Utvrđivanje prostorne varijabilnosti vegetativnog i generativnog rasta vinove loze unutar vinograda

master's thesis

• Title (english): Determining the spatial variability of vegetative and generative growth of vines within vineyard
• Author: Šimun Topić
• Mentor: Marko Karoglan (mentor)
• Committee member: Marko Karoglan (predsjednik povjerenstva)
• Committee member: Darko Preiner (član povjerenstva)
• Committee member: Željko Andabaka (član povjerenstva)
• Committee member: Marina Anić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Department of Viticulture and Enology); Zagreb
• Defense date and country: 2020-09-25, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Prostorna varijabilnost vinove loze nije nova pojava, vinogradari su uglavnom svjesni da se
vinova loza razlikuje unutar njihovih vinograda. U ovim se istraživanjima proučavala
prostorna varijabilnost prinosa, bujnosti i kakvoće grožđa u vinogradima zasađenim sortom
Pinot crni u Plešivičkom vinogorju, te vinogradima sorte Kraljevina u Zelinskom vinogorju,
podregije Plešivica i Prigorje-Bilogora u Zapadnoj kontinentalnoj Hrvatskoj. Kemijskom
analizom mošta prema metodama OIV-a dobiveni su parametri kakvoće grožđa, sadržaj
šećera i ukupnih kiselina te sadržaj dušika u suhoj tvari lista. Pomoću Ravazovog indeksa
mjerena je ravnoteža između generativnog i vegetativnog potencijala vinove loze. Rezultati
ovih istraživanja ukazuju na veliku prostornu varijabilnost u prinosu i bujnosti vinove loze,
dok je varijabilnost nešto manja za parametre kakvoće grožđa. Prema dobivenim
vrijednostima za Ravazov indeks više od polovice promatranih trsova pokazalo je znakove
neravnoteže, odnosno znakove pretjerano visoke ili slabe bujnosti. Koncentracija šećera i
ukupnih kiselina značajno je varirala u uzorcima mošta iz vinograda Kraljevine, a u
vinogradima Pinota crnog nešto manje, dok je pH vrijednost bila relativno stabilna u
uzorcima mošta iz svih vinograda.

Abstract (english)

Spatial variability of vineyards is not a new phenomenon, winegrowers are generally aware
that vines differ within their vineyards. In these studies, the spatial variability of yield,
vegetative growth and quality of grapes was observed in vineyards planted with Pinot Noir in
winegrowing subregion Plešivica, and Kraljevina in winegrowing subregion Prigorje-Bilogora.
Chemical analysis of must according to OIV methods showed grape quality parameters,
sugar and titratable acid content, and nitrogen content in leaf dry matter. The balance
between the generative and vegetative potential of the vine was measured using the Ravaz
index. The results of the research indicate a large spatial variability in the yield and
vegetative growth of the vine, while the variability is somewhat lower for the quality
parameters of grapes. According to the obtained values for the Ravaz index, more than half
of the observed vines showed signs of imbalance, ie signs of excessively high or low vigour.
The concentration of sugars and total acids varied significantly in the samples of must from
the vineyards of Kraljevina, and in the vineyards of Pinot Noir slightly less, while the pH value
was relatively stable in the samples of must from all vineyards.

• Keywords: Prostorna varijabilnost; generativni potencijal; vegetativni potencijal; prinos; bujnost; kakvoća grožđa
• Keywords (english): Spatial variability; generative potential; vegetative potential; yield; vigour; grape quality
• Language: croatian
• URN:NBN: urn:nbn:hr:204:099487
• Study programme: Title: Horticulture; Study programme type: university; Study level: graduate; Academic / professional title: magistar/ magistra inženjer/inženjerka hortikulture (magistar/ magistra inženjer/inženjerka hortikulture)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2020-10-15 06:15:33