Caracterización y Epidemiología de la Mancha Foliar (Cercospora sp) de la Lechuga Variedad Great Lakes en Lamas, San Martín

• Autor: Ismiño Riquelme, Armando Ghene
• Formato: tesis de grado
• Fecha de Publicación: 2011
• Institución: Universidad Nacional de San Martin - Tarapoto
• Repositorio: UNSM-Institucional
• Lenguaje: español
• OAI Identifier: oai:repositorio.unsm.edu.pe:11458/1199
• Enlace del recurso: http://hdl.handle.net/11458/1199
• Nivel de acceso: acceso abierto
• Materia: Great Lakes; Sintomatología; Agronómicas; Incidencia; Seberidad; Mancha Foliar; Patogenicidad; Caraterizacion; Fitopatógeno; Patógeno; Agente causal; Mancozeb; Metalaxil; Tiofanate; Metil; Thiram Hongo

The present work of investigation was carried out in the city of Lamas, in the horticultural farm house The Hope. The work was carried out in 2 stages: First it was realised in the field, where a pursuit to a parcel became of lettuce culture Great Lakes variety, this in order to evaluate the agronomic workings that realize, symptoms of the disease was described, collected the samples of ill plants, evaluated the incidence and severity of the disease of leaf spot, using the method of Stover modified by Gauhl and With the collected data of severity, the curve of progress of the disease was realised, using 3 mathematical models epidemiologists: Logistic, Monomolecular and Gompertz. The second stage was developed in the vegetal medical laboratory of the National University of San Martin - Tarapoto, where it evaluated the test of phatogenicid, characterization of the fitophatógen and test of poisoned food. The obtained results determined: the pathogen Cercospora longissima is the causal agent of leaf spot in the culture of Lettuce. The mathematical model of Gompertz described in graphical form the curve of progress of the disease and formulated products: Mancozeb + Metalaxil 3g. /L., Tiofanate Metil + Thiram 3g. /L., Mancozeb + Metalaxil 2g. /L., they reduced to the growth and development of the fungus in laboratory.