October 10, 2010
Since I posted the
information on the amount of Bermudagrass showing up in Iowa, I have had a
number of questions on how to kill it.
Roundup is the standard answer, but it is very hard to kill. I have also heard from former students in
Bermudagrass country about its control.
Below are two recommendations.
Notice that these come from other states and that pesticide labeling and
recommendations vary by state. Check
labels for use of these products in your locations.
The first is as follows:
In our region, we use a combination of Roundup and Turflon (Triclopyr) Ester.
Tank mix Roundup is 3oz/1000ft2 and Turflon at
2oz/1000ft2. Be careful with seeding cool-season grasses back
into the area. If seeded within 3 days, you'll see about 50-75%
germantion on the cool-season seed. If you wait 2 weeks, you'll see
anywhere from 75-100% germination.
(You can also find a number
of articles on the internet about using Turflon Ester to control Bermudagrass.)
The second from another
location includes Roundup and Fusilade in a tank mix, followed by Tupersan.
The
aggressive way of killing Bermudagrass is to apply Roundup at 4 oz/1000
ft2 with Fusilade at 2
oz/1000 ft2 in a tank mix combination. It may take a repeat application
You
can then use Tupersan at 14-16 oz /1000 ft2 as a follow
up. Tupersan will hold back the Bermuda
and you can seed into it.
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