Question:
According to the classification of irrigation water based on EC, the quality of irrigation having EC between 5-10 dS/m is:
According to the classification of irrigation water based on EC, the quality of irrigation having EC between 5-10 dS/m is:
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To prevent salt accumulation when using saline water (EC 5-10 dS/m), apply a "leaching fraction".
This extra water helps wash the salts down below the active root zone of the crops.
This extra water helps wash the salts down below the active root zone of the crops.
Updated On: Jul 29, 2026
- Normal water
- Low salinity water
- Saline water
- High salinity water
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Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept:
Irrigation water quality is classified based on salinity hazards, which are determined by measuring its Electrical Conductivity (EC).
The EC value reflects the concentration of total dissolved salts in the water.
High salinity water poses osmotic challenges to crops, reducing their ability to extract moisture from the soil.
Step 2: Detailed Explanation:
Different institutions classify water based on EC to guide farmers on safe crop-water matches.
According to standard agricultural classifications (such as the USSL and CSSRI systems):
- Normal or good quality water has an EC value of less than \( 2.0 \text{ dS/m} \).
- Marginally saline water has an EC range of \( 2.0 \) to \( 4.0 \text{ dS/m} \).
- Saline water is classified in the range of \( 4.0 \) to \( 10.0 \text{ dS/m} \).
- Highly saline water has an EC value exceeding \( 10.0 \text{ dS/m} \).
An EC of 5-10 dS/m indicates a high concentration of soluble salts.
This water is classified directly as "Saline water".
Using this water for irrigation requires highly salt-tolerant crops like barley, sugar beet, or date palm.
It also requires light-textured soils with excellent drainage to prevent the build-up of salts in the root zone.
Step 3: Final Answer:
Irrigation water with an EC between 5 and 10 dS/m is classified as Saline water.
Irrigation water quality is classified based on salinity hazards, which are determined by measuring its Electrical Conductivity (EC).
The EC value reflects the concentration of total dissolved salts in the water.
High salinity water poses osmotic challenges to crops, reducing their ability to extract moisture from the soil.
Step 2: Detailed Explanation:
Different institutions classify water based on EC to guide farmers on safe crop-water matches.
According to standard agricultural classifications (such as the USSL and CSSRI systems):
- Normal or good quality water has an EC value of less than \( 2.0 \text{ dS/m} \).
- Marginally saline water has an EC range of \( 2.0 \) to \( 4.0 \text{ dS/m} \).
- Saline water is classified in the range of \( 4.0 \) to \( 10.0 \text{ dS/m} \).
- Highly saline water has an EC value exceeding \( 10.0 \text{ dS/m} \).
An EC of 5-10 dS/m indicates a high concentration of soluble salts.
This water is classified directly as "Saline water".
Using this water for irrigation requires highly salt-tolerant crops like barley, sugar beet, or date palm.
It also requires light-textured soils with excellent drainage to prevent the build-up of salts in the root zone.
Step 3: Final Answer:
Irrigation water with an EC between 5 and 10 dS/m is classified as Saline water.
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