After reading this article you will learn about:- 1. Distribution of Acid Soil 2. Classification of Acid Soils 3. Pedogenic Processes. Distribution of Acid Soil: Out of 157 million hectares of cultivable land in India, 49 million hectares of land are acidic, of which 26 million hectares of land having soil pH less than 5.6 (pH < 5.6) and the [...]
After reading this article you will learn about the sources of hydrogen ions for acid soil. Soil acidity is caused by ionisable hydrogen ions. Exchangeable hydrogen ions (which along with other such cations) are present in the soil to neutralize the negative charge arising from isomorphous substitution. They are displaceable by any cation which is added in fairly high concentration. [...]
This article throws light upon the five main factors responsible for the development of acid soil. The factors are: 1. Leaching due to Heavy Rainfall 2. Microbiological Factors 3. Origin of Acid from Acid Parent Rock Material 4. Removal of Bases by Crops 5. Continuous Application of Acid-Forming Fertilizers. Factor # 1. Leaching due to Heavy Rainfall: The magnitude of [...]