Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/29396
Título: Combined effects of soil biotic and abiotic factors, influenced by sewage sludge incorporation, on the incidence of corn stalk rot
Palavras-chave: Corn stalk rot
Corn - Fertilization
Soil - Sewage sludge
Podridão do caule de milho
Milho - Fertilização
Solo - Lama de esgoto
Data do documento: 2016
Editor: PLoS ONE
Citação: GHINI, R. et al. Combined effects of soil biotic and abiotic factors, influenced by sewage sludge incorporation, on the incidence of corn stalk rot. PLoS ONE, [S.l], v. 11, n. 5, p. 1-17, 2016. doi: https://doi.org/10.1371/journal.pone.0155536.
Resumo: The objectives of this study were to evaluate the combined effects of soil biotic and abiotic factors on the incidence of Fusarium corn stalk rot, during four annual incorporations of two types of sewage sludge into soil in a 5-years field assay under tropical conditions and to predict the effects of these variables on the disease. For each type of sewage sludge, the following treatments were included: control with mineral fertilization recommended for corn; control without fertilization; sewage sludge based on the nitrogen concentration that provided the same amount of nitrogen as in the mineral fertilizer treatment; and sewage sludge that provided two, four and eight times the nitrogen concentration recommended for corn. Increasing dosages of both types of sewage sludge incorporated into soil resulted in increased corn stalk rot incidence, being negatively correlated with corn yield. A global analysis highlighted the effect of the year of the experiment, followed by the sewage sludge dosages. The type of sewage sludge did not affect the disease incidence. A multiple logistic model using a stepwise procedure was fitted based on the selection of a model that included the three explanatory parameters for disease incidence: electrical conductivity, magnesium and Fusarium population. In the selected model, the probability of higher disease incidence increased with an increase of these three explanatory parameters. When the explanatory parameters were compared, electrical conductivity presented a dominant effect and was the main variable to predict the probability distribution curves of Fusarium corn stalk rot, after sewage sludge application into the soil.
URI: http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0155536
http://repositorio.ufla.br/jspui/handle/1/29396
Aparece nas coleções:DCS - Artigos publicados em periódicos

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