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In previous studies, high levels of resistance to <jats:styled-content style=\"fixed-case\">QoI<\/jats:styled-content> and <jats:styled-content style=\"fixed-case\">DMI<\/jats:styled-content> fungicides were documented in south\u2010central Spain. The aim of this study was to investigate the sensitivity of <jats:italic>P. xanthii<\/jats:italic> populations to other fungicides and to provide tools for improved disease management.<\/jats:p><\/jats:sec><jats:sec><jats:title>RESULTS<\/jats:title><jats:p>Using a leaf\u2010disc assay, sensitivity to thiophanate\u2010methyl, bupirimate and quinoxyfen of 50 isolates of <jats:italic>P. xanthii<\/jats:italic> was analysed to determine discriminatory concentrations between sensitive and resistant isolates. With the exception of thiophanate\u2010methyl, no clearly different groups of isolates could be identified, and as a result, discriminatory concentrations were established on the basis of the maximum fungicide field application rate. Subsequently, a survey of <jats:italic>P. xanthii<\/jats:italic> resistance to these fungicides was carried out by testing a collection of 237 isolates obtained during the 2002\u20132011 cucurbit growing seasons. This analysis revealed very high levels of resistance to thiophanate\u2010methyl (95%). By contrast, no resistance to bupirimate and quinoxyfen was found.<\/jats:p><\/jats:sec><jats:sec><jats:title>CONCLUSION<\/jats:title><jats:p>Results suggest that thiophanate\u2010methyl has become completely ineffective for controlling cucurbit powdery mildew in Spain. By contrast, bupirimate and quinoxyfen remain as very effective tools for cucurbit powdery mildew management. \u00a9 2014 Society of Chemical Industry<\/jats:p><\/jats:sec>","DOI":"10.1002\/ps.3943","type":"journal-article","created":{"date-parts":[[2014,11,22]],"date-time":"2014-11-22T02:33:17Z","timestamp":1416623597000},"page":"1407-1413","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":38,"title":["Sensitivity of <i>Podosphaera xanthii<\/i> populations to anti\u2010powdery\u2010mildew fungicides in Spain"],"prefix":"10.1002","volume":"71","author":[{"given":"Davinia","family":"Bell\u00f3n\u2010G\u00f3mez","sequence":"first","affiliation":[{"name":"Instituto de Hortofruticultura Subtropical y Mediterr\u00e1nea \u2018La Mayora\u2019 Universidad de M\u00e1laga \u2013 Consejo Superior de Investigaciones Cient\u00edficas (IHSM\u2010UMA\u2010CSIC)  Estaci\u00f3n Experimental \u2018La Mayora\u2019 Algarrobo\u2010Costa M\u00e1laga Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"David","family":"Vela\u2010Corc\u00eda","sequence":"additional","affiliation":[{"name":"Instituto de Hortofruticultura Subtropical y Mediterr\u00e1nea \u2018La Mayora\u2019 \u2013 Universidad de M\u00e1laga \u2013 Consejo Superior de Investigaciones Cient\u00edficas (IHSM\u2010UMA\u2010CSIC) Departamento de Microbiolog\u00eda, Universidad de M\u00e1laga  M\u00e1laga Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alejandro","family":"P\u00e9rez\u2010Garc\u00eda","sequence":"additional","affiliation":[{"name":"Instituto de Hortofruticultura Subtropical y Mediterr\u00e1nea \u2018La Mayora\u2019 \u2013 Universidad de M\u00e1laga \u2013 Consejo Superior de Investigaciones Cient\u00edficas (IHSM\u2010UMA\u2010CSIC) Departamento de Microbiolog\u00eda, Universidad de M\u00e1laga  M\u00e1laga Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Juan A","family":"Tor\u00e9s","sequence":"additional","affiliation":[{"name":"Instituto de Hortofruticultura Subtropical y Mediterr\u00e1nea \u2018La Mayora\u2019 Universidad de M\u00e1laga \u2013 Consejo Superior de Investigaciones Cient\u00edficas (IHSM\u2010UMA\u2010CSIC)  Estaci\u00f3n Experimental \u2018La Mayora\u2019 Algarrobo\u2010Costa M\u00e1laga Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2014,12,15]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1364-3703.2008.00527.x"},{"key":"e_1_2_6_3_1","first-page":"13","volume-title":"The Powdery Mildews. 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