Question:

The law which states that whatever is being taken by plants from soil needs to be restored to maintain the nutrient supplying capacity of the soil is known as:

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Justus von Liebig is known for two foundational concepts in soil fertility:
1. Law of the Minimum: Yield is limited by the scarcest nutrient.
2. Law of Restitution: Removed nutrients must be returned to the soil to sustain production.
  • Law of Restoration
  • Law of Restitution
  • Law of Maximum
  • Law of Conservation
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The Correct Option is B

Solution and Explanation

Step 1: Understanding the Concept:
To sustain soil fertility over long periods of cultivation, nutrients removed by harvested crop components must be replenished. This balance is defined by the Law of Restitution.

Step 2: Detailed Explanation:

1. The Law of Restitution was formulated by the German chemist Justus von Liebig.
2. It states that the nutrient supplying capacity and overall fertility of a soil can only be preserved if nutrients removed by crops (and losses via leaching or erosion) are restored to the soil in equivalent quantities through fertilizers, manures, or crop residues.
3. If restitution is neglected, soil reserves deplete, leading to a decline in crop productivity over time.

Step 3: Final Answer:

The principle described is Liebig's Law of Restitution.
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