Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/29183
Título : Interaction between potassium (K) and calcium (Ca) on the severity of Yellow Sigatoka in banana plants
Autor: Freitas, Aurivan Soares de
Pozza, Edson Ampélio
Pozza, Adélia Aziz A.
Soares, Maria Gilmara de O.
Silva, Humberson Rocha
Pérez, Cristian D. Plaza
Palavras-chave: Hydroponics
Musa spp.
Nutritional imbalance
Pseudocercospora musae
Publicador: Academic Journals
Data da publicação: Abr-2017
Referência: FREITAS, A. S. de F. et al. Interaction between potassium (K) and calcium (Ca) on the severity of Yellow Sigatoka in banana plants. African Journal of Agricultural Research, [S. l.], v. 12, n. 16, p. 1353-1361, Apr. 2017.
Abstract: The main control measure of Yellow Sigatoka (Pseudocercospora musae) in banana plants (Musa spp.) has been the planting of resistant varieties, and fungicide application. However, the use of adequately nourished plants is also emphasized as a complementary control method. This study evaluated the influence of interaction between potassium (K) and calcium (Ca) in nutrient solution on the severity of Yellow Sigatoka in banana. Evaluation included severity of disease, chlorophyll a and b contents, nutrient contents, and total dry weight (TDW). There was no interaction between concentrations of K and Ca for area under the disease severity progress curve (AUDSPC), although the AUDSPC increased in leaves 1 and 2 with increasing concentrations of K from 1 to 6 mmol L-1. Increasing K led to a reduction in chlorophyll a and b contents, and in nutrients N, P, Mg, B, Cu, Zn, and Mn. TDW increased with increasing K. Therefore, high concentration of K causes nutritional imbalance in banana plants, and favors the severity of Yellow Sigatoka.
URI: http://repositorio.ufla.br/jspui/handle/1/29183
Idioma: en_US
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