Glasilo biljne zaštite, Vol. 13 No. 5, 2013.
Original scientific paper
Occurence of pyrethroid resistant pollen beetle (Meligethes spp.) in Croatian oilseed rape (Brassica napus L.) crops
Tanja Gotlin Čuljak
; Agronomski fakultet Zagreb, Zavod za poljoprivrednu zoologiju
Siniša Jelovčan
; Syngenta Agro
Dinka Grubišić
; Agronomski fakultet Zagreb, Zavod za poljoprivrednu zoologiju
Ivan Juran
; Agronomski fakultet Zagreb, Zavod za poljoprivrednu zoologiju
Marko Ilić Buljan
; Agronomski fakultet Zagreb, Zavod za poljoprivrednu zoologiju
Abstract
Pollen beetle (Meligethes spp.), as one of the most important oilseed rape pests, damages flower buds while they are completely closed in tight raceme and covered by leaves. Successive sowing of oilseed rape on the same fields or close to last year's fields and sowing on the great areas every year have contributed to the increase of the pollen beetle population. Due to frequent use of pyrethroids for pollen beetle control in the last decade, the resistance of pollen beetle to this group of insecticides was confirmed. Adult forms of pollen beetle were collected from oilseed rape fields in 2007 and 2008 at Zupanja, Komarnica and Kutina. In a laboratory experiment, according to IRAC Susceptibility Test Methods No: 011 and 025, active ingredient lambda - cyhalothrin as standard test and alpha - cypermethrin and chlorpyrifos methyl as alternative active ingredients were used. Results show that all of three tested Croatian populations of pollen beetle are moderately resistant to resistant to the pyrethroid lambda-cyhalothrin and partly resistant to the pyrethroid alpha¬cypermethrin.
Keywords
resistance; pyrethroids; pollen beetle; oilseed rape
Hrčak ID:
169027
URI
Publication date:
1.9.2013.
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