Semera 51% WDG

Semera 51% WDG

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Product Overview

Semera 51% WDG is a fast acting pre-emergent and post-emergent herbicide that provides residual control of selective broadleaf weeds and grasses in  warmer season turf grasses that are dormant in areas such as golf courses, sod production farms, and areas similar. The herbicide does not volitive and move off target which makes it effective in helping to maintain bare ground non-crop areas. Semera is also used to control selective emergent, floating, and submersed aquatic weeds in slow moving or quiescent bodies of water. To be the most effective, application to bodies of water should take place when weeds are young and actively growing and the pH of the water is less than 8.5. Semera 51% is a water disposable granule that is a great tank mix partner and application options are flexible. 


Features and Specs

Active Ingredient Flumioxazin - 51%
For use in Field grown and container grown conifers and deciduous trees, quiescent and slow moving bodies of water, non- crop areas, established ornamentals and landscapes, and turf grass grown on residential sites.
Application Broadcast Application: Apply Semera 51% and tank mixes with ground equipment using commercial sprayers that are designed to deliver the desired spray volume and pressure.

Band Application: Use proportionately less water and herbicide per acre.

Handgun Application: Use a spray volume of at least 40 gallons per acre to provide a uniform coverage.

Backpack Application: Follow all restrictions listed on label and set sprayers to deliver 1 gallon of solution for every 500-1000 sq.ft.

For aerial application please refer to the product label.
Pet safe Yes, if used as directed on label.
Formulation Water dispersible granule.
NY, ME (Restricted To Licensed Applicators Only)
Shipping Weight 5.55 lbs
Manufacturer Atticus LLC
EPA Registration 91234-204


For Terrestrial Uses

Pre-emergence Application: Weed control is the most effective when it is applied to weed-free and clean soil surfaces before weed emergence. It is necessary to apply Semera in a moist environment, if it is too dry the effectiveness of the herbicide may be reduced. If the proper amount of moisture is not received post application, weed control can still be maintained by shallow cultivating 

Post-emergence Application: Weed control is the most effective when Semera is combined with a surfactant to weeds that are less than 2 inches high. Apply only to actively growing weeds in sunny weather and temperatures are greater than 65 degrees. Semera is rainfast one hour after application, so do not apply if rainfall is expected within one hour after. 

For Aquatic Uses

Pre-Emergence Application: Use at least 10 gallons of spray solution per acre when using boom sprayers to ensure a uniform coverage. Apply 50-100 gallons of spray solution per acre when making backpack applications. 

Post-Emergence Application: Use at least 15 gallons of spray solution per acre when using boom sprayers to ensure a uniform coverage. If there the vegetation is dense or if there is a heavy residue on the soil surface, apply atleast 20 gallons per acre. Apply 1 gallon of spray solution for every 500-1000 sq.ft when using a backpack sprayer. 

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