Primo applications every 2 weeks on greens Cancel The title field is required!

1. Steven Aitken

   

   5 posts
   
   4/12/2017 12:04 PM

   I have always used growing degree days to calculate my next application of Primo on my Poa/ Bent greens and have had great success. Due to scheduling I'm looking at going to every 2 weeks for the Primo application and increasing the amount of Primo per application. What would be the rate you could use to produce the same results during the height of the growing season? My rate per application during the our highest growth rate period is .190oz per 1000 sq feet
   
   Thank you in advance for your responses,
   
   Best,
   
   Steve
   
   Steve Aitken CGCS
   Aspen Golf Club
   Aspen, Colorado
   steve.aitken@cityofaspen.com

   
   
   
   
2. Larry Allan

   

   0 posts
   
   4/12/2017 1:04 PM

   My understanding is that the 200 GD method is an absolute regardless of the amount applied. More will get you greater suppression during the period, but it won't last any longer...I think

   
   
   
   
3. Steven Aitken

   

   5 posts
   
   4/12/2017 1:04 PM

   Thank you Larry, This has always been my thought as well. I was told recently that you could take the rate to .22 oz/1000 every 2 weeks and create the same effect as if you were on the growing degree day program which during the peak of our season equates to sending the sprayer out every 9 days at .19 oz per 1000.

   
   
   
   
4. Melvin Waldron

   

   43 posts
   
   4/12/2017 4:04 PM

   I agree with Larry, from what I've been told it doesn't matter the rate, at 200 GDD is when it runs out. According to the sheet there is still about 10% suppression compared to non treated turf, when it hits 200 GDD, you might play with the numbers it might work at 14 days for you? I do know for us most of the summer we can only go 7 days. Late spring/early fall, it's about 10 days, early spring and late fall it's 14, maybe a couple of more.
   
   Mel

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

   

   5 posts
   
   4/12/2017 11:04 PM

   Mel,
   Our intervals are a little longer up here at 8.000 feet in elevation, as it just isn't very warm much of the year. Thank you for your input, I agree with both you and Larry on your assessment that Growing Degree Days are the only way to monitor when it is time to reapply Primo. Have a successful 2017 season!
   Steve

   
   
   
   
6. Christopher Thuer

   

   101 posts
   
   4/18/2017 7:04 PM

   As we have no time to spray G, T, Ap, and fw more than every two weeks that is what we do. It would be nice to have more flexability.

   
   Chris Thuer, CGCS, Bear Slide Golf Club, Cicero, IN
   
   
7. Kenneth Ingram

   

   18 posts
   
   4/19/2017 7:04 AM

   Steven look into Bill Krueser's work at Nebraska. He has a mobile app called Greenkeeper I think. It's available if you search Nebraska Turf Education, etc. You can enter weather data and it predicts PGR breakdown. Great stuff. Kenneth Ingram, UMD

   
   
   
   
8. Eric Johnson

   

   1 posts
   
   4/19/2017 8:04 AM

   http://greenkeeperapp.com/marketing/#
   
   Here's the link to the greenkeeperapp. Easy registration and setup

   
   
   
   
9. Clay Putnam

   

   33 posts
   
   4/20/2017 10:04 AM

   Eric Johnson said: http://greenkeeperapp.com/marketing/#
   
   Here's the link to the greenkeeperapp. Easy registration and setup

   
   
   Interesting concept. But it's not working; unable to input sprayer info, no product information... When will you have it functional?

   
   
   
   
10. David Brandenburg

    

    3 posts
    
    4/20/2017 10:04 AM

    Steven,
    
    We struggled to try to keep up with the GDD and the growth surges as the primo ran out every 5 to 9 days. We have added Trimmit at 1 to 1.5 oz per acre each application to cover the gap and be able go the 2 weeks without worry about the up and down growth rates.
    
    I had never used Trimmit before and was a little nervous about it but for us on greens tees and fairways in our tank mix it worked great.

    
    
    
    
11. Eric Johnson

    

    1 posts
    
    4/20/2017 11:04 AM

    Clay Putnam, CGCS said:

    Eric Johnson said: http://greenkeeperapp.com/marketing/#
    
    Here's the link to the greenkeeperapp. Easy registration and setup

    
    
    Interesting concept. But it's not working; unable to input sprayer info, no product information... When will you have it functional?

    
    
    the email contact: GreenKeeperApp@unl.edu
    
    this website is offered through University of Nebraska-Lincoln Turf. I am merely a user.

    
    
    
    
12. Clay Putnam

    

    33 posts
    
    4/20/2017 3:04 PM

    Eric Johnson said:

    Clay Putnam, CGCS said:

    Eric Johnson said: http://greenkeeperapp.com/marketing/#
    
    Here's the link to the greenkeeperapp. Easy registration and setup

    
    
    Interesting concept. But it's not working; unable to input sprayer info, no product information... When will you have it functional?

    
    
    the email contact: GreenKeeperApp@unl.edu
    
    this website is offered through University of Nebraska-Lincoln Turf. I am merely a user.

    
    
    My apologies. Was the site fully functional for you?

    
    
    
    
13. John Westermeier

    

    0 posts
    
    4/20/2017 7:04 PM

    Clay,
    
    Fully functional for me. Easy registration and setup.
    
    John Westermeier,CGCS
    Twin Lakes Golf Club
    Carmel, Indiana 46032

    
    
    
    
14. Eric Johnson

    

    1 posts
    
    4/21/2017 8:04 AM

    Clay Putnam, CGCS said:

    Eric Johnson said:

    Clay Putnam, CGCS said:

    Eric Johnson said: http://greenkeeperapp.com/marketing/#
    
    Here's the link to the greenkeeperapp. Easy registration and setup

    
    
    Interesting concept. But it's not working; unable to input sprayer info, no product information... When will you have it functional?

    
    
    the email contact: GreenKeeperApp@unl.edu
    
    this website is offered through University of Nebraska-Lincoln Turf. I am merely a user.

    
    
    My apologies. Was the site fully functional for you?

    
    
    Yes. I've been registered and using it since 2016. Could be the problem is browser related? I'm on Edge (no pun intended) with no issues. Well, no browser issues! I'll look around to see if there have been any emails re: browser preferences.

    
    
    
    
15. Eric Johnson

    

    1 posts
    
    4/21/2017 8:04 AM

    Clay Putnam, CGCS said:

    Eric Johnson said:

    Clay Putnam, CGCS said:

    Eric Johnson said: http://greenkeeperapp.com/marketing/#
    
    Here's the link to the greenkeeperapp. Easy registration and setup

    
    
    Interesting concept. But it's not working; unable to input sprayer info, no product information... When will you have it functional?

    
    
    the email contact: GreenKeeperApp@unl.edu
    
    this website is offered through University of Nebraska-Lincoln Turf. I am merely a user.

    
    
    My apologies. Was the site fully functional for you?

    
    
    looking at the most recent email update, MS Internet Explorer is the only browser not compatible for GreenkeeperApp. Edge, Firefox, Chrome and Safari are all on the good list.

    
    
    
    
16. Christopher Thuer

    

    101 posts
    
    4/21/2017 10:04 AM

    David Brandenburg, CGCS said: Steven,
    
    We struggled to try to keep up with the GDD and the growth surges as the primo ran out every 5 to 9 days. We have added Trimmit at 1 to 1.5 oz per acre each application to cover the gap and be able go the 2 weeks without worry about the up and down growth rates.
    
    I had never used Trimmit before and was a little nervous about it but for us on greens tees and fairways in our tank mix it worked great.

    
    
    David,
    
    Be careful about letting it known on this forum that you tank mix 2 growth regulators as you may get "The Letter" from a certain manufacturer claiming they have the intellectual property of doing so.

    
    Chris Thuer, CGCS, Bear Slide Golf Club, Cicero, IN
    
    
17. Steven Aitken

    

    5 posts
    
    4/25/2017 4:04 PM

    Thanks David,
    
    So Primo with Trimmit, you can get to a two week interval of spraying during the peak of growing season. That would be greatly helpful. That will eliminate a few applications during the season and also providing for a scheduled day every two weeks for application. Do you add any quicksilver to this mix as well for moss control?
    
    Thank you for your input.
    
    Steve
    
    Steve Aitken CGCS
    Aspen Golf Club
    Aspen, Colorado
    81611

    
    
    
    
18. Steven Aitken

    

    5 posts
    
    4/25/2017 10:04 PM

    Chris,
    Thank you for your response on this. Clearly you have been utilizing this chemistry for a substantial length of time with great confidence. I am looking forward to utilizing this approach in 2017 for improved results.
    
    Steve
    
    Steve Aitken CGCS
    Aspen Golf Club
    Aspen, Colorado
    81611
    ]

    
    
    
    
19. David Brandenburg

    

    3 posts
    
    4/28/2017 2:04 PM

    Steve,
    
    I have added the quicksilver for blanket applications but our moss is limited so I usually spot treat for it. I have mixed it with Provaunt insecticide, most fungicides, Urea and Iron.
    
    
    

    Steven Aitken, CGCS said: Thanks David,
    
    So Primo with Trimmit, you can get to a two week interval of spraying during the peak of growing season. That would be greatly helpful. That will eliminate a few applications during the season and also providing for a scheduled day every two weeks for application. Do you add any quicksilver to this mix as well for moss control?
    
    Thank you for your input.
    
    Steve
    
    Steve Aitken CGCS
    Aspen Golf Club
    Aspen, Colorado
    81611

    
    
    
    
20. Steven Aitken

    

    5 posts
    
    4/28/2017 7:04 PM

    David,
    
    Thanks for the additional information on Quicksilver, nutrients, and plant protectants that can be added to this mix/blend.
    
    Very helpful. I am looking forward to trying this out in 2017.
    
    Steve

    
    
    
    
21. Melvin Waldron

    

    43 posts
    
    4/30/2017 9:04 AM

    Those using the Primo/Trimmit mix, do you see any reduction on the poa at the light rates of Trimmit? Or is it just to get you 14 days of regulation?
    
    Anyone using that combo in the transition zone all summer?
    
    And what do I do with my neat GDD chart if I go this route?
    
    Thanks,
    
    Mel

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