Aggressive seedhead of annual bluegrass allows exponential spread if left untreated in the fall. (Envu)
Month
September
October
November
December
Prioritized Options
Priority Explanation
Week 36 37 38 39 40 41
42 43 44 45 46 47 48 49 50 51
52
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) 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 + (Simazine 1 lb. ai./A or glyphosate (4 lbs. ai/gal.) 5 fl. oz./A)
• Most Consistent Control • Resistance Management • Control through April
1A
• Most Consistent Control • Resistance Management • Control through April
1B
2
• Control through April
Specticle FLO 1 9 fl. oz./A
Sand >85% or Soil Organic Matter <0.1%
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)
PRE3 2 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 through April
1
Specticle FLO 1 3 fl. oz./A Apply 30-45 days after previous application
Specticle FLO 1 3 fl. oz./A Apply 30-45 days after previous application
Specticle FLO 1 3 fl. oz./A
2
• Control through April
1 Do not apply if turf injury is present and assess turf quality before each application. Do not apply during periods of excessive soil moisture. 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.
Annual bluegrass can germinate over a wide range of temperatures, so a preemergence herbicide is needed for most effective control. (Envu)
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