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Physiological indices and chlorophyll in “Palmer” mango submitted to sources of potassium

Índices fisiológicos e clorofila em mangueira “Palmer” submetida a fontes de potássio



How to Cite
Alves Santana, E., Francismar de Medeiros, J., Lucena Cavalcante, Ítalo H., & Teixeira Lobo, J. (2023). Physiological indices and chlorophyll in “Palmer” mango submitted to sources of potassium. Sour Topics, 27(2), 411-422. https://doi.org/10.21897/rta.v27i2.3113

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PlumX
Elisson Alves Santana
José Francismar de Medeiros
Ítalo Herbert Lucena Cavalcante
Jackson Teixeira Lobo

Grown in different regions of Brazil, mango is of great importance at the national level. However, mango cultivation is directly related to physiological factors such as photosynthesis, stomatal conductance and chlorophyll. Physiological factors are related to the nutritional balance of the plant. Among the nutrients, potassium (K) can be highlighted, which, despite not being a structural element for the plant, stimulates, or is part of several physiological plant processes. Therefore, an experiment was carried out with the purpose of evaluating, in the vegetative period of 'Palmer' mango, the effect of different sources of K to accelerate the maturation stage of mango branches and verify their influence on physiological indexes and chlorophyll. Treatments consisted of three ripeners and a control, which were applied directly to the branches and leaves of “Palmer” mango trees. The variables analyzed were chlorophyll A, B and Total indexes; Internal concentration of CO2; Stomatal conductance; transpiration rate; Net photosynthesis; Instantaneous Carboxylation Efficiency and Water Use Efficiency. After collecting, and analyzing the data, it was concluded that the vegetative period of the “Palmer” mango tree, in relation to the different evaluation dates, was not influenced by potassium sources. The use of T4 treatment (SpeedFol® induction mango) can provide a greater increment of chlorophyll A, B and Total than KCl and K2SO4.


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