Question:
Salinization occurs when the irrigation water accumulated in the soil evaporates, leaving behind salts and minerals. What are the effects of salinization on the irrigated land? (UPSC Civil Services Preliminary Examination- 2011)
AIt greatly increases the crop production
BIt makes some soils impermeable
CIt raises the water table
DIt fills the air spaces in the soil with water
Answer:
B. It makes some soils impermeable
Explanation:
Salinization has several effects on irrigated land:
1. Soil infertility: High salt concentrations can make soil less fertile, reducing crop yields.
2. Reduced water availability: Salts can reduce the soil's ability to absorb water, making it harder for plants to access water.
3. Soil erosion: Salinization can lead to soil erosion, as the soil structure breaks down.
4. Changes in soil pH: Salts can alter the soil's pH, affecting microbial activity and nutrient availability.
5. Decreased crop diversity: Salinization can limit the types of crops that can be grown, as some plants are more sensitive to salt than others.