Učinkovitost genotipova i insekticida za tretiranje sjemena u suzbijanju štetnika šećerne repe

master's thesis

• Title (english): Effectiveness of genotypes and seed treatment insecticides in control of sugar beet pests
• Author: Domagoj Vučemilović-Jurić
• Mentor: Darija Lemić (mentor)
• Committee member: Darija Lemić (predsjednik povjerenstva)
• Committee member: Renata Bažok (član povjerenstva)
• Committee member: Milan Pospišil (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Department of Agricultural Zoology); Zagreb
• Defense date and country: 2023-09-28, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Ovo istraživanje usmjereno je na procjenu učinkovitosti tretiranja sjemena i različitih genotipova šećerne repe u suzbijanju dva značajna štetnika, buhača (Chaetocnema tibialis Illiger 1807) i repine pipe (Bothynoderes punctiventris Germar 1824), u Hrvatskoj. Na području Vukovarsko-srijemske županije, na lokacijama Ovčara i Bogdanovci, provedeni su poljski pokusi u razvojnim fazama šećerne repe od BBCH12 do BBCH31. Pokus je uključivao tri različita genotipa šećerne repe te sljedeće tretmane sjemena: kontrola (bez insekticida), tiametoksam + teflutrin, cijantaniliprol, flupiradifuron i Beauveria bassiana + Metarhizium anisopliae. Istraživanjem je utvrđeno da je genotip s brzim klijanjem pokazao najveću osjetljivost na oštećenja od oba štetnika, dok je genotip sa sporim klijanjem pokazao najmanje oštećenja. Unatoč sjetvi u optimalnom roku, rezultati su pokazali da su genotipovi koje brže klijaju osjetljiviji. Rezultati pokazuju da su tretmani tiametoksamom + teflutrinom bili visoko učinkoviti samo u ublažavanju štete od štetnika tijekom kritičnih razvojnih faza. Trenutno istraživanje sugerira da su brojne alternative, od kojih neke pokazuju obećavajuće rezultate učinkovitosti, već formulirane. Međutim, mnoge od ovih alternativa mogu pružiti bitnu, ali potencijalno nedovoljnu zaštitu kada se koriste same. Stoga bi se buduće strategije mogle temeljiti na njihovoj kombiniranoj integraciji unutar okvira integrirane zaštite bilja od štetnika da bi se postigla značajna zaštita šećerne repe. Trebalo bi provesti eksperimentalne pokuse kojima se istražuju potencijalni aditivni ili sinergijski učinci kako bi se ti pristupi dalje unaprijedili.

Abstract (english)

This research is aimed at assessing the effectiveness of seed treatment and different genotypes of sugar beet in the control of two significant pests, the beet flea beetle (Chaetocnema tibialis Illiger 1807) and the sugar beet weevil (Bothynoderes punctiventris Germar 1824), in Croatia. Field experiments were conducted in the Vukovar-Syrmia County, specifically at the Ovčara and Bogdanovci locations, during the developmental stages of sugar beet from BBCH12 to BBCH31. The experiment included three different sugar beet genotypes and the following seed treatments: control (without insecticides), thiamethoxam + tau-fluvalinate, cyantraniliprole, teflutrin, and Beauveria bassiana + Metarhizium anisopliae. The research found that the genotype with rapid germination showed the highest susceptibility to damage from both pests, while the genotype with slow germination exhibited the least damage. Despite planting within the optimal timeframe, the results indicated that genotypes with faster germination were more vulnerable. The results demonstrate that treatments with thiamethoxam + teflutrin were highly effective only in mitigating pest damage during critical developmental stages. Current research suggests that numerous alternatives, some of which show promising effectiveness, have already been formulated. However, many of these alternatives may provide significant but potentially insufficient protection when used individually. Therefore, future strategies may be based on their combined integration within the framework of integrated pest management to achieve significant sugar beet protection. Experimental trials should be conducted to explore potential additive or synergistic effects to further enhance these approaches.

• Keywords: šećerna repa; repina pipa; repin buhač; insekticidi
• Keywords (english): sugar beet; beet flea beetle; sugar beet weevil; insecticides
• Language: croatian
• URN:NBN: urn:nbn:hr:204:691359
• 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: Open access
• Created on: 2023-10-12 12:36:28