Research has shown fall is the time to start controlling next spring’s annual bluegrass seedheads since seedhead formation is initiated in fall under shorter days and cooler temperatures. Applications of Proxy ® in late fall plus spring improve control and consistency of control over the traditional spring-only applications. Annual Bluegrass Seedheads
Application
Timings
Product and use rate per 1,000 st. .
Proxy ® 5 . oz. + Stressgard ® -containing fungicide
With the snow mold fungicide application or aer growth slows
Late fall application
Always more eective to be early than late on spring applications. Initial application can be scheduled by: • Boot stage of annual bluegrass seedhead • Forsythia bloom • 150-200 Growing Degree Days base 32 (GDD32) starting January 1st • 50 GDD50 starting February 1st
Proxy 5 . oz. + Stressgard-containing fungicide
First spring application
Proxy 5 . oz. + (Primo Maxx ® 0.125 . oz. or Anuew ® 2 . oz./A or Anuew EZ 4.4 . oz./A and/or Stressgard-containing fungicide) Proxy 2.5 . oz. + (Primo Maxx 0.063 . oz. or Anuew 1 . oz./A or Anuew EZ 2.2 . oz./A) Proxy 5 . oz. + (Primo Maxx 0.125 . oz. or Anuew 2 . oz./A or Anuew EZ 4.4 . oz./A)
Second spring application
3-4 weeks aer initial spring application
2-week intervals
Additional applications until seedhead production ceases
4-week intervals
Annual bluegrass can produce seedheads during an extended period. Control starts with Proxy ®
Poa annua seedheads aect smoothness of greens. Control with Proxy ® improves puability and speed. (Envu)
applied when mowing slows in the fall. (Envu)
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July, 2024
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