23.4. Measurement Techniques and Tools

Try these first

1. 1.

   What does a tensiometer measure?

   Hint

   Think about what a plant needs from the soil.

2. 2.

   What is the primary use of neutron probes?

   Hint

   Recall what they detect in the soil.

3. 3.

   What does a tensiometer measure?

   • Soil moisture
   • Soil water tension
   • Temperature

   Hint

   It's about how 'stressed' the soil is for water.

4. 4.

   True or False: Neutron probes are inexpensive and easy to use without specialized training.

   • True
   • False

   Hint

   Consider the complexity of determining moisture in soils.

5. 5.

   You are tasked with designing a comprehensive irrigation system for a local farm. Which measurement tools would you employ to ensure optimal water management, and why?

   Hint

   Consider combining ground and technological data for the best results.

6. 6.

   Discuss the limitations of relying solely on remote sensing for measuring AET in a variable landscape.

   Hint

   What might affect the data you get from space vs. the ground?