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Need expert help Ronk etc.! Bermuda infiltration in St. Aug.
Posted on 5/25/25 at 6:15 pm
Posted on 5/25/25 at 6:15 pm
Live on golf course with Bermuda infiltrating my St.Aug . I cut at 3 1/2.”. Went to site 1 wanting post emerge with Celsius and nitrogen. Had none so gave me Hotshot 0-0-7 with Atrazine. Also bought Lesco Nos plus 24-2-11. I’ve read that the atrazine will stunt the Bermuda and not the St. Aug. Thought I might put the atrazine down and a few days later the NosPlus. Thoughts on this plan.???? Thanks.!!
Posted on 5/25/25 at 6:48 pm to hondo
Posted on 5/25/25 at 8:23 pm to bayoubengals88
Thanks. I have read about the Recognition and Fusilade combo. 2 things: It’s expensive and I haven’t read any clear cut directions on how to mix those 2 in a 1 or 2 gallon pump sprayer.
Any idea about mixing those to in a pump sprayer.?
Any idea about mixing those to in a pump sprayer.?
Posted on 5/25/25 at 8:34 pm to hondo
This ain’t easy math in my book so I usually ask AI for help. Just a suggestion. 
Posted on 5/25/25 at 8:38 pm to bayoubengals88
Thanks. How in the world do I measure.04 oz.?
Posted on 5/25/25 at 8:38 pm to hondo
You’re going to like what you see on Page 2 of 7 from this thread (The Lawn Forum).
Posted on 5/25/25 at 8:40 pm to hondo
quote:quarter tspn. Get you a set on Amazon. They go down to 1/64th
How in the world do I measure.04 oz.?
From Grok:
quote:
0.04 oz of liquid is approximately 0.24 teaspoons (tsp).
This conversion assumes the liquid is water or has a similar density, as 1 fluid ounce equals approximately 6 teaspoons. So, 0.04 oz × 6 tsp/oz = 0.24 tsp.
Posted on 5/26/25 at 1:31 am to hondo
quote:
Thanks. How in the world do I measure.04 oz.
When you buy the product it comes with a measure spoon
Posted on 5/26/25 at 7:44 am to hondo
quote:
How in the world do I measure.04 oz.?
This cheap scale from amazon has been my best friend for stuff like this.
ETA: For the recognition combo I’ve been following the Lawn Care Nut’s guidance and it has been working out very well for me.
quote:
Recognition Herbicide Application Rates
1 acre = 43,500 sq ft
1.29 / 43.5 = .03 oz
1 oz = 28 grams
.03 oz = .85 grams
So the rate converted to grams is .85 grams / 1,000 sq ft
1 gallon of spray mix covers 1,000 sq ft
Fusilade2 Herbicide rate: 24 oz / acre
This is a liquid concentrate so the rate here is expressed in volume. This means you can use a measuring cup to measure out the product.
1 acre = 43,500 sq ft
24 oz / acre
24 / 43.5 = .55
So the rate of Fusilade2 is .55 oz / 1,000 sq ft
1 gallon of spray mix covers 1,000 sq ft
Surfactant
There is also a recommendation to use surfactant. I have non-ionic surfactant and I used 1 oz / gallon.
I mixed up 3 gallons which is enough to cover 3,000 sq ft. If you also want to mix up 3 gallons, this is your fill sheet:
3,000 sq ft
3 gallons
.85 x 3 = 2.55 grams of RECOGNITION herbicide
.55 x 3 = 1.65 oz FUSILADE2 herbicide
3 oz non-ionic surfactant
This same mix can be used on St Augustine grass and Zoysia grass as a broad leaf weed killer and to eliminate the bermuda grass that may be invading. Here are some other best practices to follow:
No watering or rain for at least 3 hours. That’s the minimum amount of time they want you to leave it sitting but if you can let it go overnight that’s even better. Let that stuff soak in!
This post was edited on 5/26/25 at 7:55 am
Posted on 5/26/25 at 10:30 am to hondo
quote:
Thanks. How in the world do I measure.04 oz.?
Others have answered with good information but .04 oz is 1.14 cc's (or ml's).
A TB syringe will get you on exactly that.
If you happen to know anyone that has them or can get them.
ETA...DOH! We talking granules here?
This post was edited on 5/26/25 at 10:32 am
Posted on 5/28/25 at 11:29 pm to DMAN1968
Thanks for the help everyone.! I just hate to nuke the part of my yard that has Bermuda for a month or 2.!
Posted on 5/29/25 at 10:39 am to hondo
quote:
Thanks for the help everyone.! I just hate to nuke the part of my yard that has Bermuda for a month or 2.!
Why would you have to do this? Recognition fuilsade mix doesn't nuke the lawn.
Posted on 5/29/25 at 12:58 pm to CenlaLowell
Yea the Bermuda just turns purple and fades out. Recognition doesn’t hurt the st Aug.
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