Quantifying spatio-temporal variation of leaf chlorophyll and nitrogen contents in vineyards

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dc.contributor.author Rey-Carames, Clara
dc.contributor.author Tardaguila, Javier
dc.contributor.author Sanz-Garcia, Andres
dc.contributor.author Chica-Olmo, Mario
dc.contributor.author Diago, Maria P.
dc.date.accessioned 2017-01-08T15:02:05Z
dc.date.available 2017-01-08T15:02:05Z
dc.date.issued 2016-10
dc.identifier.citation Rey-Carames , C , Tardaguila , J , Sanz-Garcia , A , Chica-Olmo , M & Diago , M P 2016 , ' Quantifying spatio-temporal variation of leaf chlorophyll and nitrogen contents in vineyards ' , Biosystems Engineering , vol. 150 , pp. 201-213 . https://doi.org/10.1016/j.biosystemseng.2016.07.015
dc.identifier.other PURE: 70928900
dc.identifier.other PURE UUID: 7e34a5ee-d20e-4ac1-931b-7a5a8716e771
dc.identifier.other WOS: 000384855800018
dc.identifier.other Scopus: 84983526954
dc.identifier.other ORCID: /0000-0003-0413-4965/work/30150253
dc.identifier.uri http://hdl.handle.net/10138/173054
dc.description.abstract Precision viticulture requires the characterisation of the spatio-temporal variability of the vineyard status to design the appropriate management for each area. The goal of this work was to characterise the spatio-temporal variability of leaf chlorophyll (Chl) and nitrogen (N) content and their relationship with the vegetative growth in a three ha commercial vineyard (Vitis vinifera L.) using a geostatistical approach. Leaf Chl and N contents were assessed by two fluorescence indices provided by a hand-held fluorescence sensor. Fluorescence measurements were taken along five dates, from veraison to harvest, on 72 sampling points delineated on a regular grid across the vineyard. Shoot pruning weight (SPW) was measured for each sampling point as indicator of the grapevine vegetative growth. Geostatistical analysis was applied to model the spatial variability of leaf Chl and N content and SPW. The spread showed an increase of the variability of leaf Chl and N content during the ripening period, reaching maximum values prior to harvest. The variograms illustrated a similarity of the spatial variability structure of leaf Chl at all timings, unlike N which showed changing spatial variability structures along the ripening period. The Kappa index evidenced a slight intra-season stability for both Chl and N and showed that N could not be used alone as an indicator to delineate vigour management areas. The existence of spatio-temporal variability of key vegetative components was proved and its knowledge is crucial to implement precision viticulture approach such as variable rate application of fertilizers or water as needed. (C) 2016 IAgrE. Published by Elsevier Ltd. All rights reserved. en
dc.format.extent 13
dc.language.iso eng
dc.relation.ispartof Biosystems Engineering
dc.rights unspecified
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject Proximal sensing
dc.subject Plant phenotyping
dc.subject Vegetative growth
dc.subject Geostatistical analysis
dc.subject Grapevine
dc.subject Chlorophyll fluorescence
dc.subject VITIS-VINIFERA L.
dc.subject TERROIR
dc.subject SOIL
dc.subject GRAPEVINES
dc.subject QUALITY
dc.subject GROWTH
dc.subject ENVIRONMENT
dc.subject VITICULTURE
dc.subject 1183 Plant biology, microbiology, virology
dc.title Quantifying spatio-temporal variation of leaf chlorophyll and nitrogen contents in vineyards en
dc.type Article
dc.contributor.organization Faculty of Pharmacy
dc.contributor.organization Division of Pharmaceutical Biosciences
dc.description.reviewstatus Peer reviewed
dc.relation.doi https://doi.org/10.1016/j.biosystemseng.2016.07.015
dc.relation.issn 1537-5110
dc.rights.accesslevel openAccess
dc.type.version acceptedVersion

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