Name
Description
Soil pH is a measurement of the acidity or alkalinity of a soil, and it is an important soil property governing many biological, physical, and chemical processes, such as nutrient availability. Acidic pH levels (pH7.3) can lead to micronutrient (zinc, iron, copper) and phosphorus deficiencies. The “sweet” spot for most crops is in the neutral pH region (pH= 6 to 7). Representative pH values were compiled from the SSURGO database, and modified pH ranges from the NRCS Field Book for Describing and Sampling Soils were used to classify soil acidity and alkalinity (Acidic 7.3).
Source
Hawaii Soil Atlas
Link to download data from source