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- Title
Efecto de la materia orgánica y la capacidad de intercambio catiónico en la acidez de suelos cultivados con maíz en dos regiones de Chiapas, México.
- Authors
Cruz-Macías, Wel Olveín; Rodríguez-Larramendi, Luis Alfredo; Salas-Marina, Miguel Ángel; Hernández-García, Vidal; Campos-Saldaña, Rady Alejandra; Chávez-Hernández, Moisés Hussein; Gordillo-Curiel, Alder
- Abstract
One third of the world’s soils are acidic, under these conditions many crops are affected, especially when aluminum concentrations reach toxic levels. In order to establish the relationships between acidity indicators and cation exchange capacity, and pH and organic matter content, 13 sites were selected in Frailesca and Valles Zoque regions. Five sub-samples were collected at a depth of 0.30 m, in order to form a homogeneous sample per experimental site. Determination of pH, interchangeable cations, cation exchange capacity, organic matter content, and aluminium (Al3+) and hydrogen (H+ ) saturation was performed. The saturation percentage of Al3+ was exponentially correlated with increases in CIC, pH and calcium (Ca2+) saturation %; however, in regard to organic matter, Al3+ saturation adjusted signif icantly to a second order polynomial model, indicating a maximum saturation at values of 4.14% of organic matter. The percentage of H+ saturation adjusted negatively to an exponential function, decreasing at organic matter values higher than 2%. It is concluded that in the soils of Frailesca region, there is an acidif ication process that could lead to toxic increases of aluminum for corn culture, especially at pH values lower than f ive.
- Publication
Terra Latinoamericana, 2020, Vol 38, Issue 3, p475
- ISSN
0187-5779
- Publication type
Article
- DOI
10.28940/terra.v38i3.506