Leś. Pr. Bad., 2009, Vol. 70 (3): 271-275.

Próba użycia insektycydów z grupy neonikotynoidów do ochrony żołędzi na plantacji nasiennej dębu szypułkowego (Quercus robur L.) w Nadleśnictwie Leżajsk
Use of neonicotinoid insecticides for the protection of pedunculate oak (Quercus robur L.) acorns in the seed orchard in the Leżajsk Forest District

Cezary Bystrowski, Grzegorz Wójcik
Instytut Badawczy Leśnictwa, Zakład Ochrony Lasu, Sękocin Stary, ul. Braci Leśnej 3, 05–090 Raszyn; Fax +48 22 7150557; e-mail: C.Bystrowski@ibles.waw.pl

Abstract. Three neonicotinid insecticides: Apacz 50 WG, Confidor 200 SL and Mospilan 20 SP were used to control acorn pests Curculio spp. (Curculionidae: Coleoptera) and Cydia spp. (Tortricidae: Lepidoptera) in the oak (Quercus robur) seed orchard in the Leżajsk Forest District (South-Eastern Poland). The best effect was observed on the plot treated with insecticide Apacz 50 WG, where only 3% of acorns were damaged by Curculio spp. larvae. The percentage of damaged acorns was significantly higher on plots treated with Confidor 200 SL and Mospilan 20 SP – 30% and 35%, respectively. The level of acorn infestation by Cydia spp. larvae was less than 2% of seeds on all analyzed plots.

Key words: Curculio spp., Cydia spp., neonicotinoid insecticides, pest control.