April/May 2020 - 28

occasionally fungicides are used
to prevent or cure turf fungus
disease. Also the Bill bug is an
insect we target in the summer.
These are easily controlled by a
contact insecticide sprayed between
midnight and 2am when the billbugs
are on the leaf tips. Soccer fields
are not in use during the summer
so these applications are easy
to schedule. We apply all liquid
applications with the Toro 5800D
sprayer. This unit utilizes an onboard
computer to operate nozzle flow and
pressure to very exact conditions.
Regular irrigation is another
important input. Balancing irrigation
to actual plant water needs is critical
since it is easy to over water grass
and create shallow roots and weak
plants. To maintain peak irrigation
efficiency, it is important to spend
time in the summer evaluating
performance and coverage and
making repairs. Keeping the
irrigation systems modernized helps
reduce the summer headaches for
players about irrigation concerns.
Communicating concerns before the
field becomes too wet or too dry is
always appreciated.
As summer winds down in August
the irrigation technician. We use
central irrigation controls with
evapotranspiration replacement
so we are only replacing the water
the plant actually used or lost
to evaporation. Central control
systems use input from our weather
station and seven unique field
variables to calculate exact run
times for each irrigation rotor.
Even with the best equipment
and maintenance, there are still
unforeseen issues associated with
large acreage irrigation. Because
of this, we encourage input from
mower operators, coaches, and
we will gradually start lowering our
mowing heights to get them ready
for fall soccer. This has to be done
gradually so as not to harm the
grass. Practice fields will get back
down to 2 " and competition fields
slightly lower using Toro 6000 Z
mowers. As we lay out and paint the
fields, we shift fields slightly to keep
the wear areas from being in the
exact same spot as it was during the
previous season.
By having a sound agronomic
plan for the summer and carefully
executing the plan you can have an
outstanding natural grass soccer
field to start the fall season even after
hot, dry summer weather.
John Peterman, CSFM, is Sr.
Grounds Supervisor for the Blue Valley
School District in Overland Park, KS
26 APRIL/MAY 2020
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