Métodos de recomendação de necessidade de calagem: revisão comparativa dos métodos e dos parâmetros empregados

Abstract

Soil acidity is one of the main limiting factors for agricultural productivity, especially in tropical and subtropical regions, where intense weathering and high rainfall promote base leaching and increase potential acidity. In this context, liming represents the main practice for soil acidity correction, being essential to improve nutrient availability and crop development. Given the diversity of existing methods to estimate lime requirement, this study aimed to carry out a comparative bibliographic review of lime requirement recommendation methods and the parameters used in their calculations, highlighting their conceptual bases, advantages, and limitations. The methodology consisted of a literature review, with the selection of scientific articles, books, and technical bulletins of recognized relevance and frequently cited in specialized literature, including both classical and recent studies on the subject. Among the main references analyzed are the works of Raij et al., Quaggio, Sanchez, Campanharo et al., Sousa et al., Primavesi et al., and Silva, which address methods such as base saturation increase, aluminum neutralization, and the use of buffer solutions. The results of the review indicate that the choice of recommendation method significantly influences the lime rates applied and should consider soil chemical characteristics, management system, and production goals. Thus, this study reinforces the importance of correctly selecting the liming method as an essential tool for the efficient and sustainable use of agricultural soils