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Deficit irrigation strategies in grapevine (Vitis vinifera L): ecophysioloic responses, growth-yield balance, canopy and cluster microclimate for improving quality under Mediterranean climate

Parreira Cortez Fernandes de Oliveira, Ana Sofia (2012) Deficit irrigation strategies in grapevine (Vitis vinifera L): ecophysioloic responses, growth-yield balance, canopy and cluster microclimate for improving quality under Mediterranean climate. Doctoral Thesis.

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Abstract

The main objective of this study was to analyse, in Mediterranean climate areas, the effects of drip-irrigation strategies on field-grown grapevine ecophysiology, vegetative growth and yield, as well as on canopy and cluster microclimate, to improve quality without compromising productivity or vine life-time. Three irrigation trials were established: the first during 2008-2009, in a ‘Cannonau’ vineyard of Nurra wine region (Alghero, North-Western Sardinia); the second was conducted in 2009-2010, in a ‘Vermentino’ vineyard of Parteolla wine region (Serdiana, South Sardinia); the third trial was established in 2011 in a ‘Vermentino’ vineyard of Nurra wine region. Full (FI), classic deficit (DI) and partial root-zone drying (PRD) irrigation strategies were set after fruit-set until harvest. Two irrigation scheduling methods were tested. The first was based on maximum evapotranspiration estimation (ETm) and replenishment of ETm fractions, using DI or PRD strategies. In ‘Cannonau’ trial, four treatments were set: FI100, DI50, DI25 (supplying 100%, 50% and 25% of ETm) and PRD (50% ETm to one side of the root system, allowing the other side to dry, alternating the watered side every 15 days); in ‘Vermentino’ Parteolla trial the treatments were: DI80, DI40, PRD80, PRD40. In Vermentino’ Nurra trial, irrigation was set according to stem water potential. Four irrigation treatments were tested: early deficit (ED), late deficit (LD), irrigated control (IC) and non irrigated control (NC).

Item Type:Doctoral Thesis
ID Code:6760
Contributors:Nieddu, Giovanni
Publisher:Università degli studi di Sassari
Uncontrolled Keywords:Grapevine, deficit irrigation, vegetative growth modelling, microclimate, berry composition
Subjects:Area 07 - Scienze agrarie e veterinarie > AGR/03 Arboricoltura generale e coltivazioni arboree
Divisions:001 Università di Sassari > 01 Dipartimenti > Scienze zootecniche
Cicli, scuole e corsi:Ciclo 23 > Scuole > Scienze dei sistemi agrari e forestali e delle produzioni alimentari > Agrometeorologia ed ecofisiologia dei sistemi agrari e forestali
Deposited On:27 Mar 2012 18:07

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