Facility Forum - Summer 2017 - 13

BUILDINGS & GROUNDS

Water Use in
By Eric M. Lyons, PhD, Associate Professor of Turfgrass Science,
Department of Plant Agriculture, University of Guelph

KENTUCKY AND
OTHER SPECIES
HAD SIGNIFICANT
INCREASES IN
NIGHTTIME WATER
LOSS IF THE
TURFGRASS WAS
OVERWATERED
COMPARED TO
WHEN IT WAS
WATERED AND
ALLOWED TO DRY
OUT OVER TIME.

Note: A previous version of this article
has been published in ONCourse

ater
is
always
an issue in
highly managed
t u rfgrass systems.
Turfgrasses are
often singled out in the urban landscapes as large users of the water supply. One question that is trying to be
answered by researchers at the Guelph
Turfgrass Institute is how turfgrass managers can alter management to potentially decrease the amount of water used
by the turfgrass.
Many factors affect turfgrass water
use, although the most important factor appears to be the amount of available water. This means that turfgrass
managers have a lot of control of water
use of turfgrasses by altering their
own behaviour. If water is not present, grasses cannot use it. Recently,
Craig Harnock, a graduate student at
the University of Guelph working on
the Toronto Blue Jays Natural Turfgrass
Project, made a surprising discovery
about turfgrass water use. He showed
that Kentucky and other species had
significant increases in nighttime water
loss if the turfgrass was overwatered
compared to when it was watered and
allowed to dry out over time. It is generally believed that plants conserve water

Figure 1. Bentgrass grown in a growth
chamber to measure water use and
photosynthesis to calculate water use
efficiency and the effects of nitrogen
and other management strategies on
water use of creeping bentgrass.

overnight by closing their stomates. This
did not seem to be the case when water
was abundant. This adaptation to wet
soils could have come about to dry out
the soils quickly to reduce competition
from species that prefer wetter conditions than turfgrass.
The uniqueness of the Toronto Blue
Jays project also allowed Harnock to
ask questions regarding how application of hormones such as ABA would
affect evapotranspiration (ET). His
research showed that the application
of ET could reduce ET by 20 per cent
FACILITY FORUM | 13



Table of Contents for the Digital Edition of Facility Forum - Summer 2017

Risk Management Guidelines for Water Recreational Equipment Areas
Water Use in Turfgrasses
Cemeterian Operations and Management Training– Cape Town, South Africa
The Benefits and Challenges of Daylighting Recreation Facilities
Effective Human Resources Management
Energy Champion – Time to Plan
Rules for Flying the National Flag of Canada
Preparing for the PyeongChang 2018 Winter Olympic Games
Health & Safety (PSHSA) – Preventing and Managing Heat Stress
Member Profile – Jim Bryson, City of Stratford
Index of Advertisers
Facility Forum - Summer 2017 - Intro
Facility Forum - Summer 2017 - cover1
Facility Forum - Summer 2017 - cover2
Facility Forum - Summer 2017 - 3
Facility Forum - Summer 2017 - 4
Facility Forum - Summer 2017 - 5
Facility Forum - Summer 2017 - 6
Facility Forum - Summer 2017 - 7
Facility Forum - Summer 2017 - Risk Management Guidelines for Water Recreational Equipment Areas
Facility Forum - Summer 2017 - 9
Facility Forum - Summer 2017 - 10
Facility Forum - Summer 2017 - 11
Facility Forum - Summer 2017 - 12
Facility Forum - Summer 2017 - Water Use in Turfgrasses
Facility Forum - Summer 2017 - 14
Facility Forum - Summer 2017 - 15
Facility Forum - Summer 2017 - Cemeterian Operations and Management Training– Cape Town, South Africa
Facility Forum - Summer 2017 - 17
Facility Forum - Summer 2017 - 18
Facility Forum - Summer 2017 - The Benefits and Challenges of Daylighting Recreation Facilities
Facility Forum - Summer 2017 - 20
Facility Forum - Summer 2017 - 21
Facility Forum - Summer 2017 - Effective Human Resources Management
Facility Forum - Summer 2017 - 23
Facility Forum - Summer 2017 - 24
Facility Forum - Summer 2017 - Energy Champion – Time to Plan
Facility Forum - Summer 2017 - 26
Facility Forum - Summer 2017 - 27
Facility Forum - Summer 2017 - 28
Facility Forum - Summer 2017 - Rules for Flying the National Flag of Canada
Facility Forum - Summer 2017 - 30
Facility Forum - Summer 2017 - 31
Facility Forum - Summer 2017 - Preparing for the PyeongChang 2018 Winter Olympic Games
Facility Forum - Summer 2017 - 33
Facility Forum - Summer 2017 - 34
Facility Forum - Summer 2017 - 35
Facility Forum - Summer 2017 - 36
Facility Forum - Summer 2017 - Health & Safety (PSHSA) – Preventing and Managing Heat Stress
Facility Forum - Summer 2017 - 38
Facility Forum - Summer 2017 - 39
Facility Forum - Summer 2017 - 40
Facility Forum - Summer 2017 - Member Profile – Jim Bryson, City of Stratford
Facility Forum - Summer 2017 - 42
Facility Forum - Summer 2017 - 43
Facility Forum - Summer 2017 - 44
Facility Forum - Summer 2017 - Index of Advertisers
Facility Forum - Summer 2017 - 46
Facility Forum - Summer 2017 - cover3
Facility Forum - Summer 2017 - cover4
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