Chemistry
Grade-10
Easy
Question
What is the pH range which provides for the optimal availability of plant essential nutrients (elements)?
- 12.3 -14.2
- 6.3 -7.2
- 2.3 - 3.3
- None of the answers is correct
Hint:
Mostly pH around neutral condition is good for plants.
The correct answer is: 6.3 -7.2
The pH of the soil strongly influences on the availability of essential plant nutrients. In mineral soils the optimal pH range is 5.5 to 6.5 and in organic soils the optimal range is 5.4 to 6.0. If the pH is below or above this range, the availability of nutrients either declines, leading to deficiencies, or increases, leading to potential toxicities. Availability of soil nutrients is affected by changes in soil pH in different ways.
The pH range which provides for the optimal availability of plant essential nutrients 6.3 to 7.2
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