BENTAZON-MCPA EFFECT ON Fusarium oxysporum ROOT ROT ON Trifolium pratense IN GREENHOUSE CONDITIONS

In Chile, the main factor in red clover {Trifolium pretense L.) stand decline is fusarium-root rot, which results in a reduction in yield. Fusarium oxysporum (Schlect.) is the most prevalent pathogen recovered from diseased red clover roots plants. Agronomical management of red clover includes appli...

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Autores principales: Ceballos,Ricardo, Cofre,Ximena, Quiroz,Andrés, Espinoza,Nelson, Palma,Graciela
Lenguaje:English
Publicado: Sociedad Chilena de la Ciencia del Suelo 2009
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Acceso en línea:http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912009000200006
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spelling oai:scielo:S0718-279120090002000062009-09-09BENTAZON-MCPA EFFECT ON Fusarium oxysporum ROOT ROT ON Trifolium pratense IN GREENHOUSE CONDITIONSCeballos,RicardoCofre,XimenaQuiroz,AndrésEspinoza,NelsonPalma,Graciela herbicide fusariosis legume plant diseases In Chile, the main factor in red clover {Trifolium pretense L.) stand decline is fusarium-root rot, which results in a reduction in yield. Fusarium oxysporum (Schlect.) is the most prevalent pathogen recovered from diseased red clover roots plants. Agronomical management of red clover includes application of broadleaf herbicides such as MCPA and bentazon. This study was conducted to evaluate the effects of bentazon and bentazon/MCPA mixture on phytotoxicity and root rot as caused by F. oxysporum on red clover, under greenhouse conditions. In addition, in vitro mycelial growth and conidial germination of F. oxysporum was studied. A reduction of 40% in crown diameter and 57% shoot dry weight was observed 30 days after treatment with a high rate of bentazon/MCPA and F. oxysporum inoculum. The bentazon - F. oxysporum interaction reduced root dry weight by 57% at IX rate and 42% with 2X rate at 20 and 30 of evaluation. Bentazon caused a significant increase in phytotoxicity at the high rate and the mixture bentazon/MCPA increased root rot severity and phytotoxicity at the high rate. The conidial germination and mycelial growth were significantly reduced by bentazon/MCPA. These results suggest that red clover growth and persistence could be adversely affected by F. oxysporum after bentazon and bentazon/MCPA application.info:eu-repo/semantics/openAccessSociedad Chilena de la Ciencia del SueloRevista de la ciencia del suelo y nutrición vegetal v.9 n.2 20092009-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912009000200006en10.4067/S0718-27912009000200006
institution Scielo Chile
collection Scielo Chile
language English
topic herbicide
fusariosis
legume
plant diseases
spellingShingle herbicide
fusariosis
legume
plant diseases
Ceballos,Ricardo
Cofre,Ximena
Quiroz,Andrés
Espinoza,Nelson
Palma,Graciela
BENTAZON-MCPA EFFECT ON Fusarium oxysporum ROOT ROT ON Trifolium pratense IN GREENHOUSE CONDITIONS
description In Chile, the main factor in red clover {Trifolium pretense L.) stand decline is fusarium-root rot, which results in a reduction in yield. Fusarium oxysporum (Schlect.) is the most prevalent pathogen recovered from diseased red clover roots plants. Agronomical management of red clover includes application of broadleaf herbicides such as MCPA and bentazon. This study was conducted to evaluate the effects of bentazon and bentazon/MCPA mixture on phytotoxicity and root rot as caused by F. oxysporum on red clover, under greenhouse conditions. In addition, in vitro mycelial growth and conidial germination of F. oxysporum was studied. A reduction of 40% in crown diameter and 57% shoot dry weight was observed 30 days after treatment with a high rate of bentazon/MCPA and F. oxysporum inoculum. The bentazon - F. oxysporum interaction reduced root dry weight by 57% at IX rate and 42% with 2X rate at 20 and 30 of evaluation. Bentazon caused a significant increase in phytotoxicity at the high rate and the mixture bentazon/MCPA increased root rot severity and phytotoxicity at the high rate. The conidial germination and mycelial growth were significantly reduced by bentazon/MCPA. These results suggest that red clover growth and persistence could be adversely affected by F. oxysporum after bentazon and bentazon/MCPA application.
author Ceballos,Ricardo
Cofre,Ximena
Quiroz,Andrés
Espinoza,Nelson
Palma,Graciela
author_facet Ceballos,Ricardo
Cofre,Ximena
Quiroz,Andrés
Espinoza,Nelson
Palma,Graciela
author_sort Ceballos,Ricardo
title BENTAZON-MCPA EFFECT ON Fusarium oxysporum ROOT ROT ON Trifolium pratense IN GREENHOUSE CONDITIONS
title_short BENTAZON-MCPA EFFECT ON Fusarium oxysporum ROOT ROT ON Trifolium pratense IN GREENHOUSE CONDITIONS
title_full BENTAZON-MCPA EFFECT ON Fusarium oxysporum ROOT ROT ON Trifolium pratense IN GREENHOUSE CONDITIONS
title_fullStr BENTAZON-MCPA EFFECT ON Fusarium oxysporum ROOT ROT ON Trifolium pratense IN GREENHOUSE CONDITIONS
title_full_unstemmed BENTAZON-MCPA EFFECT ON Fusarium oxysporum ROOT ROT ON Trifolium pratense IN GREENHOUSE CONDITIONS
title_sort bentazon-mcpa effect on fusarium oxysporum root rot on trifolium pratense in greenhouse conditions
publisher Sociedad Chilena de la Ciencia del Suelo
publishDate 2009
url http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912009000200006
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