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Article Title: Regional K buffer in organic and mineral soils and their associations with estimated cation exchange capacity, pH, groundwater silicon and some environmental factors in continental Finland 1986-90 with discussion on inorganic carbon
Author: Toysa T
Published Date: September 14, 2019
Cation exchange capacity (CEC) is the total capacity of a soil to hold exchangeable cations. It influences the soil’s ability to hold onto essential nutrients and provides a buffer against soil acidification. Organic matter has a very high CEC. Anyhow potassium buffer power is known to be weak in other than clayey and silt soils, especially in peat, why fertilization can cause excessive variation in plant mineral composition. Finnish soil samples are collected mainly in autumns. That’s why they obviously reflect K buffer power of organic soils, too. The aim of this study is to clarify regional associations of cropland K, (estimate) CEC (Ca+Mg+K) and pH, in organic (org) and mineral soils (min), groundwater (gw) silicon (Si) and geographic factors Latitude (Lat) and Longitude (Long). The data are from old sources.