Učinak herbicida iz kemijske skupine triketona

master's thesis

• Author: Mirna Petrović
• Mentor: Klara Barić (mentor)
• Committee member: Klara Barić (predsjednik povjerenstva)
• Committee member: Dubravka Dujmović Purgar (član povjerenstva)
• Committee member: Maja Šćepanović (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Herbology); Zagreb
• Defense date and country: 2016-09-30, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Kukuruz je najveća poljoprivredna kultura u Hrvatskoj. Važan ograničavajući činitelj uspješne proizvodnje predstavljaju korovi. Korovi svojim prisustvom redovito nanose velike štete kukuruzu zbog čega je primjena herbicida redovita mjera u tehnologiji uzgoja. Značajnu skupinu herbicida registriranu za primjenu u kukuruzu predstavljaju inhibitori biosinteze karotenoida. U Hrvatskoj su iz ove skupine registrirani herbicidi mezotrion i tembotrion. Herbicid topramezon još nije registriran za primjenu, međutim njegova široka namjena u suzbijanju jednogodišnjih širokolisnih korova u kukuruzu prezentira ga kao potencijalno dobru zamjenu danas zabranjenim herbicidnim djelatnim tvarima. Cilj ovog istraživanja provedenog na pokušalištu Agronomskog fakulteta Šašinovečki Lug bio je utvrditi i usporediti učinak herbicida mezotriona, tembotriona i topramezona, primijenjenih u preporučenoj i dvostruko većoj dozi u usjevu kukuruza. Svi tretmani su primijenjeni u post-emergence roku. Ocjena učinka tretmana utvrđena je vizualnom ocjenom oštećenja (0 – 100%) i utvrđivanjem broja jedinki i svježe nadzemne mase korova. Rezultati istraživanja ukazuju da su mezotrion i topramezon u obje primijenjene doze zadovoljavajuće reducirali broj jedinki i nadzemnu masu jednogodišnjih širokolisnih vrsta (Chenopodium album, Polygonum persicaria, Ambrosia artemisiifoli i Amaranthus retroflexus). Učinak na redukciju broja (94,4% i 100%) i nadzemene mase uskolisne korovne vrste Echinochloa crus-galli (99,2% i 100%) bio je zadovoljavajući samo primjenom herbicida topramezon i to u obje istraživane dozacije. Mezotrion i tembotrion ni u jednoj primijenjenoj dozi nisu zadovoljavajuće reducirali broj i masu koštana.

Abstract (english)

Corn is the largest crop in Croatia. An important limiting factor of production are weeds. Weeds his presence regularly inflict great damage to corn, which is why the application of herbicides regular measures in breeding technology. A significant group of herbicides registered for use in corn are carotenoid biosynthesis inhibitors. In Croatia, in this group registered herbicides mesotrione and tembotrione. The herbicide topramezone is not yet registered for use, but its broad purpose of the control of annual broadleaf weeds in corn presents it as potentially a good exchange today prohibited herbicidal active substances. The aim of the research conducted at the Faculty of Agriculture experimental Šašinovečki Lug was to determine and compare the effect of the herbicide mesotrione, tembotrione and topramezone, applied at the recommended dose and twice that in the crop of corn. All treatments were applied in post-emergence period of time. Impact assessment of treatment was determined by visual assessment of damage (0-100%) and determine the number of animals and fresh aboveground mass of weeds. The research results indicate that mesotrione and topramezone in both the administered dose satisfactorily reduce the number of individuals and aboveground mass of annual broadleaf species (Chenopodium album, Polygonum persicaria, Ambrosia artemisiifoli and Amaranthus). The effect of the reduction of (94.4% and 100%) and narrow-leaved weed nadzemene weight of Echinochloa crus-galli (99.2% and 100%) was satisfactory just applying herbicide topramezone and the dosage of both examined. Mesotrione and tembotrione in any of the applied dose not satisfactorily reduce the number and mass of bone.

• Keywords: kukuruz; inhibitori biosinteze karotenoida; mezotrion; tembotrion; topramezon
• Keywords (english): corn; carotenoid biosynthesis inhibitors; mesotrione; tembotrione; topramezone
• Language: croatian
• URN:NBN: urn:nbn:hr:204:996609
• 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: 2016-12-12 08:24:31