“Diagnostico del agente causal de la podredumbre de raíces de la vid ( vitis labrusca L.) y su control”

• Autor: Uriarte Vásquez, Williams
• Formato: tesis de grado
• Fecha de Publicación: 2015
• Institución: Universidad Nacional de San Martin - Tarapoto
• Repositorio: UNSM-Institucional
• Lenguaje: español
• OAI Identifier: oai:repositorio.unsm.edu.pe:11458/552
• Enlace del recurso: http://hdl.handle.net/11458/552
• Nivel de acceso: acceso abierto
• Materia: Diagnostico; agente; causal; podredumbre; raíces; vid; vitis; labrusca; control

In order to díagnose the causative agents of root rot Vitis labrusca L. and dísease management carried out the research work in the laboratory of Plant Protection - Plant Pathology, Faculty of Agricultura! Sciences of the Natíonal University of San Martín of San Roque Cumbaza in the regíon of San Martín. Descriptive and quantitative method was used; lt was conducted under completely randomízed design; evaluating symptoms , morphological and biometric characteristics of the isolates, pathogenicity test , chemical and biological control , íncídence , losses and cultural practices. As results have been diagnosed Lasiodiplodia parva is the cause of dry charcoal rot roots and stem, while wet causes oligandrum Pythium root rot. Fungicides 100% inhibited the growth of L. parva are : Benomyl 50 % Metalaxyl 8% + Mancozeb 64% and 50 % Thiophanate methyl + Thiram 30 % and Pythium oligandrum . Metalaxyl 8% + Mancozeb 64% and 50 % Thiophanate methyl + Thiram 30 %. While strains of Trichoderma ssp. they controlled and L. parva P. oligandrum by mycoparasitism . The disease incidence was 23.91 %, with losses 1673.63. Key words: Trichoderma, disease of grape, root rot 90