PRECISION IRRIGATION IN GRAPEVINES: WETTING PATTERN ANALYSIS (WPA ©), A NOVEL SOFTWARE TOOL TO VISUALISE REAL TIME SOIL WETTING PATTERNS.

Sigfredo Fuentes; Carlos Camus; Gordon Rogers,Jann Conroy

Quantitative assessment of spatial and temporal variation of soil moisture close to the root-zone is a critical factor to be considered in irrigation scheduling for Grapevines under RDI (Regulated Deficit Irrigation) and PRD (Partial Root-zone Drying). RDI and PRD manipulate soil wetting patterns (SWP) to modify the physiology of the vine (i.e. reducing stomatal conductance) to obtain desirable increments in water use efficiency and grape quality. A novel software tool is under development, called Wetting Pattern Analyser (WPA©). This software can be used to generate 3D real time animations of SWP, which can be correlated with plant water status to achieve accurate irrigation scheduling strategies for grapevines under RDI and PRD.

Published on 01/12/2005

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