ISA Certified Arborist Practice Exam 2026 – All-in-One Resource for Comprehensive Exam Success!

The term that describes the rate at which water penetrates the soil is called the Infiltration Rate. Infiltration Rate refers to the speed at which water is able to move into the soil. This process is crucial for water absorption and distribution within the soil profile, which in turn impacts plant health and growth.

The other options are not correct:

- Acclimation refers to the process of plants adjusting to new environmental conditions.

- Slow Release Ferts (fertilizers) relate to fertilizers designed to release nutrients gradually over time.

- Water Holding Capacity is the ability of the soil to retain water for plant use.