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This is growing profusely amongst mats of curlyleaf pondweed. I assume it is fanwort. I applied 10 ppb of fluridone a week ago for the curlyleaf pondweed. Will that control the fanwort also? ![[Linked Image from i.imgur.com]](https://i.imgur.com/RuwO86J.jpg) ![[Linked Image from i.imgur.com]](https://i.imgur.com/TuPVwlU.jpg)
Last edited by Knobber; 04/11/26 07:49 PM.
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Moderator Lunker
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No idea, but good pictures!
"Live like you'll die tomorrow, but manage your grass like you'll live forever." -S. M. Stirling ![[Linked Image from i.pinimg.com]](https://i.pinimg.com/736x/ed/b5/e7/edb5e7f935843b996cf52be593c9ebd2--smoothie-smooth-collie.jpg)
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Knobber |
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2 Acre, Completed July 2022, CC,BG, Sept. 2022, LMB June 2023, GSF, YBH invasion in 2022. BG, CNBG, RES, 2025, TP seasonal.
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At your 10ppb concentration you could see some fanwort control. If it were my pond based the journal article I would treat again as another 10ppb or add a second treatment of 20ppb. Another option is to add a 2nd 10 ppb and watch the results. The 2nd fluridone 10ppb bump, if not a long delay from the 1st dose, may be enough accumulative effect to significantly reduce fanwort? Long delay = >2weeks and by then some of the first 10ppb will have dissipated. . Then if there is poor Fanwort control this year, next year treat real early as soon as new growth is seen with 20-25ppb. Treating very early in the growth phase works best for control of fanwort. Report your results for all to learn. Reference - https://apms.org/wp-content/uploads/japm-40-02-058.pdfIn conclusion, the data from these studies showed that under these experimental conditions, the dose of fluridone required to substantially reduce fanwort growth (20 µg L-1 reduced biomass >80%), also severely impacted water marigold growth. (1ug/L = 1ppb).
Last edited by Bill Cody; 05/16/25 06:44 PM.
aka Pond Doctor & Dr. Perca Read Pond Boss Magazine -
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