37.2. Components of Water Requirement

Try these first

1. 1.

   What does Consumptive Use (Cu) include?

   Hint

   Think about the processes of evaporation and transpiration.

2. 2.

   Name one special water need for crops.

   Hint

   Consider the activities before planting seeds.

3. 3.

   What does Consumptive Use (Cu) refer to?

   • Water not used by plants
   • Total water used by crops for evapotranspiration
   • Water from rainfall

   Hint

   Think of the processes in which water moves in crops.

4. 4.

   True or False: Percolation losses are important to consider in dry farming.

   • True
   • False

   Hint

   Consider the context of the crop type and its water needs.

5. 5.

   Calculate the total water needed if you have a paddy field with a 20% percolation loss and a crop water requirement of 1000 mm.

   Hint

   Consider how losses will affect the total amount needed.

6. 6.

   Formulate a plan to reduce application losses in a large scale irrigation project.

   Hint

   Think about the tools and education needed for better practices.