2.3. Advantages

Try these first

1. 1.

   What is one advantage of sub-surface irrigation related to evaporation?

   Hint

   Think about where water is applied.

2. 2.

   What does sub-surface irrigation prevent regarding weeds?

   Hint

   Consider moisture levels on the soil surface.

3. 3.

   What is a primary advantage of sub-surface irrigation?

   • High water evaporation
   • Reduced weed growth
   • Surface interference

   Hint

   Focus on how the water delivery system impacts plant competition.

4. 4.

   True or False: Surface irrigation methods are always more efficient than sub-surface irrigation methods.

   • True
   • False

   Hint

   Think about water conservation and resource management.

5. 5.

   You are tasked with advising a farmer on whether to use sub-surface or surface irrigation for a new cotton field in a gently sloping region. What factors will you consider?

   Hint

   Focus on each irrigation’s impact based on the field's characteristics.

6. 6.

   If a farmer finds returns on investment diminishing with a surface irrigation system, how could transitioning to a sub-surface system improve their outcomes?

   Hint

   Analyze both irrigation types in terms of long-term yield improvements.