Adjuvants affect penetration of copper through isolated cuticles of Citrus leaves and fruit
Identifieur interne : 002591 ( Main/Merge ); précédent : 002590; suivant : 002592Adjuvants affect penetration of copper through isolated cuticles of Citrus leaves and fruit
Auteurs : Vladimir Orbovic [États-Unis] ; Diann Achor [États-Unis] ; James P. Syvertsen [États-Unis]Source :
- HortScience [ 0018-5345 ] ; 2007.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Fruit, Horticulture, Agrume, Adjuvant, Cuivre.
English descriptors
- KwdEn :
Abstract
Copper (Cu)-based fungicidal sprays are widely used on many crops although Cu sprays can be phytotoxic under some conditions. The mechanism of phytotoxicity is poorly understood but must involve toxic levels of Cu penetrating plant tissues. We studied the effect of different adjuvants on the deposition pattern of droplets and penetration of Cu (in Kocide fungicide) through isolated cuticles of 'Marsh' grapefruit leaves and 'Valencia' orange fruit. The addition of the silicone-based L-77 surfactant to the Kocide suspension markedly increased the spread of the droplets on cuticles and increased the penetration of Cu through fruit and abaxial leaf cuticles, both with stomatal pores, but not through astomatous adaxial leaf cuticles, which had much lower permeability. Urea and petroleum spray oil adjuvants had no effect on surface area of droplets or the penetration of Cu through leaf and fruit cuticles. Spray tank mixes of Cu fungicides with organosilicone surfactants should be avoided because these surfactants can enhance the penetration of Cu into citrus leaves and fruit thereby leading to phytotoxicity.
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Pascal:07-0463311Le document en format XML
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Syvertsen</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>Department of Horticultural Sciences, Citrus Research and Education Center, University of Florida, IFAS, 700 Experiment Station Road</s1><s2>Lake Alfred, FL 33850</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Floride</region></placeName></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">07-0463311</idno><date when="2007">2007</date><idno type="stanalyst">PASCAL 07-0463311 INIST</idno><idno type="RBID">Pascal:07-0463311</idno><idno type="wicri:Area/PascalFrancis/Corpus">000449</idno><idno type="wicri:Area/PascalFrancis/Curation">000555</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">000501</idno><idno type="wicri:doubleKey">0018-5345:2007:Orbovic V:adjuvants:affect:penetration</idno><idno type="wicri:Area/Main/Merge">002591</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Adjuvants affect penetration of copper through isolated cuticles of Citrus leaves and fruit</title><author><name sortKey="Orbovic, Vladimir" sort="Orbovic, Vladimir" uniqKey="Orbovic V" first="Vladimir" last="Orbovic">Vladimir Orbovic</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>Department of Horticultural Sciences, Citrus Research and Education Center, University of Florida, IFAS, 700 Experiment Station Road</s1><s2>Lake Alfred, FL 33850</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Floride</region></placeName></affiliation></author><author><name sortKey="Achor, Diann" sort="Achor, Diann" uniqKey="Achor D" first="Diann" last="Achor">Diann Achor</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>Department of Horticultural Sciences, Citrus Research and Education Center, University of Florida, IFAS, 700 Experiment Station Road</s1><s2>Lake Alfred, FL 33850</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Floride</region></placeName></affiliation></author><author><name sortKey="Syvertsen, James P" sort="Syvertsen, James P" uniqKey="Syvertsen J" first="James P." last="Syvertsen">James P. Syvertsen</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>Department of Horticultural Sciences, Citrus Research and Education Center, University of Florida, IFAS, 700 Experiment Station Road</s1><s2>Lake Alfred, FL 33850</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Floride</region></placeName></affiliation></author></analytic><series><title level="j" type="main">HortScience</title><title level="j" type="abbreviated">HortScience</title><idno type="ISSN">0018-5345</idno><imprint><date when="2007">2007</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">HortScience</title><title level="j" type="abbreviated">HortScience</title><idno type="ISSN">0018-5345</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adjuvant</term><term>Citrus fruit</term><term>Citrus paradisi</term><term>Citrus sinensis</term><term>Copper</term><term>Cuticle</term><term>Fruit</term><term>Grapefruit</term><term>Horticulture</term><term>Orange</term><term>Penetration</term><term>Plant leaf</term><term>Rutaceae</term><term>Urea</term><term>Ureas</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Pénétration</term><term>Cuticule</term><term>Feuille végétal</term><term>Fruit</term><term>Orange</term><term>Horticulture</term><term>Agrume</term><term>Rutaceae</term><term>Citrus paradisi</term><term>Citrus sinensis</term><term>Adjuvant</term><term>Cuivre</term><term>Pomélo</term><term>Urée</term><term>Urées</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Fruit</term><term>Horticulture</term><term>Agrume</term><term>Adjuvant</term><term>Cuivre</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Copper (Cu)-based fungicidal sprays are widely used on many crops although Cu sprays can be phytotoxic under some conditions. The mechanism of phytotoxicity is poorly understood but must involve toxic levels of Cu penetrating plant tissues. We studied the effect of different adjuvants on the deposition pattern of droplets and penetration of Cu (in Kocide fungicide) through isolated cuticles of 'Marsh' grapefruit leaves and 'Valencia' orange fruit. The addition of the silicone-based L-77 surfactant to the Kocide suspension markedly increased the spread of the droplets on cuticles and increased the penetration of Cu through fruit and abaxial leaf cuticles, both with stomatal pores, but not through astomatous adaxial leaf cuticles, which had much lower permeability. Urea and petroleum spray oil adjuvants had no effect on surface area of droplets or the penetration of Cu through leaf and fruit cuticles. Spray tank mixes of Cu fungicides with organosilicone surfactants should be avoided because these surfactants can enhance the penetration of Cu into citrus leaves and fruit thereby leading to phytotoxicity.</div></front></TEI><affiliations><list><country><li>États-Unis</li></country><region><li>Floride</li></region></list><tree><country name="États-Unis"><region name="Floride"><name sortKey="Orbovic, Vladimir" sort="Orbovic, Vladimir" uniqKey="Orbovic V" first="Vladimir" last="Orbovic">Vladimir Orbovic</name></region><name sortKey="Achor, Diann" sort="Achor, Diann" uniqKey="Achor D" first="Diann" last="Achor">Diann Achor</name><name sortKey="Syvertsen, James P" sort="Syvertsen, James P" uniqKey="Syvertsen J" first="James P." last="Syvertsen">James P. Syvertsen</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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