Full Product Manual

Table Of Contents
Irrigate Base Plants Page 39
Selecting Emitters
TABLE 5-7: EMISSION DEVICE SELECTION
Soil Type Emitter PC-Module Xeri-Bubbler
Coarse Soil XB-20 PC-05, 07, 10 SXB, VXB
Medium Soil XB-10, XB-20 PC-05 SXB, UXB
Fine Soil XB-05 w/trough w/trough
In general, use Table 5-7 below to guide your emission device selection. Remem-
ber that the less coarse or sandy the soil is, the more possibility of runoff. The
more water a plant needs on a daily basis, the greater the need for higher flow
emission devices to avoid installing an inordinate number of low-flow emitters.
To address this challenge, consider the use of wells or troughs to capture the
higher flow that exceeds the infiltration rate of the soil.
Recommended Emitter Placement
To assure optimal wetting of the root zone, the emitters should be spaced in a
circle, 3/4 of the way between the trunk of the plant and its dripline. The dripline
is where the edge of the tree canopy would cast its shadow on the ground with
the sun directly overhead.
Tips for placing emitters (see also Figure 5-5):
Use at least two emitters per plant.
Place emitters so they are evenly spaced around the plant.
Place emitters three-quarters of the way between the plant’s trunk and the
dripline.
When 1/4" tubing runs exceed 5 feet, use a SPB-025 connector and install an
emitter at the end of the 1/4" tubing run.
Always use stakes and diffuser bug caps at the end of the 1/4" tubing for
longer reliability.
Figure 5-5: Emitter Placememt
Small Shrub
End Closure
Large Shrub
Emission Devices
1/4" Distribution
Tubing
1/2" Distribution
Tubing
®