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Type
Selects the general plant type, from a table of choices.
The Type setting chooses the general category of plant, based on groups defined in WUCOLS (Water Use Classification of Landscape Species).
This important setting will tell the system the plant's characteristics including the depth of the root zone, and the sensitivity of the species to
watering. It combines with the Variety setting to create a crop coefficient (Kc) as well as root depth and other factors.
Variety
Selects the exact, or similar, species under Types.
NOTE: The included plant types are based on recognized categories of plants, by watering needs. The plant type choices in the ET System are rep-
resentative of the different levels of watering requirements of typical plants, and are based on the
Water Use Classifications of Landscape Species
(WUCOLS) Guide
developed by the University
of California (available on the internet from the California Department of Water Resources, at http://www.owue.water.ca.gov/landscape/faq/faq.
cfm).
If an exact plant is not represented, there are two options:
1) Choose the closest type, based on the plant’s watering needs. This is generally adequate.
2) Customize one of the existing plant types. This is described in detail below the plant type table.
For further information on regional plant data, consult an agronomist or regional county extension office.
Содержание ET System
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