39.1.3. Factors Affecting Delta

Try these first

1. 1.

   What is Delta?

   Hint

   Think about water requirements for crops.

2. 2.

   Name one factor that affects Delta.

   Hint

   Consider aspects of agriculture that impact water needs.

3. 3.

   What does Delta represent in irrigation?

   • A type of irrigation method
   • Total depth of water needed
   • The growing period of the crop

   Hint

   Think about what water crops need to grow.

4. 4.

   True or False: Delta is the same for all types of crops.

   • True
   • False

   Hint

   Recall the examples of rice and wheat.

5. 5.

   If a farmer wants to grow rice with a Delta of 135 cm over a 120-day base period, how much water does he need in total?

   Hint

   Consider how much water is in cm into hectares for practical conversions.

6. 6.

   Compare two irrigation methods, drip and flood, and their impact on Delta for a vegetable crop.

   Hint

   Think about the efficiency of water use in different methods.