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master's thesis
Utvrđivanje rezistentnosti ambrozije (Ambrosia artemisiifolia L.) na herbicid tifensulfuron
Zagreb: University of Zagreb, Faculty of Agriculture, 2021. urn:nbn:hr:204:594478
Grgić, Tatjana
University of Zagreb
Faculty of Agriculture
Department of Herbology

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Grgić, T. (2021). Utvrđivanje rezistentnosti ambrozije (Ambrosia artemisiifolia L.) na herbicid tifensulfuron (Master's thesis). Retrieved from https://urn.nsk.hr/urn:nbn:hr:204:594478

Grgić, Tatjana. "Utvrđivanje rezistentnosti ambrozije (Ambrosia artemisiifolia L.) na herbicid tifensulfuron." Master's thesis, University of Zagreb, Faculty of Agriculture, 2021. https://urn.nsk.hr/urn:nbn:hr:204:594478

Grgić, Tatjana. "Utvrđivanje rezistentnosti ambrozije (Ambrosia artemisiifolia L.) na herbicid tifensulfuron." Master's thesis, University of Zagreb, Faculty of Agriculture, 2021. https://urn.nsk.hr/urn:nbn:hr:204:594478

Grgić, T. (2021). 'Utvrđivanje rezistentnosti ambrozije (Ambrosia artemisiifolia L.) na herbicid tifensulfuron', Master's thesis, University of Zagreb, Faculty of Agriculture, accessed 22 March 2023, https://urn.nsk.hr/urn:nbn:hr:204:594478

Grgić T. Utvrđivanje rezistentnosti ambrozije (Ambrosia artemisiifolia L.) na herbicid tifensulfuron [Master's thesis]. Zagreb: University of Zagreb, Faculty of Agriculture; 2021 [cited 2023 March 22] Available at: https://urn.nsk.hr/urn:nbn:hr:204:594478

T. Grgić, "Utvrđivanje rezistentnosti ambrozije (Ambrosia artemisiifolia L.) na herbicid tifensulfuron", Master's thesis, University of Zagreb, Faculty of Agriculture, Zagreb, 2021. Available at: https://urn.nsk.hr/urn:nbn:hr:204:594478

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Metadata
TitleUtvrđivanje rezistentnosti ambrozije (Ambrosia artemisiifolia L.) na herbicid tifensulfuron
Title (english)Determination of the common ragweed (Ambrosia artemisiifolia L.) resistance to the herbicide thifensulfuron
AuthorTatjana Grgić
MentorMaja Šćepanović (mentor)
Committee memberMaja Šćepanović (predsjednik povjerenstva)
Committee memberKlara Barić (član povjerenstva)
Committee memberBoris Lazarević (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Agriculture
(Department of Herbology)
Zagreb
Defense date and country2021-09-29, Croatia
Scientific / art field,
discipline and subdiscipline		BIOTECHNICAL SCIENCES
Agronomy
Abstract
Cilj istraživanja bio je utvrditi indeks rezistentnosti ambrozije na herbicid tifensulfuron. Biljke osjetljive (S) i potencijalno rezistentne populacije ambrozije (R) tretirane su s linerano rastućim (0,5 – 64 x) za R i linearno padajućim dozacijama (2x – 1/64 x) tifensulfurona za S populaciju (x = 7,5 g a.t./ha) u BBCH 12-14 ambrozije. Rezultati ukazuju na značajnu razliku između učinka na S i R populacije. Vizualnom ocjenom oštećenja utvrđen je progresivan učinak herbicida na S populaciju kod posljednje ocjene (28 DNT), a kod R degresivan trend. Temeljem podataka o redukciji suhe nadzemne mase tretiranjem s linearno padajućim i rastućim dozama izračunata je dose-response krivulja rasta i procijenjena je doza potrebna za redukciju 50% nadzemne mase (GR50). Za S populaciju ona iznosi 0,25 g, odnosno 171,94 g za R populaciju. Indeks rezistentnosti izračunat je kao omjer između GR50 R i GR50 S populacije koji iznosi 687,76. Rezultati istraživanja potvrđuju rezistentnost ambrozije na herbicid tifensulfuron.
Abstract (english)
The aim of the study was to determine the Common ragweed Ambrosia artemisiifolia L.) resistance index to the herbicide thifensulfuron. Plants of the sensitive (S) and potentially resistant Common ragweed population (R) were treated with linearly growing (0.5-64 x) for R and linearly drop-down doses (2x–1/64 x) of thifensulfuron for the S population (x = 7.5 g a.t./ha) in BBCH 12-14. The results indicate a significant difference in efficiency in the S and R populations. A visual assessment of the damage revealed a progressive effect of herbicides on S population at the last rating (28 DNT) and a degressive trend in R population. Based on dry aboveground mass reduction data, treatment with linearly falling and rising doses calculated the dose-response growth curve and the dose needed to reduce 50% of the above-ground mass (GR50) was estimated: 0.25 g for S and 171,94 g for the R population. The resistant index was calculated as the ratio between GR50 R and GR50 S of the population and is 687,76. The results of the study confirm the resistance of Common ragweed to the herbicide thifensulfuron.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:204:594478
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 conditionsOpen access
Terms of useLicence In copyright icon
RepositoryRepository Faculty of Agriculture University of Zagreb
Created on2021-12-20 12:35:06

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