MEMORANDUM

Subject:	Mefluidide Use Closure Memo

		Includes Active Ingredients:	Mefluidide (ANSI) (114001) 

						Mefluidide, diethanolamine salt (114002) 

						Potassium mefluidide (114003) 

From:		Wilhelmena Livingston, Chemical Review Manager

Special Review and Reregistration Division

To:		Mefluidide Team Members

This memo serves as the mefluidide use closure memo and clarifies
mefluidide usage data for the Reregistration Eligibility Decision (RED)
risk assessments.  The risk assessments for mefluidide will be based on
the use sites and usage date in BEAD’s LUIS report, documents
presented by the registrants, and the product labels.

The SMART meeting for mefluidide was held on November 8, 2006, at which
time PBI Gordons Corp. (technical registrant) presented current
mefluidide use and usage information as requested by the Agency.

Mefluidide is a plant regulator that is applied postemergence, when
needed.  It is used to control ornamental and non-ornamental woody
plants, ground cover, hedges trees, turf grasses, grass and broadleaf
weeds by inhibiting plant cell division, stem elongation and seed head
development.  It is also registered for growth control of low
maintenance turf on rights-of-ways, airports, and industrial sites. 
There are multiple active ingredient products that contain an additional
plant growth regulator and herbicides such as, paclobutrazol, imazapyr,
and imazethapyr.  Current formulations include; granular, liquid-ready
to use, and soluble concentrate/liquid.   Mefluidide can be applied as a
band treatment, broadcast, spot treatment, and spray.  The equipment
used to apply mefluidide includes; backpack sprayer, boom sprayer,
ground equipment, hand held sprayer, handgun, hose-end sprayer, power
sprayer, pressure sprayer, and spreader. 

	The uses that will be included in the reregistration assessment are; 
agricultural/farm structures/buildings and equipment,
agricultural/nonagricultural uncultivated areas/soils, airports/landing
fields, commercial industrial lawns, commercial institutional/industrial
premises/equipment (indoor/outdoor), golf course turf, hospitals/medical
institutions premises (human veterinary), household domestic dwellings
outdoor premises, industrial areas (outdoor), nonagricultural outdoor
buildings/structures, nonagricultural rights-of-way/fencerows/hedgerows,
ornamental and or shade trees, ornamental ground cover, ornamental
herbaceous plants, ornamental lawns and turf, ornamental nonflowering
plants, ornamental woody shrubs and vines,

paths/patios, paved area (private roads/sidewalks), recreational areas,
and residential lawns. 

	The two registrants for mefluidide, PBI/Gordon (technical registrant)
and The Scotts Company (end-use registrant) are supporting all of the
uses for reregistration on their respective labels.

	

	Usage information on mefluidide can be found in the attached table.  If
you have any questions or concerns regarding this memorandum, please
contact Wilhelmena Livingston, at (703) 308-8025.

Attachments

Table A3

cc:	Nancy Andrews

	Thuy Nguyen

	Jim Hetrick

	Marie Janson

	Ray Kent

	Yan Donovan

	David Jaquith

	Cynthia Giles-Parker

	Tony Kish

	John Bazuin

	Robert Mcnally

	  

