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58

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area of turfgrass receives as well as the amount lost through

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Green roof construction within the

lysimeters

The twelve outdoor lysimeters used during the investigation

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system was constructed

(See Figure One)

.

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migrating from the substrate towards the drainage layer to

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Materials and Methods

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Table One

.

Half of the lysimeters were used to measure the substrate

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Measurement procedures

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before the irrigation of the turfgrass using a dielectric moisture

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Figure One:

Layers involved in the construction of a

green roof with Turfgrass

Table One: Physical characteristics of the phosphate

used in the tests.

Measurement

Unit

Dry Bulk Density

0.7 JUDP SHU FXEiF

centimeter

Saturated Bulk Density

1.36 JUDP SHU FXEiF

centimeter

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5 .00

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12.60