Enhanced efficiency fertilizer is a critical tool for Brad Johnson’s
business. That’s why he uses Koch Turf & Ornamental (Koch) products extensively at Lawn America.
“Koch is the nationwide leader as far as production of all enhanced
efficiency fertilizer products,” says Johnson. “They’re good, clean,
Johnson, president of Lawn America, based in Oklahoma City,
Oklahoma, has used enhanced efficiency fertilizer for years. Sometimes
Lawn America has to start a little earlier in the year than is
ideal before nitrogen release is needed on bermudagrass lawns. This
is when applications of enhanced efficiency fertilizer have helped.
“So, we crank it up pretty well and start out with a 70 percent
slow-release blend early on in spring, which would be late March into
April, and then bring it down to 50 percent later on in the season,”
Johnson says. “Even during summer, we’ll just about always have at
least a 25 percent slow-release component in there, whether it be
UFLEXX stabilized nitrogen or XCU slow-release fertilizer.
“If we were applying straight urea, you would have a surge of
growth for a week or two or three and then it would be all gone and
would quickly fade out. So, we’re trying to level out
that nitrogen response to where it’s not all up and down. We want it
to be a consistent color, but in our case, once we get into summer,
most of our customers are in a 5.5- to 6-step cycle. So we’re going
out there quite frequently for fertilization anyway, and in that case,
UFLEXX or XCU fertilizer seems to do a great job.”
Johnson offers programs featuring from four to seven applications,
with seven being his premium program and the one he tries
to promote the most.
“With that very best program, the customer is getting four applications
of granular fertilizer. With the six-step program, they get three,
and then the least they will get is two. For them to be a customer,
they have got to let us fertilize at least twice during the season.
That’s on bermudagrass and zoysia.”
Lawn America’s premium program supplies about 6 pounds of
nitrogen per 1,000 square feet over the course of a season—plenty,
Johnson says, for bermudagrass.
With fescue customers, he applies liquid organic soil amendments
in summer instead of granular fertilizer, so fescue customers
are only getting three applications of granular during the course of
“The soil amendments help the turf better utilize nutrients in
there, and the fescue just doesn’t need a whole lot of nitrogen in
summer, so we fertilize it well in spring and then two in fall and that
suffices,” Johnson says.
As far as planning out the year, timing, Johnson says, is critical.
His first regular application is weed control, which happens in early
February as the bermudagrass is dormant and doesn’t need fertilizer.
“Then we start to fertilize it in late March- April with a controlled-release
product, which allows us to put it out a little heavier than
normal. Also, we know the nitrogen will not go anywhere until the
soil temperature warms up and the plant actually needs that nitrogen
so we can get out before the turf starts greening up or while
it’s greening up rather than being late.”
If Johnson waited till May 10th before doing the first application
of fertilizer on bermudagrass, that’s later than ideal in Oklahoma.
Using more controlled-release fertilizer allows him to get ahead of
Lawn America always considers the environmental impact of its
programs, so Johnson says any time he can get better utilization of
nitrogen and not allow it to become volatile or leach, that’s a good
thing—from an agronomic standpoint, environmental standpoint
and cost standpoint.
“We’re all about being as efficient with our nitrogen as possible,”