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Hojarasca e inóculo de Mycena citricolor sobre la epidemia de ojo de gallo

Authors: Natalia Ureña; Sebastián Castro-Tanzi; Felipe Arauz-Cavallini; Jacques Avelino; María Del Milagro Granados-Montero;

Hojarasca e inóculo de Mycena citricolor sobre la epidemia de ojo de gallo

Abstract

Introducción. El ojo de gallo causado por Mycena citricolor está entre las principales enfermedades del cafeto en Costa Rica. Se presentan ataques cíclicos, aproximadamente cada catorce años, relacionados con el aumento de las precipitaciones y el inóculo. Objetivo. Determinar el impacto de la hojarasca y del inóculo primario sobre la epidemiología de esta enfermedad. Materiales y métodos. En cafetales ubicados en la región cafetalera de Tarrazú, Costa Rica, se valoró el efecto de la eliminación manual de las hojas enfermas adheridas a la planta y de la capa de hojas caídas, sobre la epidemia de ojo de gallo en los años 2013 y 2014. Se evaluaron 1200 bandolas en un experimento de parcelas divididas, donde los cuatro tratamientos se obtuvieron por la combinación de los niveles “con y sin” para cada factor. Se describió la enfermedad mediante la cuantificación del número de hojas enfermas, lesiones y geminíferos. Se construyeron las curvas de desarrollo de la enfermedad y se calculó el área bajo la curva para cada variable. Se calculó el crecimiento y defoliación de las plantas de café. Resultados. Con base en la curva de incidencia de la enfermedad para cada tratamiento en cada año, se determinó que el crecimiento logístico de las epidemias es el modelo de mejor ajuste. Las tasas de infección aparente (r) fueron cercanas a 0,04 unidades por día en 2013 y no hubo diferencia estadística significativa en las epidemias desarrolladas; pero sí para el 2014, donde variaron entre 0,03 y 0,05. Se observó un efecto principal del factor inóculo inicial sobre la presencia o ausencia de hojarasca. Conclusión. La hojarasca no tuvo efecto significativo en el desarrollo de la epidemia de ojo de gallo. Esta es la primera investigación que determina el impacto de posibles fuentes de inóculo distintas a las lesiones presentes en hojas de café.

Country
France
Keywords

litière végétale, Agaricomycetes, maladie foliaire, [SDV]Life Sciences [q-bio], http://aims.fao.org/aos/agrovoc/c_1920, http://aims.fao.org/aos/agrovoc/c_24064, maladie fongique, incidencia, http://aims.fao.org/aos/agrovoc/c_11042, http://aims.fao.org/aos/agrovoc/c_5962, fungal diseases, http://aims.fao.org/aos/agrovoc/c_12119, Plant pathology, Fungal diseases, http://aims.fao.org/aos/agrovoc/c_1721, H20 - Maladies des plantes, enfermedades fungosas, plant pathology, http://aims.fao.org/aos/agrovoc/c_25240, S, Incidence, Agriculture, Coffea arabica, fitopatología, maladie des plantes, tache foliaire, incidence

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
10
Top 10%
Average
Top 10%
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