDIoan Pălăgeşiu, Narcisa Crista, Elena Coştiug None
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