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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Rezistence blýskáčka řepkového (Meligethes aeneus, Fabr. 1775) k vybraným účinným látkám insekticidů
 Grätzová, Linda
The aim of this thesis was to determine presence of resistant populations pollen beetle (Brassicogethes aeneus). Determination their resistance level and proposing an anti-resistant strategy was solved too. The adults of pollen beetle were collected in year 2012 and 2013 from 16 locations in South Moravia. Collections were done on rape, but also on poppy and mustard. Pyrethroids - cypermethrin, lambda-cyhalotrin, tau-fluvalinate; neonicotinoids -- commercially used preparation Biscaya 240 OD and organophosphorous insecticide active substance chlorpyrifos ethyl were tested. The tests were conducted according to the methodology of Insecticide Resistance Action Committee (IRAC) number 011, 021, 025. Each active substance was tested in three repetitions. The adults were exposed to 100 % registered dose after 24 hour. Substance efficiency in 2012 and 2013 was different. There was an efficiency drop in Biscaya 240 OD preparation. On the contrary, lambda-cyhalotrine substance was more effective in 2013.
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Význam bóru ve výživě slunečnice roční (Helianthus annuus, L.)
 Grätzová, Linda
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