RESÍDUOS ORGÂNICOS NO CONTROLE DE Fusarium oxysporum f. sp. passiflorae EM MARACUJAZEIRO AMARELO

Ferreira, Renato Bernardes; Rodrigues, Antônia Alice Costa; Moraes, Flávio Henrique Reis; Silva, Erlen Keila Candido e; Nascimento, Ivaneide de Oliveira

doi:10.15446/abc.v20n3.44720

Cited by 11 publications

(10 citation statements)

References 19 publications

(18 reference statements)

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“…Comparing the different eucalyptus extract concentrations, it was observed that the highest concentration (2%) statistically differed from the others, providing smaller diameter of the C. cassiicola colony. The effectiveness of eucalyptus extract in the fungal inhibition was also verified by Ferreira et al (2015), who found that concentrations from 10% inhibited 100% the mycelial growth of Fusarium oxysporum f. sp. passiflorae in in vitro assays.…”

Section: Resultsmentioning

confidence: 70%

REACTION OF PAPAYA GENOTYPES TO TARGET SPOT AND ACTIVITY OF PLANT EXTRACTS AND Bacillus spp. ON Corynespora cassiicola

et al. 2018

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Papaya target-spot, caused by fungus Corynespora cassiicola presents a wide geographic distribution, causing leaf spots in several hosts. The aim of this research was to evaluate the behavior of papaya varieties and/or selections to the natural occurrence of target spot, and test the fungi toxic effect of neem, citronella and eucalyptus extracts, and fungi static effects of Bacillus isolates on the fungus C. cassiicola in vitro. To evaluate the natural occurrence of the disease in field, symptoms on leaves of 11 papaya varieties and/or selections have been assessed. The pathogenicity of isolates was verified by inoculation of plants in greenhouse. Neem, citronella and eucalyptus extracts were prepared at concentrations of 10, 15 and 20% and poured into Petri dishes containing C. cassiicola mycelium discs. For , Bacillusnine isolates were used, and the antagonistic potential was evaluated by the pairing of pathogen and isolate colonies by the circle method. Papaya varieties and/or selections presented all leaves with injury, and Canaan Sunrise Solo and Canaan Golden selections showed the greatest number of injuries per leaf, showing that papaya varieties and/or selections respond differently to the phytopathogen. All plant extracts tested showed inhibitory effect on the mycelial growth of C. cassiicola in vitro. Bacillus isolates showed an antagonistic potential on the mycelial growth of the fungus, with B. methylotrophicus (Iso 31 and Iso 41) being the most promising as a biological control agent. The results indicate that forms of alternative control of diseases are promising in the management of papaya target-spot.

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Section: Resultsmentioning

confidence: 70%

REACTION OF PAPAYA GENOTYPES TO TARGET SPOT AND ACTIVITY OF PLANT EXTRACTS AND Bacillus spp. ON Corynespora cassiicola

et al. 2018

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“…No information was found on Cg inhibition by this plant, although here it showed good inhibition (76.29%). Fox inhibition by autoclaved extract was low (10.74%); however, Ferreira et al (2015) observed that only 10% root peel extract, without heat sterilization, led to inhibition of 53.17% of this passion fruit fungus. The extract of this plant showed low Ss inhibition (6.55%), according to a study by Garcia et al (2016).…”

Section: Resultsmentioning

confidence: 88%

Some Plants Showing Antagonism to Five Plant Pathogenic Fungi

Ferreira¹,

Pinto²,

Sena³

et al. 2020

JAS

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Fungi are among the main agents of plant diseases, being responsible for major losses in agriculture. The control of these microorganisms carried out using chemical compounds and numerous cases of resistance have already been observed, which makes it necessary to search for alternative methods of management of these pathogens. Therefore, the aim of this study, to evaluate the antifungal potential in plants. Twenty-four (24) plant extracts were tested for their antifungal potential against five plant pathogenic fungi: Sclerotinia sclerotiorum (Ss), Stromatinia cepivora (Sc), Fusarium oxysporum (Fox), Colletotrichum gloesporioides (Cg) and Verticillium dahlia (Vd). For the evaluation of the fungicidal potential, plant extracts were prepared by liquefying the plants in distilled water. The extracts were incorporated into PDA (Potato-Dextrose-Agar) culture medium to a final concentration of 35% and autoclaved. Then, PDA discs colonized by the aforementioned fungi were added to the center of each plate with the respective treatments (plant extracts). When all control treatments (PDA medium without plant extract) had colonized the entire Petri dish, the diameters of the fungal colonies were measured to calculate the Mycelial Growth Inhibition Index (MGI). Tests showed that all these plant extracts have some antifungal activity, ranging from 0 to 100% inhibition. In general, extracts of basil, lavender, guaco, rue, toxic cassava and black plum were the ones that stood out, with MGIs above 50%. New studies are being conducted to evaluate the activity of plant extracts without autoclaving, inhibition of sclerotia formation, to determine the minimum inhibitory concentration, as well as other parts of plants like roots and seeds, mixtures of plant extracts and in vivo antagonism tests.

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“…No que concerne aos atributos físicos, os resíduos atuam no processo de manejo, conservação do solo e água por melhorar a capacidade de infiltração, manutenção da umidade e formação de agregados do solo (CARRIZO et al, 2015;SILVA et al, 2017) Portanto, é imprescindível implementar o manejo integrado de doenças por meio do controle químico, físico, biológico e/ou cultural. Porém, dentre essas técnicas, o uso de agroquímicos de forma não seletiva e/ou indiscriminado pode ocasionar contaminação do ambiente, além de prejuízos causados à saúde humana e o resistência de patógenos aos fungicidas; então, tem-se buscado, medidas alternativas no manejo de doenças (FERREIRA et al, 2015), tornando-se necessárias abordagens ecológicas que permitam a segurança alimentar durante o processos do manejo fitossanitário de patógenos do solo (AYDINLI e MENNAN, 2018), promovendo uma agricultura sustentável.…”

Section: Desenvolvimentounclassified

“…Em estudo desenvolvido por Ferreira et al (2015), foi avaliado o controle de Fusarium oxysporum f. sp. passiflorae utilizando-se os seguintes resíduos vegetais: 1) folhas de eucalipto, 2) bagaço de coco babaçu e 3) casca de mandioca nas concentrações in vitro (0, 2, 4, 6, 8 e 10%) na forma de extrato aquoso, e in vivo (0, 20, 40, 60, 80 e 100 g kg -1 de solo), incorporados ao solo, em casa de vegetação.…”

Section: Desenvolvimentounclassified

CRESCIMENTO MICELIAL DE Stemphyllium SP. AGENTE ETIOLÓGICO DA QUEIMA DE ESTNFÍLIO NA CULTURA DA CEBOLA (Allium cepa) EM DIFERENTES MEIOS DE CULTURA

Neves¹,

Pereira²

2020

Aspectos Fitossanitários Da Agricultura

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Todo o conteúdo deste livro está licenciado sob uma Licença de Atribuição Creative Commons. Atribuição 4.0 Internacional (CC BY 4.0). O conteúdo dos artigos e seus dados em sua forma, correção e confiabilidade são de responsabilidade exclusiva dos autores. Permitido o download da obra e o compartilhamento desde que sejam atribuídos créditos aos autores, mas sem a possibilidade de alterá-la de nenhuma forma ou utilizá-la para fins comerciais.

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RESÍDUOS ORGÂNICOS NO CONTROLE DE Fusarium oxysporum f. sp. passiflorae EM MARACUJAZEIRO AMARELO

Cited by 11 publications

References 19 publications

REACTION OF PAPAYA GENOTYPES TO TARGET SPOT AND ACTIVITY OF PLANT EXTRACTS AND Bacillus spp. ON Corynespora cassiicola

REACTION OF PAPAYA GENOTYPES TO TARGET SPOT AND ACTIVITY OF PLANT EXTRACTS AND Bacillus spp. ON Corynespora cassiicola

Some Plants Showing Antagonism to Five Plant Pathogenic Fungi

CRESCIMENTO MICELIAL DE Stemphyllium SP. AGENTE ETIOLÓGICO DA QUEIMA DE ESTNFÍLIO NA CULTURA DA CEBOLA (Allium cepa) EM DIFERENTES MEIOS DE CULTURA

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