Fall/Winter Weed Control Program
Warm-season Fairways and Roughs
Aggressive seedhead of annual bluegrass allows exponential spread if left untreated in the fall. (Envu)
December 1
Month
September
October
November 1
Prioritized Options
Priority Explanation
Week 36 37 38 39 40 41
42 43 44 45 46 47 48 49 50 51
52
Specticle FLO 3,4,5 7- 10 fl. oz./A Apply Aug 15 – Sep 7 in areas west of inland valleys Apply Sep 15 – Oct 7 in the inland valleys of CA and high desert Apply Sep 7 – Oct 30 in the low desert
• Control of Poa annua through April
Good
PRE3 2 Specticle ® FLO 1 6 fl. oz./A + Tribute ® Total 1 oz./A + NIS 0.25% v/v + (Simazine 1 lb. ai./A or glyphosate (4 lbs. ai./gal.) 5 fl. oz./A) PRE3 2 Specticle ® FLO 1 3 fl. oz./A + Tribute ® Total 1 oz./A + NIS 0.25% v/v + (Simazine 1 lb. ai./A or glyphosate (4 lbs. ai./gal.) 5 fl. oz./A)
• Resistance Management • Control of Poa annua through April
Better
PRE3 1,3 Specticle ® FLO 1 3 fl. oz./A + (Simazine 1 lb. ai./A or glyphosate (4 lbs. ai./gal.) 5 fl. oz./A)
• Most Consistent Control • Resistance Management • Control of Poa annua through April
Best
Sand >85% or Soil Organic Matter <0.1%
Specticle FLO 1,3 3 fl. oz./A Apply 30-45 days after previous application
Specticle FLO 1,3 3 fl. oz./A Apply 30-45 days after previous application
Specticle FLO 1,3 3 fl. oz./A
Best
• Control through April
Follow all label directions and local recommendations. 1 If turf is dormant, non-selective herbicides like Roundup ® Pro can also be added to the tankmix to expand the number of MOA’s. 2 Read and follow all label directions especially with regards to applications around cool-season turf. Allow spray to dry prior to irrigation or rainfall. 3 Do not apply if turf injury is present and assess turf quality before each application. Do not apply during periods of excessive soil moisture
Annual bluegrass can germinate over a wide range of temperatures, so a preemergence herbicide is needed for most effective control. (Envu)
15
July, 2024
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