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    <subfield code="a">Araujo, Leonardo </subfield>
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    <subfield code="a">Pinto, Felipe Augusto Moretti Ferreira </subfield>
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    <subfield code="a">Laconski, James Matheus Ossacz </subfield>
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    <subfield code="a">Nogueira, Paulo Henrique da Silva </subfield>
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    <subfield code="a">Padilha, Gustavo dos Santos </subfield>
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    <subfield code="a">Eberhardt, Paulo Eduardo Rocha </subfield>
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    <subfield code="a">Formula&#xE7;&#xF5;es de fosfitos para o controle de cancro europeu da macieira</subfield>
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Publica&#xE7;&#xE3;o online; 14 ref.; 4 illus.; Summaries (En, Pt)</subfield>
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Resumo &#x2013;   O objetivo do presente estudo foi avaliar o efeito de diferentes formula&#xE7;&#xF5;es de fosfitos para o controle do cancro europeu  da  macieira  (CEM).  No  estudo in  vitro  os  produtos  foram  incorporados  em  meio  BDA  (Batata-Dextrose-&#xC1;gar)  e  o desenvolvimento de Neonectria ditissima foi avaliado. Frutos e mudas de macieira  foram feridos e, em seguida, foram tratados e inoculados com N. ditissima em laborat&#xF3;rio e casa-de-vegeta&#xE7;&#xE3;o, respectivamente. Plantas de macieira &#x2018;Gala&#x2019; receberam cinco tratamentos com fosfitos em diferentes est&#xE1;gios fenol&#xF3;gicos para prote&#xE7;&#xE3;o da infec&#xE7;&#xE3;o natural de N. ditissima a campo. Todos os fosfitos in vitro afetaram negativamente o desenvolvimento de N. ditissima. Os tratamentos fosetil al (51 e 30%), uma marca de fosfito de pot&#xE1;ssio 0-40-20 (44 e 37%) e captana (30 e 13%) reduziram a incid&#xEA;ncia de podrid&#xF5;es e di&#xE2;metro de les&#xF5;es em frutos. Em casa-de-vegeta&#xE7;&#xE3;o todos os tratamentos apresentaram altos &#xED;ndices de controle sobre a incid&#xEA;ncia do CEM (17 a 100%) e redu&#xE7;&#xE3;o do tamanho de les&#xE3;o (58 a 100%) com exce&#xE7;&#xE3;o ao fosetil al. Em condi&#xE7;&#xF5;es de campo, todos os tratamentos reduziram o n&#xFA;mero de cancros (48 a 88%), com exce&#xE7;&#xE3;o ao fosetil al e uma marca de fosfito de pot&#xE1;ssio 0-40-20. Em suma, os fosfitos reduzem os sintomas do CEM a n&#xED;veis compar&#xE1;veis aos fungicidas padr&#xF5;es captana e fosetil al, embora a formula&#xE7;&#xE3;o e a marca comercial devam ser consideradas. 


Termos  para  indexa&#xE7;&#xE3;o:    Malus domestica; Neonectria ditissima;  Doen&#xE7;as  da  macieira;  Indu&#xE7;&#xE3;o  de  resist&#xEA;ncia;  Manejo integrado</subfield>
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Abstract &#x2013;   The aim of the present study was evaluate the effect of different phosphite formulations for the control of European apple  canker  (EAC).  The  products in  vitro  were  incorporated  in  PDA  medium  and  the  development  of Neonectria diti ssima was evaluated. Fruit and apple plants were wounded, followed by treatments and inoculation with N. ditissima in laboratory and greenhouse, respectively. &#x2018;Gala&#x2019; apple trees received five treatments with phosphite at different phenological stages to protect the natural infection of N. ditissima in field. All phosphites in vitro negatively aff ected the development of N. ditissima. The treatments fosetyl al (51 and 30%), one potassium phosphite 0-40-20 (44 and 37%) and captan (30 and 13%) reduced the incidence of rot and lesion diameter in fruit.In greenhouse, all treatments showed high levels of control on EAC incidence (17 to 100%) and reduction in lesion size (58 to 100%) with the exception of fosetyl al. In field conditions, all treatments reduced the number of cankers (48 to 88%), with the excepti on of fosetyl al and one potassium phosphite 0-40-20. The results indicate that phosphites can be used in the management of EAC, although the formulation and trademark must be considered. 


Index terms: Malus domestica;  Neonectria ditissima; Apple diseases; Resistance induction; Integrated management.</subfield>
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    <subfield code="a">MA&#xC7;&#xC3;</subfield>
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    <subfield code="a">DOEN&#xC7;A F&#xDA;NGICA</subfield>
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    <subfield code="a">CANCRO</subfield>
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    <subfield code="a">CONTROLE INTEGRADO</subfield>
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    <subfield code="a">DEFESA VEGETAL</subfield>
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    <subfield code="d">Florian&#xF3;polis-SC Empresa de Pesquisa Agropecu&#xE1;ria e Extens&#xE3;o Rural de Santa Catarina 1988-</subfield>
    <subfield code="o">2024-3831</subfield>
    <subfield code="t">Agropecu&#xE1;ria Catarinense (Brazil)</subfield>
    <subfield code="x">0103-0779</subfield>
    <subfield code="g">v. 35(2) p. 37-43; (2022)</subfield>
    <subfield code="w">BR2025002902</subfield>
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    <subfield code="u">https://publicacoes.epagri.sc.gov.br/rac/article/view/1457/1393</subfield>
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    <subfield code="c">ANA</subfield>
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