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dc.creatorGuimarães, Rafaela Araújo-
dc.creatorZanotto, Edgar-
dc.creatorPherez Perrony, Paul Esteban-
dc.creatorZanotto, Lidia Almeida Salum-
dc.creatorSilva, Leonardo José da-
dc.creatorMachado, José da Cruz-
dc.creatorPinto, Felipe Augusto Moretti Ferreira-
dc.creatorMedeiros, Henrique Novaes-
dc.creatorVon Pinho, Renzo Garcia-
dc.creatorMelo, Itamar Soares de-
dc.creatorSilva, Júlio Carlos Pereira da-
dc.creatorMedeiros, Fernanda Carvalho Lopes de-
dc.creatorMedeiros, Flávio Henrique Vasconcelos de-
dc.identifier.citationGUIMARÃES, R. A. et al. Integrating a chemical fungicide and Bacillus subtilis BIOUFLA2 ensures leaf protection and reduces ear rot (Fusarium verticillioides) and fumonisin content in maize. Journal of Phytopathology, [S. I.], v. 169, n. 3, p. 139-148, Mar. 2021. DOI:
dc.description.abstractFungicides in maize production under tropical conditions reduce losses from foliar diseases, but only a few reduce ear rot incidence or mycotoxin contamination in kernels. Biocontrol agents (BCAs) may reduce postharvest losses but their efficacy has not been demonstrated in field conditions. Here, we evaluated the use of bacterial isolates in tandem with fungicides on Fusarium verticillioides incidence and fumonisin content. After an early screening, Bacillus subtilis and Streptomyces araujoniae isolates were used in field trials. Maize plants were sprayed twice: at the end of the vegetative stage (V9) and at the beginning of the reproductive stage (R1). Sprays were made by applying water, B. subtilis strain BIOUFLA2, S. araujoniae strain ASBV-1T, or fungicide (cyproconazole + azoxystrobin) in different combinations, totalling nine treatments. Ten days later, all maize ears were inoculated with F. verticillioides. Plants were assessed for foliar diseases, grain yield, F. verticillioides incidence and fumonisin content in kernels. The treatment with two fungicide sprays reduced most of the foliar diseases but not F. verticillioides incidence in kernels. Twice-sprayed B. subtilis and S. araujoniae reduced F. verticillioides, but did not protect leaves against other pathogens. All treatments encompassing a fungicide followed by one of the BCAs reduced F. verticillioides incidence compared to control. Twice-sprayed fungicide increased fumonisin by 50% compared to water control, while fungicide followed by B. subtilis decreased the fumonisin content by 40%. Replacing the second chemical spray with S. araujoniae did not reduce the fumonisin content but provided a higher yield than a twice-sprayed fungicide. Exclusive use of chemical fungicides may not ensure higher grain quality and yield, but the integration with B. subtilis BIOUFLA2 can accomplish both.pt_BR
dc.publisherJohn Wiley & Sons, Ltd.pt_BR
dc.sourceJournal of Phytopathologypt_BR
dc.subjectBiological control agentspt_BR
dc.subjectFoliar diseasespt_BR
dc.subjectIntegrated disease managementpt_BR
dc.subjectZea mayspt_BR
dc.subjectMilho - Doenças e pragaspt_BR
dc.subjectAgentes de controle biológicopt_BR
dc.subjectDoenças foliarespt_BR
dc.subjectGestão integrada de doençaspt_BR
dc.titleIntegrating a chemical fungicide and Bacillus subtilis BIOUFLA2 ensures leaf protection and reduces ear rot (Fusarium verticillioides) and fumonisin content in maizept_BR
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