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Results of studies on the efficacy of selected insecticides against Strobilomyia lariciola (Karl) in seed orchard of Larix decidua Mill. in the Brzeziny Forest District (Forest Region of Łódź) during 2001-2002 are presented. Chemical treatments were carried out using the ground spraying equipment, and the water emulsions of the following preparations were applied; Karate 025 EC 0,3%, Bi-58 Nowy 1%,...
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