Question:
Given below are two statements:
Statement (I): In vegetable crops, luxury consumption of potassium is a very common feature.
Statement (II): Potassium is more mobile than nitrogen fertilizers.
Choose the correct answer from the options given below:
Given below are two statements:
Statement (I): In vegetable crops, luxury consumption of potassium is a very common feature.
Statement (II): Potassium is more mobile than nitrogen fertilizers.
Choose the correct answer from the options given below:
Statement (I): In vegetable crops, luxury consumption of potassium is a very common feature.
Statement (II): Potassium is more mobile than nitrogen fertilizers.
Choose the correct answer from the options given below:
Show Hint
Due to high soil mobility, nitrogen is prone to leaching loss and requires split applications, whereas potassium is less mobile and is typically applied as a basal dose.
Updated On: Jul 10, 2026
- Both Statement (I) and Statement (II) are true.
- Both Statement (I) and Statement (II) are false.
- Statement (I) is true but Statement (II) is false.
- Statement (I) is false but Statement (II) is true.
Show Solution
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The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept:
Nutrient uptake dynamics and nutrient mobility in the soil-plant system are fundamental concepts in crop nutrition and soil science.
Step 2: Detailed Explanation:
- Statement (I) is true: "Luxury consumption" refers to the tendency of plants to absorb a nutrient in excess of their actual physiological requirement for optimum yield when that nutrient is abundant in the soil. This is a common characteristic of potassium ($\text{K}$) uptake in many vegetable crops, particularly root, tuber, and leafy vegetables.
- Statement (II) is false: In the soil, nitrogen fertilizers (especially nitrate, $\text{NO}_3^-$) are highly mobile because they are not adsorbed by the negatively charged soil clay minerals. Potassium ($\text{K}^+$), being a cation, is attracted to and held by the exchange sites on clay complexes, making it only moderately mobile to immobile compared to nitrate nitrogen. Thus, nitrogen is more mobile in soil than potassium.
Step 3: Final Answer:
Statement (I) is true, and Statement (II) is false, which corresponds to Option (C).
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