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master's thesis
Rezistentnost krumpirove zlatice na području Bjelovarsko-bilogorske i Virovitičko-podravske županije
Zagreb: University of Zagreb, Faculty of Agriculture, 2019. urn:nbn:hr:204:447506
Štefović, Lorena
University of Zagreb
Faculty of Agriculture
Agricultural Zoology

Institutional repository: Repository Faculty of Agriculture University of Zagreb

Cite this document

Štefović, L. (2019). Rezistentnost krumpirove zlatice na području Bjelovarsko-bilogorske i Virovitičko-podravske županije (Master's thesis). Zagreb: University of Zagreb, Faculty of Agriculture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:204:447506

Štefović, Lorena. "Rezistentnost krumpirove zlatice na području Bjelovarsko-bilogorske i Virovitičko-podravske županije." Master's thesis, University of Zagreb, Faculty of Agriculture, 2019. https://urn.nsk.hr/urn:nbn:hr:204:447506

Štefović, Lorena. "Rezistentnost krumpirove zlatice na području Bjelovarsko-bilogorske i Virovitičko-podravske županije." Master's thesis, University of Zagreb, Faculty of Agriculture, 2019. https://urn.nsk.hr/urn:nbn:hr:204:447506

Štefović, L. (2019). 'Rezistentnost krumpirove zlatice na području Bjelovarsko-bilogorske i Virovitičko-podravske županije', Master's thesis, University of Zagreb, Faculty of Agriculture, accessed 19 December 2024, https://urn.nsk.hr/urn:nbn:hr:204:447506

Štefović L. Rezistentnost krumpirove zlatice na području Bjelovarsko-bilogorske i Virovitičko-podravske županije [Master's thesis]. Zagreb: University of Zagreb, Faculty of Agriculture; 2019 [cited 2024 December 19] Available at: https://urn.nsk.hr/urn:nbn:hr:204:447506

L. Štefović, "Rezistentnost krumpirove zlatice na području Bjelovarsko-bilogorske i Virovitičko-podravske županije", Master's thesis, University of Zagreb, Faculty of Agriculture, Zagreb, 2019. Available at: https://urn.nsk.hr/urn:nbn:hr:204:447506

Metadata
TitleRezistentnost krumpirove zlatice na području Bjelovarsko-bilogorske i Virovitičko-podravske županije
Title (english)Resistance of colorado potato beetle in the Bjelovar-Bilogora and Virovitica-Podravina County
AuthorLorena Štefović
MentorMaja Čačija (mentor)
Committee memberMaja Čačija (predsjednik povjerenstva)
Committee memberRenata Bažok (član povjerenstva)
Committee memberDarija Lemić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Agriculture
(Agricultural Zoology)
Zagreb
Defense date and country2019-09-30, Croatia
Scientific / art field,
discipline and subdiscipline		BIOTECHNICAL SCIENCES
Agronomy
Abstract
Širom svijeta krumpirova zlatica je najvažniji štetnik krumpira. Smatra se štetnikom kojeg je vrlo teško kontrolirati i suzbiti zbog njezine izvanredne sposobnosti razvijanja rezistentnosti, postupnog porasta otpornosti na gotova sva kemijska sredstva koja su ikada korištena u njezinu suzbijanju. Razlog pojave rezistentnosti je najčešće prečesta primjena insekticida istog mehanizma djelovanja. Zbog sve manje informacija o trenutnoj situaciji s razvojem rezistentnosti i činjenicom da je u Hrvatskoj postalo otežano suzbijanje zlatice na nekim područjima, potrebno je provoditi istraživanja kako bi se ispitao ovaj problem. Cilj ovog rada bio je utvrditi učinkovitost pet djelatnih tvari na mortalitet ličinki krumpirove zlatice prikupljenih u Bjelovarsko-bilogorskoj i Virovitičko-podravskoj županiji na područjima intenzivnog uzgoja krumpira. U laboratorijskim testovima utvrđena je učinkovitost četiri različite doze pripravaka na osnovi djelatnih tvari klorpirifosa, cipermetrina, tiakloprida i spinosada nakon 48 sati te metaflumizona nakon 72 sata. Populacije su klasificirane u pet kategorija temeljem učinkovitosti preporučene doze pripravka. Na klorpirifos četiri populacije su bile rezistentne, a jedna visoko rezistentna. Cipermetrin je bio učinkovit samo na dvije lokacije unutar Virovitičko-podravske županije, dok je kod ostale tri populacije utvrđena rezistentnost. Neonikotinoid tiakloprid je bio učinkovit na populacije s tri lokacije, no u svakoj županiji utvrđene su i populacije rezistentne na ovaj insekticid. Metaflumizon i spinosad su se pokazali kao vrlo učinkoviti insekticidi za suzbijanje zlatica s istraživanih područja, te je samo kod jedne populacije unutar Bjelovarsko-bilogorske županije utvrđena rezistentnost na spinosad. Rezultati ovog istraživanja ukazuju da je krumpirova zlatica i dalje rezistentna na organofosforne insekticide i piretroide, kao što je bilo dokazano i prije 30-ak godina te se stanje s rezistentnosti nije promijenilo. Također, neke populacije postale su rezistentne i na noviju djelatnu tvar tiakloprid, što ukazuje da zlatica ima sposobnost brzog razvoja rezistentnosti. To u budućnosti može dovesti do proširenja rezistentnosti na druge insekticide iz skupine neonikotinoida, ali i na druga područja ukoliko se budu intenzivno primjenjivali.
Abstract (english)
The Colorado Potato Beetle (CPB) is the most important potato pest, which is very difficult to control because of its extraordinary ability to develop resistance. This happened to almost all chemical agents ever used in its control. The most often reason for resistance development is frequent application of insecticides with the same mode of action. Due to the lack of information on the current situation on resistance, and the fact that in Croatia it has become more difficult to suppress CPB in some areas, more new research is needed to examine this problem. The aim of this study was to determine the efficacy of five active substances on the mortality of CPB larvae collected in Bjelovar-Bilogora and Virovitica-Podravina counties, in areas of intensive potato cultivation. In laboratory tests, the efficacy of four different doses of chlorpyrifos, cypermethrin, thiacloprid and spinosad active substances was determined after 48 hours and metaflumizone after 72 hours. Populations were classified into five categories based on the efficacy of the recommended dose of the preparation. Four populations were resistant to chlorpyrifos and one was highly resistant. Cypermethrin was effective in only two locations within Virovitica-Podravina county, while resistance was found in the other three locations. The neonicotinoid thiacloprid was effective in populations from three locations. However, one population in each county was found to be resistant to this insecticide. Metaflumizone and spinosad have proven to be very effective insecticides for the control of CPB from the study areas, and only one population within the Bjelovar-Bilogora County was found to be resistant to spinosad. The results of this study indicate that CPBs are still resistant to organophosphorus insecticides (chlorpyrifos) and pyrethroids (cypermethrin), as was demonstrated 30 years ago, and the resistance status has not changed. Also, some populations have become more resistant to the newer substance thiacloprid, indicating that CPB has the ability to rapidly develop resistance. In the future, this may lead to the extension of resistance to other insecticides from the neonicotinoid group, but also to other areas if intensively applied.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:204:447506
Study programmeTitle: Phytomedicine
Study programme type: university
Study level: graduate
Academic / professional title: magistar/ magistra inženjer/inženjerka fitomedicine (magistar/ magistra inženjer/inženjerka fitomedicine)
Type of resourceText
File originBorn digital
Access conditionsAccess restricted to students and staff of home institution
Terms of useLicence In copyright icon
Created on2019-11-22 13:51:47