Damage of Helicoverpa armigera on grapevine in Hungary
In late August 1995, the vineyards of Szekszárd in the County of Tolna in Hungary were attacked by Helicoverpa armigera (EPPO A2 quarantine pest). Adults laid eggs onto the surface of grapevine berries (up to 100 eggs per cluster, and 1-12 eggs per berry). Young larvae make minute holes in the berries. More developed larvae gnawed deep holes in many berries which become soiled by excrement. Damage were more severe on white cultivars than on red cultivars. However, it must be stressed that grapevine is hardly a suitable host for H. armigera. When attacked grape clusters are taken into the laboratory, the egg mortality is 90% and very few can reach pupation.
Sources
Vörös, G. (1996) Damage of cotton bollworm (Helicoverpa armigera Hübner) in grapevine.
Növényvédelem, 32(5), 229-234.