Title Učinak zeo-bio pripravka na latentnu pojavu paunovog oka masline sorte 'oblica' u Zadarskoj županiji Title (english) Effect of zeo–bio preparation on latent peacock eye occurrence in the olive variety 'oblica' in the Zadar county Author Krstina Mišlov Mentor Tomislav Kos (mentor)Committee member Tomislav Kos (predsjednik povjerenstva)Committee member Šime Marcelić (član povjerenstva)Committee member Joško Kaliterna (član povjerenstva)Granter University of Zagreb Defense date and country 2025-02-27, Croatia Scientific / art field, BIOTECHNICAL SCIENCES Abstract Paunovo oko (Venturia oleaginea (Castagne) Rossman & Crous, najčešća je gospodarski važna bolest masline koja izaziva velike štete i narušava kvalitetu i prinos maslinovog ulja. U današnje vrijeme klimatskih promjena veliki je pritisak paunovog oka u maslinicima, a dosad najčešće korišteno sredstva za zaštitu masline od te bolesti su sredstva na bazi bakra. Unatoč svojim pozitivnim stranama i širokom spektru djelovanja protiv patogena nužno je traženje alternativnih sredstava u suzbijanju paunovog oka zbog činjenice da se bakar dugotrajnim korištenjem nakuplja u tlu i vodi te tako onečišćuje okoliš. Potencijal u zamjeni komercijalnih sredstava na bazi bakra pokazali su zeoliti – minerali koji se pojavljuju u nemetamorfoznim sedimentnim stijenama. Ovaj rad temelji se na istraživanju provedenom u sklopu projekta 'LIFE' Microfighter“. Cilj mu je istražiti utjecaj smanjenja doze bakra na latentnu zarazu paunovim okom. U tu svrhu provedena su poljska i laboratorijska mjerenja. Istraživanje je provedeno u laboratoriju Sveučilišta u Zadru, a uzorci lista skupljeni su u mjestu Škabrnja pokraj Zadra, na postavljenom poljskom pokusu u masliniku starom 17 godina gdje se redovito provodi integrirana zaštita bilja. Poljski pokus je postavljen po shemi slučajnog bloknog rasporeda s četiri varijante u četiri ponavljanja. Sredstvo na bazi bakra, korišteno za tretiranje paunovog oka u masliniku, bilo je Nordox 75 WG, a drugo sredstvo koje je istraživano kao alternativa proizvodima na bazi bakra je prirodni i okolišno održivi „zeo–bio pripravak“. Ovaj naziv se koristi u projektu kao sinonim za proizvod koji će se pojaviti na tržištu kao tvar za ojačavanje bilja. Proizvod je sastavljen od dvije komponente, zeolitne (K-kabazita) i mikrobiološke (bakterije, (mBCA), Pseudomonas sp. soj DLS65)). Tijekom vegetacijskog razdoblja u 2023. godini provedena su dva tretmana maslina te dvije procjene pojave paunovog oka. Utvrđena je latentna zaraza paunovim okom. Rezultati broja zaraženih listova i zaražene lisne površine su uspoređeni ANOVA-om. Statističkom obradom podataka nije utvrđena značajna razlika među tretmanima pokusa međusobno niti tretmana s aktivnim tvarima u odnosu na kontrolu. Iako su rezultati istraživanja obećavajući, potrebna su daljnja ispitivanja učinkovitosti preparata na bazi zeolita kao sredstva za zaštitu bilja kako bi se proširilo njegovo korištenje te potencijalno zamijenilo dosad korištena sredstva.
Abstract (english) Peacock eye (Venturia oleaginea (Castagne) Rossman & Crous) is the most common economically important disease of the olive tree, causing significant damage and affecting the quality and yield of olive oil. In the context of climate change, there is increasing pressure from peacock eye in olive groves, and the most commonly used plant protection products against this disease are copper-based. Despite their positive aspects and broad spectrum of action against pathogens, there is a necessity to search for alternative treatments to control peacock eye due to the fact that copper accumulates in the soil and water with prolonged use, thus polluting the environment. Zeolites – minerals found in non-metamorphic sedimentary rocks – have shown potential as a substitute for copper-based products. This paper is based on research conducted within the 'LIFE' Microfighter project. Its aim is to investigate the effect of reducing copper dosage on latent infection by peacock eye. Field and laboratory measurements were carried out for this purpose. The research was conducted at the University of Zadar laboratory, and leaf samples were collected from the village of Škabrnja near Zadar, at a 17-year-old olive grove where integrated pest management is regularly practiced. The field trial was set up in a randomized block design with four variants and four replications. The copper-based product used for treating peacock eye in the olive grove was Nordox 75 WG, while the second product investigated as an alternative to copper-based products was a natural and environmentally sustainable "zeo-bio preparation." This name is used in the project as a synonym for the product that will appear on the market as a plant-strengthening substance. The product consists of two components: zeolitic (K-cabazite) and microbiological (bacteria, (mBCA), Pseudomonas sp. strain DLS65). During the 2023 growing season, two olive treatments and two assessments of peacock eye occurrence were carried out. Latent infection by peacock eye was confirmed. The results of the number of infected leaves and infected leaf surface were compared using ANOVA. They showed that zeolite as a carrier of Pseudomonas sp. bacteria has the ability to replace copper since it exhibited the same effect in controlling peacock eye, i.e., the manifestation of latent infection of the leaves. Statistical data analysis did not show any significant differences between the trial treatments or treatments with active substances compared to the control. Although the results of the research are promising, further testing of zeolite effectiveness as a plant protection agent is needed in order to expand its use and potentially replace the currently used products
Keywords
bakar
ekološke mjere zaštite
Olea europaea L.
paunovo oko
zeoliti
Keywords (english)
copper
ecological protection measures
Olea europaea L.
peacock eye
zeolites
Language croatian URN:NBN urn:nbn:hr:204:660953 Study programme Title: Mediterranean Agriculture Type of resource Text File origin Born digital Access conditions Open access Terms of use Created on 2025-03-13 10:26:14
