43.2.5. Consumptive Use vs Water Requirement

Try these first

1. 1.

   What is consumptive use?

   Hint

   Think about how plants use water.

2. 2.

   List one component of water requirement.

   Hint

   It's something that adds to the total water needed.

3. 3.

   What does consumptive use refer to?

   • A. Water used by plants
   • B. Total water needed including losses
   • C. Water lost only through evaporation

   Hint

   Focus on how plants utilize water.

4. 4.

   True or False: Water requirement only accounts for the consumptive use.

   • True
   • False

   Hint

   Remember what is included in water requirement.

5. 5.

   A farmer estimates that their crop has a consumptive use of 350 mm but experiences a leaching requirement of 60 mm due to high salt levels in the soil. What is the total water requirement for the crop?

   Hint

   Add the consumptive use to the leaching requirement.

6. 6.

   How would an increase in average temperature impact the consumptive use of a crop if the average increase is 5°C? Provide a scenario explaining your reasoning.

   Hint

   Consider how temperature affects evaporation.