38.6. Duty, Delta, and Cropping Pattern

Try these first

1. 1.

   What does Duty refer to in irrigation?

   Hint

   Think about how much land can be watered.

2. 2.

   Define Delta in the context of crops.

   Hint

   Consider how water depth varies by crop.

3. 3.

   What does Duty measure?

   • Area per unit discharge
   • Depth of water requirement
   • Water efficiency

   Hint

   Think about area coverage.

4. 4.

   Delta refers to the depth of water needed by crops.

   • True
   • False

   Hint

   Consider how much water crops consume.

5. 5.

   Given a crop with a Delta of 1200mm, calculate the total water needed for a field of 10 hectares.

   Hint

   Convert units accordingly.

6. 6.

   If a certain region has an irrigation responsibility of 3 units of water discharge, what is the maximum area consisting of high Delta crops that can be effectively irrigated?

   Hint

   Think about how Duty adjusts to high water needs.