Question

Which effect of irrigation is seen negatively on the human environment?
1. New man made lakes
2. Increased self-sufficiency in food, reducing dependence on other countries
3. Project architecture cannot mix with region
4. Retention of reservoirs and possible multipurpose water use

Answer 1

Correct Answer - Option 3 : Project architecture cannot mix with region

Explanation:

The effect of irrigation is seen negatively on the human environment that project architecture cannot mix with the region.

• Advantages of irrigation:
  •  Irrigation plays a key role in increasing food production to feed the expanding population.
  • Irrigation can ensure stable production in traditional dryland farming systems, subject to frequent vagaries of rainfall.
  • Irrigation can prolong the effective growing period in areas with dry seasons, plant permitting multiple cropping and employment generation.
  • With the security of cropping under irrigation, additional inputs like tillage, fertilizers, plant protection, etc. become economically feasible.
  • Irrigation reduced the risk of expensive inputs being wasted by drought.
• The adverse effect of Irrigation:
  • Irrigation without appropriate drainage leads to land degradation, waterlogging, and soil salination leading to crop productivity.
  • Groundwater pollution, especially with nitrate, due to the seepage of water carrying nitrate from applied fertilizer to the groundwater.
  • Irrigation may lead to a colder and damper climate conducive to the outbreak of pests and diseases.