New methods for estimating lime requirement to attain desirable pH values in Brazilian soils
Welldy Gonçalves Teixeira, Víctor Hugo Álvarez V., Júlio César Lima Neves
Abstract
In Brazil, empirical models are traditionally used to determine lime requirement (LR), but their reliability is doubtful in most cases, since they can lead to under- or overestimation of LR for different soil types. In this study, the most critical characteristics influencing LR were selected to develop reliable models for predicting LR that raise soil pH to optimum values for crop production in Brazil. Soil samples (n = 22) with varying proportions of clay (5-88 %) and organic matter [...]
Topics & Concepts
LimeSoil waterEnvironmental scienceSoil scienceOrganic matterSoil pHSoil organic matterSoil testMathematicsGeologyChemistryOrganic chemistryPaleontologySoil Management and Crop YieldClay minerals and soil interactionsSoil and Unsaturated Flow