OrangerV1, Main, Exploration, bibRecord, 001C97

Annual and polyetic progression of citrus canker on trees protected with copper sprays

Identifieur interne : 001C97 ( Main/Exploration ); précédent : 001C96; suivant : 001C98

Annual and polyetic progression of citrus canker on trees protected with copper sprays

Auteurs : F. Behlau [Belize] ; L. Amorim [Belize] ; J. Jr Belasque [Belize] ; A. Filho Bergamin [Belize] ; R. P. Jr Leite [Brésil] ; J. H. Graham [États-Unis] ; T. R. Gottwald [États-Unis]

Source :

Plant pathology [ 0032-0862 ] ; 2010.

RBID : Pascal:11-0087395

Descripteurs français

Pascal (Inist)
- Bactériose, Pulvérisation, Maladie, Epidémiologie, Modèle logistique, Phytopathologie, Rutaceae, Modélisation, Agrume, Citrus sinensis, Xanthomonas campestris pv. citri, Cuivre, Chancre plante.
Wicri :
- topic : Maladie, Agrume, Cuivre.

English descriptors

KwdEn :
- Bacteriosis, Citrus fruit, Citrus sinensis, Copper, Disease, Epidemiology, Logistic model, Modeling, Plant cankers, Plant pathology, Rutaceae, Spraying, Xanthomonas campestris pv. citri.

Abstract

The effects of copper sprays on annual and polyetic progress of citrus canker, caused by Xanthomonas citri subsp. citri, in the presence of the Asian citrus leafminer (Phyllocnistis citrella), were evaluated in a study conducted in a commercial orchard in northwest Paraná state, Brazil, where citrus canker is endemic. Nonlinear monomolecular, logistic and Gompertz models were fitted to monthly disease incidence data (proportion of leaves with symptoms) for each treatment for three seasons. The logistic model provided the best estimate of disease progress for all years and treatments evaluated and logistic parameter estimates were used to describe polyetic disease dynamics. Although citrus canker incidence increased during each of the seasons studied, it decreased over the whole study period, more so in copper-treated trees than in water-sprayed controls. Copper treatment reduced disease incidence compared with controls in every year, especially 2004-2005, when incidence was ca. 10-fold higher in controls than in treated plots (estimated asymptote values 0.82 and 0.07, respectively). Copper treatment also reduced estimated initial disease incidence and epidemic growth rates every year.

Affiliations:

Links toward previous steps (curation, corpus...)

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Le document en format XML

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<s2>13418-900, Piracicaba</s2>
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<author><name sortKey="Gottwald, T R" sort="Gottwald, T R" uniqKey="Gottwald T" first="T. R." last="Gottwald">T. R. Gottwald</name>
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<author><name sortKey="Leite, R P Jr" sort="Leite, R P Jr" uniqKey="Leite R" first="R. P. Jr" last="Leite">R. P. Jr Leite</name>
<affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Área de Proteção de Plantas, IAPAR, CP 481</s1>
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<wicri:noRegion>86047-902, Londrina</wicri:noRegion>
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<s2>Lake Alfred, FL 33850</s2>
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<sZ>6 aut.</sZ>
</inist:fA14>
<country>États-Unis</country>
<placeName><region type="state">Floride</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Gottwald, T R" sort="Gottwald, T R" uniqKey="Gottwald T" first="T. R." last="Gottwald">T. R. Gottwald</name>
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<series><title level="j" type="main">Plant pathology</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Bacteriosis</term>
<term>Citrus fruit</term>
<term>Citrus sinensis</term>
<term>Copper</term>
<term>Disease</term>
<term>Epidemiology</term>
<term>Logistic model</term>
<term>Modeling</term>
<term>Plant cankers</term>
<term>Plant pathology</term>
<term>Rutaceae</term>
<term>Spraying</term>
<term>Xanthomonas campestris pv. citri</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Bactériose</term>
<term>Pulvérisation</term>
<term>Maladie</term>
<term>Epidémiologie</term>
<term>Modèle logistique</term>
<term>Phytopathologie</term>
<term>Rutaceae</term>
<term>Modélisation</term>
<term>Agrume</term>
<term>Citrus sinensis</term>
<term>Xanthomonas campestris pv. citri</term>
<term>Cuivre</term>
<term>Chancre plante</term>
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<keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Maladie</term>
<term>Agrume</term>
<term>Cuivre</term>
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<front><div type="abstract" xml:lang="en">The effects of copper sprays on annual and polyetic progress of citrus canker, caused by Xanthomonas citri subsp. citri, in the presence of the Asian citrus leafminer (Phyllocnistis citrella), were evaluated in a study conducted in a commercial orchard in northwest Paraná state, Brazil, where citrus canker is endemic. Nonlinear monomolecular, logistic and Gompertz models were fitted to monthly disease incidence data (proportion of leaves with symptoms) for each treatment for three seasons. The logistic model provided the best estimate of disease progress for all years and treatments evaluated and logistic parameter estimates were used to describe polyetic disease dynamics. Although citrus canker incidence increased during each of the seasons studied, it decreased over the whole study period, more so in copper-treated trees than in water-sprayed controls. Copper treatment reduced disease incidence compared with controls in every year, especially 2004-2005, when incidence was ca. 10-fold higher in controls than in treated plots (estimated asymptote values 0.82 and 0.07, respectively). Copper treatment also reduced estimated initial disease incidence and epidemic growth rates every year.</div>
</front>
</TEI>
<affiliations><list><country><li>Belize</li>
<li>Brésil</li>
<li>États-Unis</li>
</country>
<region><li>Floride</li>
<li>État de São Paulo</li>
</region>
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<tree><country name="Belize"><region name="État de São Paulo"><name sortKey="Behlau, F" sort="Behlau, F" uniqKey="Behlau F" first="F." last="Behlau">F. Behlau</name>
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<name sortKey="Amorim, L" sort="Amorim, L" uniqKey="Amorim L" first="L." last="Amorim">L. Amorim</name>
<name sortKey="Belasque, J Jr" sort="Belasque, J Jr" uniqKey="Belasque J" first="J. Jr" last="Belasque">J. Jr Belasque</name>
<name sortKey="Bergamin, A Filho" sort="Bergamin, A Filho" uniqKey="Bergamin A" first="A. Filho" last="Bergamin">A. Filho Bergamin</name>
</country>
<country name="Brésil"><noRegion><name sortKey="Leite, R P Jr" sort="Leite, R P Jr" uniqKey="Leite R" first="R. P. Jr" last="Leite">R. P. Jr Leite</name>
</noRegion>
</country>
<country name="États-Unis"><region name="Floride"><name sortKey="Graham, J H" sort="Graham, J H" uniqKey="Graham J" first="J. H." last="Graham">J. H. Graham</name>
</region>
<name sortKey="Gottwald, T R" sort="Gottwald, T R" uniqKey="Gottwald T" first="T. R." last="Gottwald">T. R. Gottwald</name>
</country>
</tree>
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Annual and polyetic progression of citrus canker on trees protected with copper sprays

Annual and polyetic progression of citrus canker on trees protected with copper sprays

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri