37.6. Irrigation Requirement (IR)

Try these first

1. 1.

   What is the formula for calculating Irrigation Requirement?

   Hint

   Think about how effective rainfall affects total water needs.

2. 2.

   What does ER stand for?

   Hint

   Recall its significance in irrigation.

3. 3.

   What does IR stand for in agricultural terms?

   • Irrigation Rate
   • Irrigation Requirement
   • Internal Ratio

   Hint

   Think of the relationship between crop water and actual requirements.

4. 4.

   True or False: Effective Rainfall is always equal to total rainfall.

   • True
   • False

   Hint

   Recall the definition of effective rainfall.

5. 5.

   A farmer needs 1200 mm of water for their crop but anticipates that effective rainfall will only yield 150 mm. Calculate the irrigation requirement and discuss how the farmer can ensure efficient water use.

   Hint

   Use the IR formula and think about irrigation practices.

6. 6.

   In a region with a changing climate, predict how variability in effective rainfall might impact irrigation planning and crop selection.

   Hint

   Think about how different crops may respond to changes in water availability.