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Algae on greens.

13 posts
  1. John Monson
    John Monson avatar
    0 posts
    5/28/2014 1:05 PM
    We have a green in central Minnesota that for the last 3 years develops quarter size algae spots. They were all removed two years ago but more come back each year worse than the prior year. Any chemical that could be sprayed on the green to kill them. They are the pits. John Monson GCSAA



  2. Larry Stowell
    Larry Stowell avatar
    0 posts
    5/29/2014 9:05 AM
    Check this report out, Chlorothalonil is the product of choice. Avoid the use of organic fertilizers that stimulate microbial growth.

    http://www2.gcsaa.org/GCM/2006/nov/pdfs ... _Nov06.pdf



  3. Melvin Waldron
    Melvin Waldron avatar
    43 posts
    5/29/2014 10:05 AM
    Larry Stowell said: Check this report out, Chlorothalonil is the product of choice. Avoid the use of organic fertilizers that stimulate microbial growth.

    http://www2.gcsaa.org/GCM/2006/nov/pdfs ... _Nov06.pdf


    Great article, has there been any follow-up research since this research was completed?

    Thanks!

    Mel

    Melvin H. Waldron III, CGCS, Horton Smith Golf Course, City of Springfield/Greene County MO

  4. Randall Boudinot
    Randall Boudinot avatar
    4 posts
    5/29/2014 2:05 PM
    I have always used Fore (Mancozeb) to control algae on greens.

    Randy Boudinot
    Walnut Grove Country Club
    Dayton, Ohio



  5. Keith Fellenstein
    Keith Fellenstein avatar
    0 posts
    6/2/2014 9:06 AM
    Turfscreen works beautifully.



  6. Canedo Alberto J
    Canedo Alberto J avatar
    6/2/2014 12:06 PM
    Zerotol works great.



  7. Larry Stowell
    Larry Stowell avatar
    0 posts
    6/3/2014 9:06 AM
    Mel,

    To my knowledge, there has not been additional research on cyanobacteria biology and management. Research funding continues to decline and with researchers like Dr. Frank Wong and Dr. Lane Tredway moving to industry, it is less likely that much new research is going to be conducted on these incredibly interesting organisms. The up side is that we know how to manage the cyanobacteria - reduce shade, avoid the use of organic fertilizers that stimulate cyanobacteria if cyanobacteria are a problem and treat with chlorothalonil (mancozeb is ok) if cultural practices fail. As mentioned above, some other products might also work.



  8. Larry Allan
    Larry Allan avatar
    0 posts
    6/5/2014 9:06 AM
    In at study of different nitrogen sources done at Rutgers I believe, showed that plots using ammonium sulphate had zero algae compared to blends and straight urea. They were investigating something else and accidentally found no algae in the ammonium plots.



  9. Larry Stowell
    Larry Stowell avatar
    0 posts
    6/6/2014 4:06 AM
    Larry is right. Kaminski demonstrated that 21-0-0 amd phosphites can be effective.

    http://tgmasa.org/wr-pdv/wp-content/upl ... _Algae.pdf



  10. Kennedy Devan
    Kennedy Devan avatar
    6/15/2014 8:06 AM
    There was a webinar out a few weeks back that mentioned Dawn Ultra works to remove algae/moss, worth a try

    http://plantscience.psu.edu/research/ce ... ing-greens



  11. Keith Pegg
    Keith Pegg avatar
    0 posts
    6/15/2014 3:06 PM
    Larry Allan said: In at study of different nitrogen sources done at Rutgers I believe, showed that plots using ammonium sulphate had zero algae compared to blends and straight urea. They were investigating something else and accidentally found no algae in the ammonium plots.


    Fuuny I remember Dr Roy Goss WA State saying this 35 years ago. Also Poa decline, Fungus Decline, and less problems. All with AMM SUL

    Keith



  12. Cory Seedorf
    Cory Seedorf avatar
    0 posts
    10/28/2015 4:10 PM
    I have walked into greens at two locations that had moss problems. I ran a Smithco Deep Verticutter at 1.5" to 1.75" through them and went to hand watering almost exclusively for a couple years. Have not had any presence of moss for years. We deep verticut annually and aerify with 1/2" tines at 2x2 spacing, cut at aggressive heights of cut, typically .110 to .120 with unforgiving John Deere 18" walkers or triplexes. Point...I should have moss but I don't...in my opinion you need to eliminate the organic matter that has accumulated near the surface in order dry out the upper profile...then you won't need chemical control...that has been my experience anyway...



  13. Kirby Keltner
    Kirby Keltner avatar
    0 posts
    3/18/2016 8:03 AM
    I have also found quicksilver to be very effective. I believe the label calls for to 5oz rates 2 weeks apart then down to a 1oz rate. I noticed last year during the first two apps that the algae went from green to black and the bent was able to creep into it. I also timed my apps for the same day I did aggressive verticutting. The quicksilver killed the spores that were released and the verticutting allowed the app to really get down into the algae. Pair that with keeping the surface dry and the proper fert. and you should be in business.



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