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Title: Use of RGB vegetation indexes in assessing early effects of Verticillium Wilt of Olive in asymptomatic plants in high and low fertility scenarios
Author: Sancho-Adamson, Marc
Trillas Gay, M. Isabel
Bort Pie, Jordi
Fernandez Gallego, José Armando
Romanyà i Socoró, Joan
Keywords: Nutrició vegetal
Fongs en l'agricultura
Plant nutrition
Fungi in agriculture
Issue Date: 13-Mar-2019
Publisher: MDPI
Abstract: Verticillium Wilt of Olive, a disease caused by the hemibiotrophic vascular fungus Verticillium dahliae Kleb. presents one of the most important constraints to olive production in the world, with an especially notable impact in Mediterranean agriculture. This study evaluates the use of RGB vegetation indexes in assessing the effects of this disease during the biotrophic phase of host-pathogen interaction, in which symptoms of wilt are not yet evident. While no differences were detected by measuring stomatal conductance and chlorophyll fluorescence, results obtained from RGB indexes showed significant differences between control and inoculated plants for indexes Saturation, a*, b*, GA, NGRDI and TGI, presenting a reduction in plant growth as well as in green and yellow color components as an effect of inoculation. These results were contrasted across two scenarios of mineral fertilization in soil and soil amended with two different olive mill waste composts, presenting a clear interaction between the host-pathogen relationship and plant nutrition and suggesting the effect of V. dahliae infection during the biotrophic phase was not related to plant water status.
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It is part of: Remote Sensing, 2019, vol. 11, num. 607
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ISSN: 2072-4292
Appears in Collections:Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)

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