The quantitative changes of ground beetles (Col., Carabidae) in Bt and conventional maize crop in Southern Poland
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Wrocław University of Environmental and Life Sciences Department of Plant Protection, Pl. Grunwaldzki 24a, 50-363 Wrocław, Poland
Institute of Plant Protection – National Research Institute, Regional Experimental Station, Langiewicza 28, 35-101 Rzeszów, Poland
Warsaw University of Life Sciences Department of Applied Entomology, Nowoursynowska 159, 02-776 Warszawa, Poland
Plant Breeding and Acclimatization Institute – National Research Institute, Radzików GMO Controlling Laboratory, 05-870 Błonie, Poland
Jacek P. Twardowski
Wrocław University of Environmental and Life Sciences Department of Plant Protection, Pl. Grunwaldzki 24a, 50-363 Wrocław, Poland
Submission date: 2012-04-27
Acceptance date: 2012-08-16
Journal of Plant Protection Research 2012;52(4):404–409
In the southern part of Poland, ground beetle fauna was studied in the first large-scale Bt maize experiment. The aim of this study was to determine the long term impact of the Bt maize cultivar in comparison to conventional plants, on selected non-target arthropods. The DKC 3421 YG cultivar (Bt maize) and the respective isogenic non-Bt varieties (DKC 3420) were cultivated at two locations: (a) Budziszów near Wrocław and in Głuchów near Rzeszów in the south-eastern region of Poland, in the 2008–2010 growing seasons. For comparative analysis, two additional non-Bt cultivars sprayed with a lambda-cyhalotrine insecticide were also included. To monitor population density of surface-active invertebrates of the Carabidae family, eighty pitfall traps were used at each location. The average number of ground beetle populations in the Bt-maize cultivar DKC 3421 YG did not significantly differ from the number of beetles in the conventional ones. Significant differences between the number of beetles occurred on individual dates only. Usually, these differences related to the considerably smaller total number of beetles in the whole replication. Probably, the variation in the number of beetles was caused by climatic factors or the terrain layout, therefore it cannot be related to the cultivar effect.
The authors have declared that no conflict of interests exist.
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