44.1. Crop Water Requirement (CWR)

Try these first

1. 1.

   Define Crop Water Requirement.

   Hint

   Think about the basic needs of a crop.

2. 2.

   List the main components of CWR.

   Hint

   Consider what factors contribute to a plant's need for water.

3. 3.

   What does CWR stand for?

   • Crop Water Ratio
   • Crop Water Requirement
   • Crop Yield Ratio

   Hint

   Think about what this acronym relates to in crop management.

4. 4.

   True or False: Evapotranspiration includes both evaporation and transpiration.

   • True
   • False

   Hint

   Recall the specific components that make up ET.

5. 5.

   If a crop in a humid climate requires 400 mm of water, and in a dry climate it requires 600 mm of water, discuss the potential reasons for this difference.

   Hint

   Consider the relationship between moisture in the air and plant needs.

6. 6.

   Create an irrigation plan for a field with deep clay soil, ensuring to account for its high water-holding capacity.

   Hint

   Factor in the soil's ability to retain water when planning irrigation.