Utjecaj djelomične defolijacije na odvijanje fenofaza, prinos i kakvoću grožđa sorata Merlot i Cabernet sauvignon

master's thesis

• Title (english): The effect of partial defoliation on development of phenophases yield per vine and grape quality of vitis vinifera L. cv. Cabernet sauvignon and Merlot
• Author: Hrvoje Vlašić
• Mentor: Marko Karoglan (mentor)
• Committee member: Marko Karoglan (predsjednik povjerenstva)
• Committee member: Bernard Kozina (član povjerenstva)
• Committee member: Ana Jeromel (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Viticulture and Enology); Zagreb
• Defense date and country: 2017-06-27, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy; Viticulture and Enology

Abstract

Defolijacija je jedan od zahvata zelene rezidbe. To je postupak prorjeđivanja ili potpunog uklanjanja listova u zoni grožđa. Defolijacijom se postiže bolja prozračnost trsa, djelotvornija zaštita od sive pljesni, bolje osvjetljenje grozdova i bolje dozrijevanje grožđa.
Cilj ovog istraživanja bio je utvrditi kako djelomična defolijacija utječe na odvijanje fenofaza, prinos i kakvoću grožđa sorata Merlot i Cabernet Sauvignon. Pokus je postavljen 2016. Godine na vinogradarsko-vinarskom pokušalištu Agronomskog fakulteta “Jazbina“. Temeljem promatranih i mjerenih rezultata došlo se do zaključka da djelomična defolijacija nije utjecala na odvijanje fenofaza. Djelomična defolijacija u šari kod sorte Merlot pozitivno je utjecala na kakvoću grožđa i na prinos. Djelomična defolijacija u fazi zatvaranja grozdova kod sorte Cabernet Sauvignon utjecala je na smanjenje prinosa, ali porast kvalitete grožđa.

Abstract (english)

Defoliation is one of the procedures of green treatment. It is a process of thinning or complete removal of leaves in the grape area. Defoliation results in better canopy ariness, more effective protection of grey mold, better grape lighting and better ripening of grapes.
The goal of this research was to determine how partial defoliation affects the development of phenophases, quantity and quality of the grapes from the Merlot and Cabernet Sauvignon varieties. The experiment was conduced at Jazbina experimental filed in 2016. Partial defoliation at any stage had no influence on phenophases development. Partial defoliation in veraison increased grape quality and quqntity of Merlot. Partial defoliation in berry set of Cabernet sauvignon decreased quantity, but increased quality of grapes.

• Keywords: djelomična defolijacija; fenofaze; kakvoća grožđa; prinos; Merlot; Cabernet Sauvignon
• Keywords (english): Partial defoliation; phenophases; grape quality; yield; Merlot; Cabernet Sauvignon
• Language: croatian
• URN:NBN: urn:nbn:hr:204:673720
• 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: Access restricted to students and staff of home institution
• Created on: 2017-07-26 09:50:46