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Characters of compost teas from different sources and their suppressive effect on fungal phytopathogens.

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Title: Characters of compost teas from different sources and their suppressive effect on fungal phytopathogens.
Authors: Marín, Francisco1, Santos, Mila1 msantos@ual.es, Diánez, Fernando1, Carretero, Francisco1, Gea, Francisco2, Yau, José3, Navarro, María2
Source: World Journal of Microbiology & Biotechnology. Aug2013, Vol. 29 Issue 8, p1371-1382. 12p.
Subjects: Compost tea, Phytopathogenic fungi, Podosphaera, Fertilization (Biology), Dilution, Microbiology
Abstract: Compost teas (CT) are fermented watery extracts of composted materials that are used to control plant diseases and on crop fertilization. In this work, aerated (ACT) and non-aerated compost teas (NCT) were obtained from four different composts: spent mushroom substrate compost, grape marc compost, greenhouse horticultural crop residues compost, and vermicompost. Physico-chemical and microbiological analysis were carried out to determine their properties. In vitro assays were performed to assess their suppressive effect on the mycelial growth of eight fungal phytopathogens. In vivo trials aimed to assess their effect on gummy stem blight ( Didymella bryonae) and powdery mildew ( Podosphaera fusca) in melon plants. Results showed that ACT and NCT filtrates inhibited the in vitro growth of all tested pathogens while autoclaved CT did not completely lose their inhibitory effect, and CT sterilized by microfiltration had no effect on the pathogen growth. The severity of powdery mildew was highly reduced by ACT and NCT from all sources, though in gummy stem blight assay only a delay in disease development was observed. In general, all compost teas showed a high level of microbial populations and nutrients. Results suggest that the efficacy of ACT and NCT firstly depend on the microbiota present in them. We consider compost teas from the four tested sources as a viable way to manage plant diseases and crop fertilization, throughout its integration in pest management programs and fertirrigation systems under different dilution rates. [ABSTRACT FROM AUTHOR]
Copyright of World Journal of Microbiology & Biotechnology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Characters of compost teas from different sources and their suppressive effect on fungal phytopathogens.
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  Data: <searchLink fieldCode="AR" term="%22Marín%2C+Francisco%22">Marín, Francisco</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Santos%2C+Mila%22">Santos, Mila</searchLink><relatesTo>1</relatesTo><i> msantos@ual.es</i><br /><searchLink fieldCode="AR" term="%22Diánez%2C+Fernando%22">Diánez, Fernando</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Carretero%2C+Francisco%22">Carretero, Francisco</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Gea%2C+Francisco%22">Gea, Francisco</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Yau%2C+José%22">Yau, José</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Navarro%2C+María%22">Navarro, María</searchLink><relatesTo>2</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22World+Journal+of+Microbiology+%26+Biotechnology%22">World Journal of Microbiology & Biotechnology</searchLink>. Aug2013, Vol. 29 Issue 8, p1371-1382. 12p.
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  Data: <searchLink fieldCode="DE" term="%22Compost+tea%22">Compost tea</searchLink><br /><searchLink fieldCode="DE" term="%22Phytopathogenic+fungi%22">Phytopathogenic fungi</searchLink><br /><searchLink fieldCode="DE" term="%22Podosphaera%22">Podosphaera</searchLink><br /><searchLink fieldCode="DE" term="%22Fertilization+%28Biology%29%22">Fertilization (Biology)</searchLink><br /><searchLink fieldCode="DE" term="%22Dilution%22">Dilution</searchLink><br /><searchLink fieldCode="DE" term="%22Microbiology%22">Microbiology</searchLink>
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  Data: Compost teas (CT) are fermented watery extracts of composted materials that are used to control plant diseases and on crop fertilization. In this work, aerated (ACT) and non-aerated compost teas (NCT) were obtained from four different composts: spent mushroom substrate compost, grape marc compost, greenhouse horticultural crop residues compost, and vermicompost. Physico-chemical and microbiological analysis were carried out to determine their properties. In vitro assays were performed to assess their suppressive effect on the mycelial growth of eight fungal phytopathogens. In vivo trials aimed to assess their effect on gummy stem blight ( Didymella bryonae) and powdery mildew ( Podosphaera fusca) in melon plants. Results showed that ACT and NCT filtrates inhibited the in vitro growth of all tested pathogens while autoclaved CT did not completely lose their inhibitory effect, and CT sterilized by microfiltration had no effect on the pathogen growth. The severity of powdery mildew was highly reduced by ACT and NCT from all sources, though in gummy stem blight assay only a delay in disease development was observed. In general, all compost teas showed a high level of microbial populations and nutrients. Results suggest that the efficacy of ACT and NCT firstly depend on the microbiota present in them. We consider compost teas from the four tested sources as a viable way to manage plant diseases and crop fertilization, throughout its integration in pest management programs and fertirrigation systems under different dilution rates. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of World Journal of Microbiology & Biotechnology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s11274-013-1300-x
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        Type: general
      – SubjectFull: Phytopathogenic fungi
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      – SubjectFull: Podosphaera
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      – SubjectFull: Dilution
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      – TitleFull: Characters of compost teas from different sources and their suppressive effect on fungal phytopathogens.
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              Text: Aug2013
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