Question

Which soil property determines the soil acidity or alkalinity?

Answer 1

1. To determine the acidity and alkalinity of the soil, pH is measured.
2. pH measures the concentration of hydrogen ions in the soil.
3. If pH is below than 7 then the soil is acidic and if greater than 7 then the soil is alkaline.
4. Because the concentration of hydrogen ion changes in large range so a logarithmic scale is used for its measurement.
5. On this scale if pH decreases by 1, acidity will increase by 10.

Answer 2

The pH of the soil determines the soil acidity and soil alkalinity.

Explanation:

• The pH ranges from 0-14, with 1 being most acidic, 7 being neutral, and 14 being the most basic or alkaline. For the growth of good quality nutritious plants, the soil preferred is slightly acidic, having a pH range 6.0- 6.6.
• Mostly, acidic soils are found in high rainfall areas, whereas alkaline soils in the low-rainfall areas.

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