www.stma.org June 2015 | SportsTurf 49
for such a heavily used site. Once established, these grasses are
tough and they are quicker to establish than Kentucky blue-
grass. A question may be raised about Endophytes in tall fescue
and perennial ryegrass and their effect on dogs. Endophytes are
intercellular fungi that have a symbiotic relationship with turf
as they are toxic to surface feeding insects like bluegrass billbugs
and chinch bugs. They are regarded as "good" bugs and part of a
sound IPM program. Unfortunately, Endophytes can also cause
some health problems in horses and other grazing animals so are
used carefully in pastures. Dogs generally chew on grass to initi-
ate throwing-up and do not typically ingest grass, which leads us
to deduce that endophytic turfgrasses should not pose a threat
to any of the dogs. The dogs would have to eat a lot of grass for
there to be a problem. The reason we went with a perennial rye-
grass program at the dog park, rather than tall fescue, came down
to the extreme use at this particular park. There is purely not
enough time to establish tall fescue when this park is being used,
while perennial ryegrass will germinate in 3 days and provide
dense green cover in as little as 21 days.
Weed control will be the final part of the dog park mainte-
nance program since it was overrun with prostrate knotweed.
Perennial weeds like clover that grow in compacted soil could
be helpful in preventing soil erosion, but summer annuals like
crabgrass and prostrate knotweed can cause problems once they
die in October. Those areas quickly become mud and then hard,
compacted soils. The approach, using an herbicide, will be to use
a pre-emergence product, such as prodiamine or dithiopyr in
early March, before the park opens. The advantages of this are
that there would be reasonably good control of the knotweed and
crabgrass and the product would be applied at a time when the
dogs are not around. In addition to the application timing, the
chemical properties of those herbicides are such that the chances
of unintentional exposure to the animals via dislodgeable resi-
dues becomes very small.
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Aquatrols 2 www.aquatrols.com
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Campey Turf Care 17 www.campeyturfcare.com
CoverSports USA 12 www.coversports.com
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SAFE Foundation 39 www.stma.org/the-safe-foundation
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STMA SourceBook 25 www.stma.org/stma-industry-sourcebook
Toro Irrigation 51 www.toro.com/3100
Turf Time Equipment 48 www.turftimeeq.com
West Coast Turf 11 www.westcoastturf.com
World Class Athletic Surfaces 17 www.worldclasspaints.com
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