The Efficacy of Ethaboxam as a Soybean Seed Treatment Toward Phytophthora, Phytopythium, and Pythium in Ohio.
Identifieur interne : 000033 ( Main/Exploration ); précédent : 000032; suivant : 000034The Efficacy of Ethaboxam as a Soybean Seed Treatment Toward Phytophthora, Phytopythium, and Pythium in Ohio.
Auteurs : Kelsey Scott [États-Unis] ; Meredith Eyre [États-Unis] ; Dair Mcduffee [États-Unis] ; Anne E. Dorrance [États-Unis]Source :
- Plant disease [ 0191-2917 ] ; 2020.
Descripteurs français
- KwdFr :
- MESH :
English descriptors
- KwdEn :
- MESH :
- chemical : Thiazoles, Thiophenes.
- geographic : Ohio.
- Phytophthora, Plant Diseases, Pythium, Seeds, Soybeans.
Abstract
Phytophthora, Phytopythium, and Pythium species that cause early-season seed decay and pre-emergence and post-emergence damping off of soybean are most commonly managed with seed treatments. The phenylamide fungicides metalaxyl and mefenoxam, and ethaboxam are effective toward some but not all species. The primary objective of this study was to evaluate the efficacy of ethaboxam in fungicide mixtures and compare those with other fungicides as seed treatments to protect soybean against Pythium, Phytopythium, and Phytophthora species in both high-disease field environments and laboratory seed plate assays. The second objective was to evaluate these seed treatment mixtures on cultivars that have varying levels and combinations of resistance to these soilborne pathogens. Five of eight environments received adequate precipitation in the 14 days after planting for high levels of seedling disease development and treatment evaluations. Three environments had significantly greater stands, and three had significantly greater yield when ethaboxam was used in the seed treatment mixture compared with treatments containing metalaxyl or mefenoxam alone. Three fungicide formulations significantly reduced disease severity compared with nontreated in the seed plate assay for 17 species. However, the combination of ethaboxam plus metalaxyl in a mixture was more effective than either fungicide alone against some Pythium and Phytopythium species. Overall, our results indicate that the addition of ethaboxam to a fungicide seed treatment is effective in reducing seed rot caused by these pathogens commonly isolated from soybean in Ohio but that these effects can be masked when cultivars with resistance are planted.
DOI: 10.1094/PDIS-09-19-1818-RE
PubMed: 32191161
Affiliations:
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Dorrance</name><affiliation wicri:level="2"><nlm:affiliation>Department of Plant Pathology, The Ohio State University, Wooster, OH 44691.</nlm:affiliation><country xml:lang="fr">États-Unis</country><placeName><region type="state">Ohio</region></placeName><wicri:cityArea>Department of Plant Pathology, The Ohio State University, Wooster</wicri:cityArea></affiliation></author></analytic><series><title level="j">Plant disease</title><idno type="ISSN">0191-2917</idno><imprint><date when="2020" type="published">2020</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Ohio (MeSH)</term><term>Phytophthora (MeSH)</term><term>Plant Diseases (MeSH)</term><term>Pythium (MeSH)</term><term>Seeds (MeSH)</term><term>Soybeans (MeSH)</term><term>Thiazoles (MeSH)</term><term>Thiophenes (MeSH)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Graines (MeSH)</term><term>Maladies des plantes (MeSH)</term><term>Ohio (MeSH)</term><term>Phytophthora (MeSH)</term><term>Pythium (MeSH)</term><term>Soja (MeSH)</term><term>Thiazoles (MeSH)</term><term>Thiophènes (MeSH)</term></keywords><keywords scheme="MESH" type="chemical" xml:lang="en"><term>Thiazoles</term><term>Thiophenes</term></keywords><keywords scheme="MESH" type="geographic" xml:lang="en"><term>Ohio</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Phytophthora</term><term>Plant Diseases</term><term>Pythium</term><term>Seeds</term><term>Soybeans</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Graines</term><term>Maladies des plantes</term><term>Ohio</term><term>Phytophthora</term><term>Pythium</term><term>Soja</term><term>Thiazoles</term><term>Thiophènes</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><i>Phytophthora</i>, <i>Phytopythium</i>, and <i>Pythium</i> species that cause early-season seed decay and pre-emergence and post-emergence damping off of soybean are most commonly managed with seed treatments. The phenylamide fungicides metalaxyl and mefenoxam, and ethaboxam are effective toward some but not all species. The primary objective of this study was to evaluate the efficacy of ethaboxam in fungicide mixtures and compare those with other fungicides as seed treatments to protect soybean against <i>Pythium</i>, <i>Phytopythium</i>, and <i>Phytophthora</i> species in both high-disease field environments and laboratory seed plate assays. The second objective was to evaluate these seed treatment mixtures on cultivars that have varying levels and combinations of resistance to these soilborne pathogens. Five of eight environments received adequate precipitation in the 14 days after planting for high levels of seedling disease development and treatment evaluations. Three environments had significantly greater stands, and three had significantly greater yield when ethaboxam was used in the seed treatment mixture compared with treatments containing metalaxyl or mefenoxam alone. Three fungicide formulations significantly reduced disease severity compared with nontreated in the seed plate assay for 17 species. However, the combination of ethaboxam plus metalaxyl in a mixture was more effective than either fungicide alone against some <i>Pythium</i> and <i>Phytopythium</i> species. Overall, our results indicate that the addition of ethaboxam to a fungicide seed treatment is effective in reducing seed rot caused by these pathogens commonly isolated from soybean in Ohio but that these effects can be masked when cultivars with resistance are planted.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" IndexingMethod="Automated" Owner="NLM"><PMID Version="1">32191161</PMID><DateCompleted><Year>2020</Year><Month>05</Month><Day>05</Day></DateCompleted><DateRevised><Year>2020</Year><Month>05</Month><Day>05</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Print">0191-2917</ISSN><JournalIssue CitedMedium="Print"><Volume>104</Volume><Issue>5</Issue><PubDate><Year>2020</Year><Month>May</Month></PubDate></JournalIssue><Title>Plant disease</Title><ISOAbbreviation>Plant Dis</ISOAbbreviation></Journal><ArticleTitle>The Efficacy of Ethaboxam as a Soybean Seed Treatment Toward <i>Phytophthora</i>, <i>Phytopythium</i>, and <i>Pythium</i> in Ohio.</ArticleTitle><Pagination><MedlinePgn>1421-1432</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1094/PDIS-09-19-1818-RE</ELocationID><Abstract><AbstractText><i>Phytophthora</i>, <i>Phytopythium</i>, and <i>Pythium</i> species that cause early-season seed decay and pre-emergence and post-emergence damping off of soybean are most commonly managed with seed treatments. The phenylamide fungicides metalaxyl and mefenoxam, and ethaboxam are effective toward some but not all species. The primary objective of this study was to evaluate the efficacy of ethaboxam in fungicide mixtures and compare those with other fungicides as seed treatments to protect soybean against <i>Pythium</i>, <i>Phytopythium</i>, and <i>Phytophthora</i> species in both high-disease field environments and laboratory seed plate assays. The second objective was to evaluate these seed treatment mixtures on cultivars that have varying levels and combinations of resistance to these soilborne pathogens. Five of eight environments received adequate precipitation in the 14 days after planting for high levels of seedling disease development and treatment evaluations. Three environments had significantly greater stands, and three had significantly greater yield when ethaboxam was used in the seed treatment mixture compared with treatments containing metalaxyl or mefenoxam alone. Three fungicide formulations significantly reduced disease severity compared with nontreated in the seed plate assay for 17 species. However, the combination of ethaboxam plus metalaxyl in a mixture was more effective than either fungicide alone against some <i>Pythium</i> and <i>Phytopythium</i> species. Overall, our results indicate that the addition of ethaboxam to a fungicide seed treatment is effective in reducing seed rot caused by these pathogens commonly isolated from soybean in Ohio but that these effects can be masked when cultivars with resistance are planted.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Scott</LastName><ForeName>Kelsey</ForeName><Initials>K</Initials><AffiliationInfo><Affiliation>Department of Plant Pathology, The Ohio State University, Wooster, OH 44691.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Eyre</LastName><ForeName>Meredith</ForeName><Initials>M</Initials><AffiliationInfo><Affiliation>Department of Plant Pathology, The Ohio State University, Wooster, OH 44691.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>McDuffee</LastName><ForeName>Dair</ForeName><Initials>D</Initials><AffiliationInfo><Affiliation>Valent USA LLC, Walnut Creek, CA 94596.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Dorrance</LastName><ForeName>Anne E</ForeName><Initials>AE</Initials><Identifier Source="ORCID">http://orcid.org/0000-0003-4138-6707</Identifier><AffiliationInfo><Affiliation>Department of Plant Pathology, The Ohio State University, Wooster, OH 44691.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2020</Year><Month>03</Month><Day>19</Day></ArticleDate></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>Plant Dis</MedlineTA><NlmUniqueID>9882809</NlmUniqueID><ISSNLinking>0191-2917</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D013844">Thiazoles</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D013876">Thiophenes</NameOfSubstance></Chemical><Chemical><RegistryNumber>7MP0L17BM8</RegistryNumber><NameOfSubstance UI="C492076">ethaboxam</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D009820" MajorTopicYN="N" Type="Geographic">Ohio</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D010838" MajorTopicYN="Y">Phytophthora</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D010935" MajorTopicYN="N">Plant Diseases</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D011775" MajorTopicYN="Y">Pythium</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D012639" MajorTopicYN="N">Seeds</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D013025" MajorTopicYN="N">Soybeans</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D013844" MajorTopicYN="N">Thiazoles</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D013876" MajorTopicYN="N">Thiophenes</DescriptorName></MeshHeading></MeshHeadingList><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">Glycine max</Keyword><Keyword MajorTopicYN="N">disease management</Keyword><Keyword MajorTopicYN="N">field crops</Keyword><Keyword MajorTopicYN="N">oilseeds and legumes</Keyword><Keyword MajorTopicYN="N">oomycetes</Keyword><Keyword MajorTopicYN="N">seed treatments</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>2020</Year><Month>3</Month><Day>20</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2020</Year><Month>5</Month><Day>6</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2020</Year><Month>3</Month><Day>20</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">32191161</ArticleId><ArticleId IdType="doi">10.1094/PDIS-09-19-1818-RE</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>États-Unis</li></country><region><li>Californie</li><li>Ohio</li></region></list><tree><country name="États-Unis"><region name="Ohio"><name sortKey="Scott, Kelsey" sort="Scott, Kelsey" uniqKey="Scott K" first="Kelsey" last="Scott">Kelsey Scott</name></region><name sortKey="Dorrance, Anne E" sort="Dorrance, Anne E" uniqKey="Dorrance A" first="Anne E" last="Dorrance">Anne E. Dorrance</name><name sortKey="Eyre, Meredith" sort="Eyre, Meredith" uniqKey="Eyre M" first="Meredith" last="Eyre">Meredith Eyre</name><name sortKey="Mcduffee, Dair" sort="Mcduffee, Dair" uniqKey="Mcduffee D" first="Dair" last="Mcduffee">Dair Mcduffee</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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