Effect of Trichoderma spp. isolates for biological control of tan spot of wheat caused by Pyrenophora tritici-repentis under field conditions in Argentina

Trichoderma spp. have been used as biocontrol agents to protect plants against foliar diseases in several crops, but information from field assays is scarce. In the present work, experiments were carried out to determine the effect of six isolates of Trichoderma harzianum...

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Detalles Bibliográficos
Autores principales:	Perelló, Analía Edith, Moreno, María Virginia, Mónaco, Cecilia Inés, Simón, María Rosa
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2008
Materias:	Ciencias Agrarias Wheat Biocontrol Trichoderma Tan spot Drechslera tritici-repentis Pyrenophora tritici-repentis
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/132024
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-132024
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Ciencias Agrarias Wheat Biocontrol Trichoderma Tan spot Drechslera tritici-repentis Pyrenophora tritici-repentis
spellingShingle	Ciencias Agrarias Wheat Biocontrol Trichoderma Tan spot Drechslera tritici-repentis Pyrenophora tritici-repentis Perelló, Analía Edith Moreno, María Virginia Mónaco, Cecilia Inés Simón, María Rosa Effect of <i>Trichoderma</i> spp. isolates for biological control of tan spot of wheat caused by <i>Pyrenophora tritici-repentis</i> under field conditions in Argentina
topic_facet	Ciencias Agrarias Wheat Biocontrol Trichoderma Tan spot Drechslera tritici-repentis Pyrenophora tritici-repentis
description	<i>Trichoderma</i> spp. have been used as biocontrol agents to protect plants against foliar diseases in several crops, but information from field assays is scarce. In the present work, experiments were carried out to determine the effect of six isolates of <i>Trichoderma harzianum</i> and one isolate of <i>T. koningii</i> on the incidence and severity of tan spot, caused by <i>Pyrenophora tritici-repentis</i> (anamorph: <i>Drechslera tritici-repentis</i>) under field conditions. Significant differences between years, wheat cultivars and treatments were found. In 2003, two of the isolates assayed (T5, T7) showed the best performance against the disease applied as seed treatments or sprayed onto wheat leaves at different stages. The application of six of the treatments on wheat plants significantly reduced disease severity by 16 to 35% in comparison with the control. Disease control provided by isolate T7 was similar to that provided by the fungicide treatment (56% reduction). This is the first report on the efficacy of <i>Trichoderma</i> spp. against tan spot under field conditions in Argentina.
format	Articulo Articulo
author	Perelló, Analía Edith Moreno, María Virginia Mónaco, Cecilia Inés Simón, María Rosa
author_facet	Perelló, Analía Edith Moreno, María Virginia Mónaco, Cecilia Inés Simón, María Rosa
author_sort	Perelló, Analía Edith
title	Effect of <i>Trichoderma</i> spp. isolates for biological control of tan spot of wheat caused by <i>Pyrenophora tritici-repentis</i> under field conditions in Argentina
title_short	Effect of <i>Trichoderma</i> spp. isolates for biological control of tan spot of wheat caused by <i>Pyrenophora tritici-repentis</i> under field conditions in Argentina
title_full	Effect of <i>Trichoderma</i> spp. isolates for biological control of tan spot of wheat caused by <i>Pyrenophora tritici-repentis</i> under field conditions in Argentina
title_fullStr	Effect of <i>Trichoderma</i> spp. isolates for biological control of tan spot of wheat caused by <i>Pyrenophora tritici-repentis</i> under field conditions in Argentina
title_full_unstemmed	Effect of <i>Trichoderma</i> spp. isolates for biological control of tan spot of wheat caused by <i>Pyrenophora tritici-repentis</i> under field conditions in Argentina
title_sort	effect of <i>trichoderma</i> spp. isolates for biological control of tan spot of wheat caused by <i>pyrenophora tritici-repentis</i> under field conditions in argentina
publishDate	2008
url	http://sedici.unlp.edu.ar/handle/10915/132024
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Effect of <i>Trichoderma</i> spp. isolates for biological control of tan spot of wheat caused by <i>Pyrenophora tritici-repentis</i> under field conditions in Argentina

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