Temporal analysis of charcoal root rot in forest nurseries under different pathogen inoculum densities and soil moisture content
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Tropical plant pathology (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1982-56762013000300001 |
Resumo: | The progress of charcoal root rot (CRR) disease in Pinus radiata seedlings caused by Macrophomina phaseolina was evaluated in greenhouse and field trials. In one greenhouse trial P. radiata was sown in a sandy soil with pathogen inoculum densities (ID) ranging from 25 to 1000 cfu.g-1. After two months, the seedlings were established under three soil moisture content (SMC) levels corresponding to 100%, 75% and 50% of field capacity (FC). In one field trial, P. radiata was sown on microplots infested with ID of 50 to 250 cfu.g-1. In the greenhouse trial the disease incidence was related with the pathogen ID and SMC. At 100% FC, the seedlings remained asymptomatic until the experiment ended, however M. phaseolina was able to infect the roots. In the field trial, the disease progress curves were similar to those of the greenhouse trial in response to ID and SMC but the plant mortality due to CRR incidence did not exceed 50%. The monomolecular model was the one that best fitted the disease progress curve data for both trials and most treatments. Knowledge of the existing ID of M. phaseolina in the soil, combined with information on SMC, may be important for predicting CRR epidemics in P. radiata nurseries. |
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Temporal analysis of charcoal root rot in forest nurseries under different pathogen inoculum densities and soil moisture contentMacrophomina phaseolinaPinus radiataepidemiologyThe progress of charcoal root rot (CRR) disease in Pinus radiata seedlings caused by Macrophomina phaseolina was evaluated in greenhouse and field trials. In one greenhouse trial P. radiata was sown in a sandy soil with pathogen inoculum densities (ID) ranging from 25 to 1000 cfu.g-1. After two months, the seedlings were established under three soil moisture content (SMC) levels corresponding to 100%, 75% and 50% of field capacity (FC). In one field trial, P. radiata was sown on microplots infested with ID of 50 to 250 cfu.g-1. In the greenhouse trial the disease incidence was related with the pathogen ID and SMC. At 100% FC, the seedlings remained asymptomatic until the experiment ended, however M. phaseolina was able to infect the roots. In the field trial, the disease progress curves were similar to those of the greenhouse trial in response to ID and SMC but the plant mortality due to CRR incidence did not exceed 50%. The monomolecular model was the one that best fitted the disease progress curve data for both trials and most treatments. Knowledge of the existing ID of M. phaseolina in the soil, combined with information on SMC, may be important for predicting CRR epidemics in P. radiata nurseries.Sociedade Brasileira de Fitopatologia2013-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1982-56762013000300001Tropical Plant Pathology v.38 n.3 2013reponame:Tropical plant pathology (Online)instname:Sociedade Brasileira de Fitopatologiainstacron:SBF10.1590/S1982-56762013005000001info:eu-repo/semantics/openAccessArias,Sandra GacitúaPons,Rafael RubilarVon Stowasser,Eugenio Sanfuenteseng2013-06-24T00:00:00Zoai:scielo:S1982-56762013000300001Revistahttps://www.scielo.br/j/tpp/ONGhttps://old.scielo.br/oai/scielo-oai.phpsbf-revista@ufla.br1983-20521982-5676opendoar:2013-06-24T00:00Tropical plant pathology (Online) - Sociedade Brasileira de Fitopatologiafalse |
dc.title.none.fl_str_mv |
Temporal analysis of charcoal root rot in forest nurseries under different pathogen inoculum densities and soil moisture content |
title |
Temporal analysis of charcoal root rot in forest nurseries under different pathogen inoculum densities and soil moisture content |
spellingShingle |
Temporal analysis of charcoal root rot in forest nurseries under different pathogen inoculum densities and soil moisture content Arias,Sandra Gacitúa Macrophomina phaseolina Pinus radiata epidemiology |
title_short |
Temporal analysis of charcoal root rot in forest nurseries under different pathogen inoculum densities and soil moisture content |
title_full |
Temporal analysis of charcoal root rot in forest nurseries under different pathogen inoculum densities and soil moisture content |
title_fullStr |
Temporal analysis of charcoal root rot in forest nurseries under different pathogen inoculum densities and soil moisture content |
title_full_unstemmed |
Temporal analysis of charcoal root rot in forest nurseries under different pathogen inoculum densities and soil moisture content |
title_sort |
Temporal analysis of charcoal root rot in forest nurseries under different pathogen inoculum densities and soil moisture content |
author |
Arias,Sandra Gacitúa |
author_facet |
Arias,Sandra Gacitúa Pons,Rafael Rubilar Von Stowasser,Eugenio Sanfuentes |
author_role |
author |
author2 |
Pons,Rafael Rubilar Von Stowasser,Eugenio Sanfuentes |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Arias,Sandra Gacitúa Pons,Rafael Rubilar Von Stowasser,Eugenio Sanfuentes |
dc.subject.por.fl_str_mv |
Macrophomina phaseolina Pinus radiata epidemiology |
topic |
Macrophomina phaseolina Pinus radiata epidemiology |
description |
The progress of charcoal root rot (CRR) disease in Pinus radiata seedlings caused by Macrophomina phaseolina was evaluated in greenhouse and field trials. In one greenhouse trial P. radiata was sown in a sandy soil with pathogen inoculum densities (ID) ranging from 25 to 1000 cfu.g-1. After two months, the seedlings were established under three soil moisture content (SMC) levels corresponding to 100%, 75% and 50% of field capacity (FC). In one field trial, P. radiata was sown on microplots infested with ID of 50 to 250 cfu.g-1. In the greenhouse trial the disease incidence was related with the pathogen ID and SMC. At 100% FC, the seedlings remained asymptomatic until the experiment ended, however M. phaseolina was able to infect the roots. In the field trial, the disease progress curves were similar to those of the greenhouse trial in response to ID and SMC but the plant mortality due to CRR incidence did not exceed 50%. The monomolecular model was the one that best fitted the disease progress curve data for both trials and most treatments. Knowledge of the existing ID of M. phaseolina in the soil, combined with information on SMC, may be important for predicting CRR epidemics in P. radiata nurseries. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-06-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1982-56762013000300001 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1982-56762013000300001 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1982-56762013005000001 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Fitopatologia |
publisher.none.fl_str_mv |
Sociedade Brasileira de Fitopatologia |
dc.source.none.fl_str_mv |
Tropical Plant Pathology v.38 n.3 2013 reponame:Tropical plant pathology (Online) instname:Sociedade Brasileira de Fitopatologia instacron:SBF |
instname_str |
Sociedade Brasileira de Fitopatologia |
instacron_str |
SBF |
institution |
SBF |
reponame_str |
Tropical plant pathology (Online) |
collection |
Tropical plant pathology (Online) |
repository.name.fl_str_mv |
Tropical plant pathology (Online) - Sociedade Brasileira de Fitopatologia |
repository.mail.fl_str_mv |
sbf-revista@ufla.br |
_version_ |
1754824586292101120 |