Utjecaj faze rasta mišjeg repka (Alopecurus myosuroides Huds.) na učinak herbicida pinoksadena

master's thesis

• Title (english): Influence of the growth stage of blackgrass (Alopecurus myosuroides Huds) on the effect of the pinoxadene
• Author: Tomica Hadrović
• Mentor: Maja Šćepanović (mentor)
• Committee member: Maja Šćepanović (predsjednik povjerenstva)
• Committee member: Klara Barić (član povjerenstva)
• Committee member: Zlatko Svečnjak (član povjerenstva)
• Committee member: Ana Milanović-Litre (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Herbology); Zagreb
• Defense date and country: 2021-09-29, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Alopecurus myosuroides (mišji repak) jedan je od značajnijih travnih korova usjeva strnih žitarica. Cilj ovog istraživanje je utvrditi utjecaj faza rasta mišjeg repka na učinkovitost herbicida pinoksadena. Pokus je postavljen u uvjetima plastenika i biljke mišjeg repka tretirane su s linearno padajućim dozacijama pinoksadena (80-0.6 g a.t. ha¯¹) u 3 faze rasta: Učinak pinoksadena utvrđen je vizualno ocjenom oštećenja 7, 14 i 21 dan nakon tretiranja (DNT) te redukcijom suhe nadzemne mase mišjeg repka. Rezultati istraživanja ukazuju da faza mišjeg repka značajno utječe na učinkovitost pinoksadena. Doza pinoksadena manja od preporučene (20 g a.t. ha-1) imala je zadovoljavajući učinak (88,6 %) samo na biljke mišjeg repka tretirane u fazi BBCH 12-14. Primjenom preporučene (40 g a.t. ha-1) doze pinoksadena zadovoljavajući učinak (89,1 %) na redukciju suhe biomase utvrđen je do faze rasta BBCH 21-25. Primjena pinoksadena u fazi rasta BBCH 31-32 nije imala zadovoljavajući učinak ni nakon primjene dvostruke (80 g a.t. ha-1) doze.

Abstract (english)

Alopecurus myosuroides (blackgrass) is one of the most significant grass weeds of small grain crops. The aim of this study was to determine the influence of blackgrass growth phases on the efficacy of the herbicide pinoxaden. The experiment was set up in greenhouse conditions and blackgrass plants were treated with linearly decreasing doses of pinoxaden (80-0.6 g a.i. ha¯¹) in 3 growth phases: The effect of pinoxaden was determined visually by assessing damage 7, 14 and 21 days after treatment (DAT) and by reducing the dry aboveground mass of the blackgrass. The results of the study indicate that the blackgrass phase significantly affects the efficacy of pinoxaden. A dose of pinoxaden lower than recommended (20 g a.i. ha-1) had a satisfactory effect (88.6%) only on blackgrass plants treated in phase BBCH 12-14. Using the recommended (40 g a.t. ha-1) dose of pinoxaden, a satisfactory effect (89.1%) on the reduction of dry biomass was determined up to the growth phase of BBCH 21-25. Administration of pinoxaden during the growth phase of BBCH 31-32 did not have a satisfactory effect even after administration of a double (80 g a.i. ha¯1) dose.

• Keywords: mišji repak; razvojna faza; pinoksaden; doza; redukcija suhe biomase
• Keywords (english): blackgrass; growth stage; pinoxaden; dose; reduction of dry biomass
• Language: croatian
• URN:NBN: urn:nbn:hr:204:497423
• Study programme: Title: Phytomedicine; Study programme type: university; Study level: graduate; Academic / professional title: magistar/ magistra inženjer/inženjerka fitomedicine (magistar/ magistra inženjer/inženjerka fitomedicine)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2021-12-03 12:34:47