Estación Fitopatolóxica do Areeiro Web Site - www.efa-dip.org - Papers 2002

		UNIDAD ASOCIADA "SISTEMAS AGROFORESTALES": ESTACIÓN FITOPATOLÓXICA DO AREEIRO - MISIÓN BIOLÓGICA DE GALICIA

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	XIX Reunion Anual del Grupo de Trabajo Fitosanitario de Forestales, Parques y Jardines, Santander 2002

		Prospeccion de Bursaphelenchus xylophilus y su transmisor Monochamus spp. en la comunidad gallega durante el año 2002
		Muestreo en Viveros Ornamentales para deteccion de Phytopthora ramorum
		Pruebas de patogenicidad de tres especies de Armillaria sobre Pseudotsuga menziesii

	COST 838 meeting. Pisa, ITALY ,Octubre 2002
		Compared effects of fungicides and Glommus aggregatum on the white root rot caused by Armillaria mellea in grapevine rootstocks

	Fourth International Congress of Nematology, Tenerife 2002
		Survey of the pine wilt nematode and its vector insects in the autonomic community of Galicia, northwestern Spain.

	XI Congreso Sociedad Española de Fitopatología, Almería 2002
		Efecto de fungicidas, ensilado de soja y Glomus aggregatum en el control de Armillaria mellea en el patrón de vid 110 richter
		Ensayo de patogenicidad de tres especies de Armillaria sobre Pseudotsuga menziesii

	Grupo de Trabajo de Diagnóstico, La Palmas 2002
		Pruebas de patogenicidad de tres especies de Armillaria en Pseudotsuga menziensii
		Diferenciación de cepas hipovirulentas y virulentas de Cryphonectria parasitica
		Hongos lignicolas identificados en las demonimaciones de origen vitícolas gallegas
		Muestreo de Phytophthora ramorum en viveros ornamentales de Galicia
		Pseudomonas syringae van Hall causante de las manchas foliares en Crisantemo

COST 838 meeting. Pisa, ITALY ,Octubre 2002

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Compared effects of fungicides and Glomus aggregatum on the white root rot caused by Armillaria mellea in grapevine rootstocks

Mansilla J.P.¹², Vilariño A.³ and Sainz M.J.²
1 Estación Fitopatolóxica do Areeiro, Excma. Diputación Provincial de Pontevedra, Subida a la Robleda s/n, E-36153 Pontevedra, Spain
2 Departamento de Producción Vegetal, Universidad de Santiago de Compostela, Campus Universitario, E-27002 Lugo, Spain
3 Instituto de Investigaciones Agrobiológicas de Galicia, CSIC, POB 122, E-15780 Santiago de Compostela, Spain

ABSTRACT: Armillaria mellea is an aggresive pathogen for grapevine, causing a disease called white root rot. In field practice, the application of cubiet is advised when the first symtomatic plants are observed in infected vineyards, although the efficacy of this fungicide to actually control the disease is very low. A growth chamber experiment was designed to compare the effects of two fungicides, cubiet and cyproconazol, and the inoculation of Glomus aggregatum on the white root rot caused by A. mellea in three grapevine rootstocks, namely 196-17 Castel, 110 Richter and 161-49 Couderc. Previous in vitro studies had shown that cyproconazol had a fungicide effect on the growth of A. mellea mycelium. Cuttings of each rootstock were treated with IBA and inserted in two rooting beds of sand-vermiculite. One of the beds received and inoculum of G. aggregatum previously raised on Tagetes erecta. For the experiment, mycorrhizal and nonmycorrhizal well-rooted cuttings were transferred to 1.5 L pots (one cutting per pot) filled with an unsterilized soil. Half of the plants were inoculated with an isolate of A. mellea previously obtained from a field-infected grapevine. Two fungicides treatments, cubiet and cyproconazol, were established for rootstocks 196-17 Castel and 110 Richter. The rootstock 161-49 Couderc provided a lesser number of well-rooted cuttings and only the effects of the cyproconazol treatment were investigated.