Diminishing crop yields in the Western Highlands of Cameroon is largely attributed to soil acidity. Soil characterization was carried out on six highly weathered soils developed from pyroxene-rich basalt in the North-West Region (NWR) of Cameroon to evaluate their use potential for agricultural production. These soils are acidic in nature, and have high exchangeable Al contents. Clay contents are high and CEC is low. The organic matter contents are moderately high and decrease with depth and act as sinks for exchangeable Al as indicated by the high correlation between them. The high amounts of sesquioxide coatings in the subsurface B horizons may be reducing the amount of extracted Al leading to low exchangeable Al in these horizons. Correlative statistical relationships were established among soil properties including clay percent, exchangeable Al, CEC, organic carbon content, pH-KCl and pH-water. Regression equations established between exchangeable Al and pH-H₂O and exchangeable Al and pH-KCl were best described by quadratic models.

Based on the correlation that exists between exchangeable Al and pH-KCl, these equations can be used to estimate the lime requirements of these soils after transformations based on the neutralization index proposed in this study. Regression relationships so established constitute useful predictive indices for estimating agronomic properties from existing physical and chemical data and soil survey reports. Grouping of soils with similar characteristics would produce correlative equations that give more reliable predictive results.

喀麦隆西部高原的农作物减产主要归因于土壤酸度。对喀麦隆西北地区富含辉石的玄武岩开发的六种高度风化土壤进行了土壤表征，以评估其在农业生产中的应用潜力。这些土壤本质上是酸性的，并且具有高的可交换铝含量。粘土含量高而CEC低。有机物含量适中较高，并随深度而降低，并作为可交换Al的汇，如它们之间的高度相关性所示。在地下B层中大量的倍半氧化物涂层可能正在减少提取的Al的量，导致这些层中可交换的Al低。建立了土壤特性之间的相关统计关系，包括粘土百分比，可交换的Al，CEC，有机碳含量，pH-KCl和pH-水。在可交换Al和pH-H之间建立回归方程二次模型最好地描述了₂ O和可交换的Al和pH-KCl。

基于可交换的Al和pH-KCl之间存在的相关性，这些方程可用于根据本研究提出的中和指数估算转化后这些土壤的石灰需求。如此建立的回归关系构成了有用的预测指标，可用于根据现有的理化数据和土壤调查报告估算农艺特性。具有相似特征的土壤分组会产生相关方程，从而给出更可靠的预测结果。