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Identification of nematotoxic volatiles increases the chance of identifying molecules for use in commercial nematicides.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>VOCs produced after the incorporation of castor bean cake in the soil resulted in immobility (&gt;97.3%) and death (&gt;96.9%) of <jats:styled-content style=\"fixed-case\"><jats:italic>M. incognita<\/jats:italic><\/jats:styled-content> second\u2010stage juveniles (J2) and reduction in <jats:styled-content style=\"fixed-case\"><jats:italic>M. incognita<\/jats:italic><\/jats:styled-content> egg\u2010hatch (&gt;74.3%) at all concentrations of cake tested (1.5\u20136.0%). A similar reduction in <jats:styled-content style=\"fixed-case\"><jats:italic>M. incognita<\/jats:italic><\/jats:styled-content> infectivity and reproduction was observed when nematodes were exposed to these VOCs and inoculated into tomato plants or exposed directly upon contact with the soil. We identified 32 VOCs produced by castor bean cake when incorporated into soil by using solid phase micro\u2010extraction gas chromatography coupled with mass spectrometry (SPME\u2010GC\u2010MS). Four of the most intense peaks in the chromatogram represented the compounds phenol, 4\u2010methylphenol, \u03b3\u2010decalactone, and skatole. When <jats:styled-content style=\"fixed-case\"><jats:italic>M. incognita<\/jats:italic><\/jats:styled-content> J2 were exposed to these compounds, all of the compounds demonstrated nematicidal activity with low median lethal concentration (LC<jats:sub>50<\/jats:sub>) values.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Castor bean cake incorporated into the soil produces volatile compounds which are toxic to <jats:styled-content style=\"fixed-case\"><jats:italic>M. incognita<\/jats:italic><\/jats:styled-content>. These substances show potential for application in the nematicide\u2010producing industry. \u00a9 2018 Society of Chemical Industry<\/jats:p><\/jats:sec>","DOI":"10.1002\/ps.5142","type":"journal-article","created":{"date-parts":[[2018,7,12]],"date-time":"2018-07-12T03:04:00Z","timestamp":1531364640000},"page":"476-483","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":37,"title":["Volatile organic compounds produced by castor bean cake incorporated into the soil exhibit toxic activity against <i>Meloidogyne incognita<\/i>"],"prefix":"10.1002","volume":"75","author":[{"given":"Luma A","family":"Pedroso","sequence":"first","affiliation":[{"name":"Department of Plant Pathology, Laboratory of Nematology Federal University of Lavras (UFLA)  Lavras Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3284-7412","authenticated-orcid":false,"given":"Vicente P","family":"Campos","sequence":"additional","affiliation":[{"name":"Department of Plant Pathology, Laboratory of Nematology Federal University of Lavras (UFLA)  Lavras Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marcio P","family":"Pedroso","sequence":"additional","affiliation":[{"name":"Department of Chemistry Federal University of Lavras (UFLA)  Lavras Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Aline F","family":"Barros","sequence":"additional","affiliation":[{"name":"Department of Plant Pathology, Laboratory of Nematology Federal University of Lavras (UFLA)  Lavras Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eduardo S","family":"Freire","sequence":"additional","affiliation":[{"name":"Department of Plant Pathology, Laboratory of Nematology Federal University of Lavras (UFLA)  Lavras Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Franciely MP","family":"Resende","sequence":"additional","affiliation":[{"name":"Department of Plant Pathology, Laboratory of Nematology Federal University of Lavras (UFLA)  Lavras Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2018,9,11]]},"reference":[{"key":"e_1_2_7_2_1","first-page":"28","volume-title":"Biological Control of Root\u2010knot Nematodes (Meloidogyne spp.) by the Fungus Pochonia chlamydosporia","author":"Bengtsson T","year":"2015"},{"key":"e_1_2_7_3_1","first-page":"26","article-title":"Current nematode threats to Brazilian agriculture","volume":"20","author":"Machado ACZ","year":"2014","journal-title":"Curr Agric Sci Technol"},{"key":"e_1_2_7_4_1","series-title":"Biology and Control","first-page":"351","volume-title":"An advanced treatise on Meloidogyne","author":"Ferraz S","year":"1985"},{"key":"e_1_2_7_5_1","first-page":"190","article-title":"Tempo de exposi\u00e7\u00e3o de juvenis de segundo est\u00e1dio a vol\u00e1teis emitidos por macerados de nim e de mostarda e biofumiga\u00e7\u00e3o contra Meloidogyne incognita","volume":"44","author":"Barros AF","year":"2014","journal-title":"Nematropica"},{"key":"e_1_2_7_6_1","first-page":"118","volume-title":"Cereal Cyst Nematodes: Status, Research and Outlook","author":"Oka Y","year":"2009"},{"key":"e_1_2_7_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0167-1987(03)00086-2"},{"key":"e_1_2_7_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.apsoil.2009.11.003"},{"key":"e_1_2_7_9_1","first-page":"68","article-title":"Efeito da torta de mamona sobre popula\u00e7\u00f5es de nematoides fitoparasitos e a produtividade da cana\u2010de\u2010a\u00e7\u00facar","volume":"34","author":"Dinardo\u2010Miranda LL","year":"2010","journal-title":"Nematologia Brasileira"},{"key":"e_1_2_7_10_1","first-page":"106","article-title":"Soil amendment with castor bean oilcake and jack bean seed powder to control Meloidogyne javanica on tomato roots","volume":"33","author":"Lopes EA","year":"2009","journal-title":"Nematologia Brasileira"},{"key":"e_1_2_7_11_1","doi-asserted-by":"publisher","DOI":"10.1590\/S0100-29452013000200038"},{"key":"e_1_2_7_12_1","unstructured":"Conab S\u00e9ries Hist\u00f3ricas de \u00c1rea Plantada Produtividade e Produ\u00e7\u00e3o Estimativa em janeiro. 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