Which of the following is NOT a negative consequence of irrigation of crops?

• A. Increased soil salinization
• B. Waterlogging of soil
• C. Depletion of local water resources
• D. Enhanced crop yield

Answer: (D)

Verified step by step guidance

1. Step 1: Begin by understanding the concept of irrigation. Irrigation is the artificial application of water to soil to assist in the growth of crops. While it has benefits, it can also lead to negative environmental consequences.
2. Step 2: Review the listed options and identify which ones are negative consequences of irrigation. Increased soil salinization occurs when irrigation water evaporates, leaving salts behind in the soil, which can harm plant growth. Waterlogging of soil happens when excess water saturates the soil, reducing oxygen availability for roots. Depletion of local water resources occurs when irrigation uses up water from nearby rivers, lakes, or aquifers, potentially harming ecosystems.
3. Step 3: Analyze the option 'Enhanced crop yield.' This is a positive consequence of irrigation, as it directly supports the growth and productivity of crops by providing them with sufficient water.
4. Step 4: Compare the positive consequence ('Enhanced crop yield') with the negative consequences ('Increased soil salinization,' 'Waterlogging of soil,' and 'Depletion of local water resources'). Determine which option does not align with the negative impacts of irrigation.
5. Step 5: Conclude that the correct answer is 'Enhanced crop yield,' as it is not a negative consequence of irrigation but rather a beneficial outcome.