Utilización de microorganismos antagonistas para el control de enfermedades de plantas: factores que influyen sobre la eficacia de biocontrol

• Autores: Rafael Manuel Jiménez Díaz
• Localización: Phytoma España: La revista profesional de sanidad vegetal, ISSN 1131-8988, Nº 144, 2002, págs. 82-85
• Idioma: español
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• Resumen

  • Biological control by means of microbial agents is one of the preferred plant disease control strategies to satisfy current social demands of healthy foods and environmental quality in agricultural production. However, biocontrol of plant diseases is still confronted with user's perception of variability and inconsistency of results. Variability and inconsistency of plant disease biocontrol are consequences of the complex pathogen-plant-microbial agent(s) interactions and of factors influencing these interactions. Soil characteristics such as soil temperature, pH, texture and chemical composition, as well as pathoystem components such as inoculum density and virulence, and host plant genotype are important factors influencing efficacy of plant disease biocontrol. As a consequence, the development of effective strategies for plant disease biocontrol requires that those factors are considered critically, and that biocontrol be conceived as a component of integrated disease management programs. The use of stability analyses for assessing efficacy of biocontrol, and of models relating pathogen inoculum and dose of the microbial agent, are suggested as a mean of enhancing applicability of plant disease biocontrol and improving confidence of users on its efficacy.