50
seen Ds significDnt IDctor in DIIecting &)
Container spacing imposes a physical limitation on potential
water capture because each plant, on average, can only
capture water within the area allotted the container.
Test Three: Sprinkler type Wobbler versus impact
Warbler sprinklers resulted in improved irrigation water
cDStXre by in cP diDPeter contDiners bXt not in
cm containers.
)or cP contDiners ZobbOer sSrinNOers increDsed &)
coPSDred Zith iPSDct sSrinNOers
The ability of wobbler sprinklers to deliver water uniformly
at a lower pressure than impact sprinklers was estimated
to have reduced the force of impact of water on the plant
canopy, with the reduced force of impact as such may
have increased retention of the water and enhanced
subsequent channeling down leaves and stems to the
container substrate.
Conclusions
Results of the tests have provided a clear indication that
CF can be classed as a dynamic value, which can be
ascertained by plant species, plant size, container size,
container spacing, and nozzle type.
Growth habit and canopy characteristics can also determine
to what extent a plant species can affect the capture of
sprinkler irrigation water.
Container size and spacing were shown to affect CF by
imposing a physical limitation to the amount of water
available for capture.
CF can play a critical role in adjusting irrigation run times
to apply a required amount of water to plant containers.
7he oYerDOO findings oI these tests Zere thDt groXSing
plants with similar irrigation requirements within container
nurseries can readily be adopted as a best management
practice. ■
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