41.8.1. Root Zone Water Availability

Try these first

1. 1.

   What is the root zone?

   Hint

   Think about where plants draw their nutrients from.

2. 2.

   What does MAD stand for?

   Hint

   Consider how much water can be used before irrigation is necessary.

3. 3.

   What is Root Zone Water Availability?

   • Water at any soil depth
   • Water within the root zone where crops uptake
   • Water above the soil surface

   Hint

   Think about where plant roots get their water.

4. 4.

   True or False: Over-saturation of soil is beneficial for all plants.

   • True
   • False

   Hint

   Consider how water affects roots.

5. 5.

   You have a root zone depth of 30 cm and a MAD of 40%. If the field capacity is measured at 40%, how much water can you allow to be depleted before irrigating?

   Hint

   Consider calculating the difference between field capacity and wilting point first.

6. 6.

   Design an irrigation schedule for a crop that experiences varying weather conditions throughout the growing season, specifying adjustments for moisture levels.

   Hint

   Think about how different weather patterns might require different irrigation responses.