Selektivni učinak kombinacije vanilične kiseline i reducirane doze mezotriona prema kukuruzu

undergraduate thesis

• Title (english): Selective effect of the combination of vanillic acid and reduced dose od mesotrione on corn
• Author: Petra Gregurić
• Mentor: Maja Šćepanović (mentor)
• Committee member: Maja Šćepanović (predsjednik povjerenstva)
• Committee member: Klara Barić (član povjerenstva)
• Committee member: Valentina Šoštarčić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Herbology); Zagreb
• Defense date and country: 2023-09-18, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Kukuruz je najčešće uzgajana ratarska kultura u Republici Hrvatskoj u kojoj su korovi glavni
uzrok gubitka prinosa. Danas se korovne vrste u kukuruzu primarno suzbijaju primjenom
herbicida. No, obzirom na strategiju Europske komisije „Europski zeleni plan“, čiji je cilj 50%tno
smanjenje primjene svih pesticida do 2030. godine, potrebno je istražiti druge opcije
suzbijanja poljoprivrednih štetnika. U dosadašnjim istraživanjima fenolne kiseline su se
pokazale kao potencijalna alternativa čistim herbicidima, a posebice vanilična, p-kumarična i
ferulična kiselina, za koje je utvrđen inhibitoran učinak na rast i rani razvoj ambrozije, najčešće
širokolisne korovne vrste u kukuruzu. Obzirom da primjenom fenolnih kiselina samostalno nije
moguće postići zadovoljavajući inhibitorni učinak na korovnu vrstu potrebno je istražiti njihovu
primjenu istovremeno s reduciranim dozama herbicida. Stoga, cilj ovog istraživanja je utvrditi
selektivan učinak vanilinče kiseline u kombinaciji s različitim reduciranim dozama herbicida
mezotriona. U laboratoriju, u in vitro uvjetima, sjeme kukuruza je tretirano čistom
reduciranom dozom herbicida mezotriona te kombinacijama linearno padajućih doza
herbicida s vaniličnom kiselinom te je potom utvrđena klijavost te duljina radikule i koletoptile
te suha masa klijanaca kukuruza. Rezultati istraživanja ukazuju da je u in vitro uvjetima kukuruz
selektivan prema svim primijenjenim dozama herbicida u kombinaciji s vaniličnom kiselinom.
Kod svih mjerenih parametara kukuruza nije utvrđena veća inhibicija kod primjene
kombinacije herbicida i vanilinče kiseline u odnosu na samostalnu primjenu herbicida.

Abstract (english)

Maize is the most commonly grown field crop in the Republic of Croatia, where weeds are the
main cause of yield loss. Today, weed species in maize are controlled mainly by the use of
herbicides. However, considering the European Commission's "European Green Deal
strategy," which aims to reduce the use of all pesticides by 50% by 2030, it is necessary to
explore other ways to control agricultural pests. In previous research, phenolic acids have
shown their potential as an alternative to pure herbicides, particularly vanillic, p-coumaric and
ferulic acids, which inhibit the growth and early development of Ambrosia artemisiifolia, the
most common broadleaf weed in maize. Since it is not possible to obtain a satisfactory
inhibitory effect on weed species with phenolic acids alone, it is necessary to study their
application simultaneously with reduced doses of herbicides. Therefore, the objective of this
study is to determine the selective effect of vanillic acid in combination with various reduced
doses of the herbicide mesotrione. In the laboratory, maize seeds were treated under in vitro
conditions with a reduced dose of mesotrione and combinations of linearly decreasing doses
of herbicide containing the phenolic compound vanillic acid. Subsequently, germination,
radicle and coleoptile length, and dry weight of maize seedlings were determined. The
research results show that maize is selective to all applied herbicide doses in combination with
vanillic acid under in vitro conditions. For all measured parameters, no greater inhibition was
observed when the combination of herbicide and vanillic acid was applied compared to when
the herbicide was applied independently.

• Keywords: fenolne kiseline; reducirane doze herbicida; alelopatija; Zea mays
• Keywords (english): phenolic acids; reduced herbicide doses; allelopathy; Zea mays
• Language: croatian
• URN:NBN: urn:nbn:hr:204:376366
• Study programme: Title: Plant Protection; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka zaštite bilja (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka zaštite bilja)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2024-09-26 08:51:54