Research Summary Abstract
From 2007 to 2017, IR-4 completed 637 trials on Freehand 1.75G (BAS 659 G; dimethenamid-p + pendimethalin).The data contained in this report was generated to register uses
of dimethenamid-p + pendimethalin on and around ornamental horticulture plants with broadcast applications, including over the top of established plants. The Freehand rates in this testing program were 2.65, 5.3 and 10.6 pounds active ingredient per acre (lb ai per A) as the 1X, 2X and 4X rates. Freehand 1.75G had been applied to 185 plant genera or species. Of these genera and species, 73 exhibited no or minimal transient injury after application at all three rates. Thirty three (35)crops exhibited little or no phytotoxicity at 2.65 lb ai per acre, but did have some injury at 5.3 and/or10.6 lb ai per acre, or showed injury after the second application. Twenty two (22) genera or species exhibited damage sufficient to recommend growers not utilize Freehand G as an over-the-top treatment for pre-emergent weed control. Of the fifty eight (58) crops that still need additional information, there are twelve (12) genera or species in which three or more trials do not show significant injury, but one or more additional trials shows some sort of notable injury, necessitating additional research. Additional trials are also indicated to establish species or cultivar sensitivities.