Many areas of the Central Region have been inundated with heavy
rainfall during the past few weeks. The acute effects of severe flooding
with respect to fatalities and property damage are usually well
documented in the nightly news. The immediate impact of flooding that
occurs on a golf course is obvious because erosion and silt deposits are
seen just as soon as the water recedes. However, some of the
side-effects of heavy rainfall that caused the floods are not so
obvious.
A popular practice at an increasing number of golf facilities is to
convert a portion of the maintained rough to tall grass areas. These low
input naturalized areas still require annual maintenance, but the
ultimate cost of managing a tall grass area will be less than the cost
of maintaining a rough that is mowed at least once a week, fertilized,
and treated for weeds and insect pests.
Your average golfer prefers a thin, wispy stand of turf in a natural
area as well as an opportunity to find an errant shot and, depending on
the lie, the opportunity to advance the ball towards the hole. Golfers
have been grousing a bit more than usual about dense, unplayable tall
grass lately on Course Consulting Service visits, and the weather is
mostly to blame for their angst.
The fact is that once the turf is well established, most tall grass
areas perform best when they are kept as dry as possible. Fine fescue
natural areas are particularly susceptible to the encroachment of
coarse, weedy grasses and broadleaf weeds under wet soil conditions.
Unfortunately, nothing can be done to keep the recent heavy rainfall out
of the tall grass.
On the other hand, an extra effort can be made to keep irrigation off
the tall grass areas. Full-circle sprinklers that extend coverage into
the natural areas can be switched to part-circle sprinklers, and you may
find sprinklers deep in the roughs that can be eliminated. This often
occurs in highly visible areas of the course where sprinklers that water
tees are located between the tees and nearby tall grass areas. Tees are
typically watered frequently throughout the season to accelerate divot
recovery, so the tall grass areas near tees are often lush and weedy.
Take the time to assess and adjust irrigation coverage during spring and
you will reap the double benefit of water savings and the tall grass
areas golfers crave.
Source: Bob Vavrek (
rvavrek@usga.org)