Determination of the plant area index of olive trees by hemispherical photography

R Gucci, C Cantini, P van Gardingen, L Sharp

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Destructive measurements of leaf area index (LAT) were compared with values of plant area index (PAI) obtained by hemispherical photography in an unevenly-aged olive orchard in Southern Tuscany, Italy. The measured LAI destructively increased from 0.8 in one-year old plants to 2.8 in 10-year-old trees. PAI estimated by using conventional gap fraction analysis of hemispherical photography was 34 and 63% of that determined destructively in one-year-old plants and mature trees respectively. An alternative analysis of the hemispherical images to determine PAI from radiation interception by the canopy gave estimates 30% higher than that obtained by measurements of gap fraction. The radiation interception method was found to be more consistent for calculating LAI than the gap fraction method.

Original languageEnglish
Title of host publicationTHIRD INTERNATIONAL SYMPOSIUM ON OLIVE GROWING, VOL 1
EditorsI Metzidakis
Place of PublicationLEUVEN 1
PublisherINTERNATIONAL SOCIETY HORTICULTURAL SCIENCE
Pages317-319
Number of pages3
ISBN (Print)90-6605-871-4
Publication statusPublished - 1999
Event3rd International Symposium on Olive Growing - KHANIA
Duration: 22 Sep 199726 Sep 1997

Conference

Conference3rd International Symposium on Olive Growing
CityKHANIA
Period22/09/9726/09/97

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