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Damage by cotton bollworm (Helicoverpa armigera Hubner) in grapevine



Damage by cotton bollworm (Helicoverpa armigera Hubner) in grapevine



Novenyvedelem 32(5): 229-234



An outbreak of adults of the noctuid Helicoverpa armigera on grapevines in Hungary in the 3rd 10-day period of August 1995 is reported. The eggs were laid in batches of up to 100 eggs with 1-12 eggs/berry on the surface of grape berries on the southernmost clusters. Egg mortality was 90% on grape clusters that were taken into the laboratory, but no parasitoids were observed. Newly-hatched larvae bored into the grapes, and on white varieties the entry holes were surrounded by brown rings.

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Damage of cotton bollworm Helicoverpa armigera Hubner in grapevine A gyapottok-bagolylepke Helicoverpa armigera Hubner kartetele szoloben. Novenyvedelem. Majus; 325: 229-234, 1996

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