41.8.3. Water Use Efficiency (WUE)

Try these first

1. 1.

   What does WUE stand for?

   Hint

   It's an acronym related to agricultural productivity.

2. 2.

   Write the formula for calculating WUE.

   Hint

   It uses yield and water amounts.

3. 3.

   What does WUE measure?

   • Water management
   • Crop yield efficiency
   • Soil health

   Hint

   Consider what the W in WUE represents.

4. 4.

   True or False: Higher WUE indicates more water is used for the same yield.

   • True
   • False

   Hint

   Think about what efficiency implies.

5. 5.

   A farmer uses 800 m³ of water to produce 3200 kg of corn. If a new irrigation method allows him to reduce water use by 25% while maintaining the same yield, what would be the new WUE?

   Hint

   Calculate the new water usage first.

6. 6.

   Calculate the required yield for a WUE of 4 kg/m³ if a farmer uses 1000 m³ of water.

   Hint

   Use the WUE formula to find the yield needed.