Ammonium nonanoate (Axxe)
Rate A 10 to 13% volume to volume (v/v) dilution (13 to 16 fl oz.per gal water) is recommended for most weed control situations and based on the results.
Time Apply to dry plant material, that will remain dry (no rain/no irrigation) for > 2 hr.
Remarks OMRI certified non-selective herbicide for commercial use. Do not allow spray to contact any green plant parts of desirable plants. Provides control and burndown suppression of annual and perennial broadleaf and grass weeds. Spore producing plants such as mosses and liverworts are also controlled.
Caution Causes serious eye irritation.
Site of action N/A
Chemical family N/A
clethodim (Envoy Plus)
Rate 0.09 to 0.24 lb ai/A (12 to 32 fl oz) with max of 64 fl oz/season
Time For selective postemergence grass control. Apply postemergence to actively growing annual or perennial grasses as listed on the label. Consider environmental and plant growth conditions that affect leaf uptake; see label for guidelines.
Caution Do not exceed 68 fl oz/A per season.
Site of action Group 1: acetyl CoA carboxylase (ACCase) inhibitor
Chemical family Cyclohexanedione
fluazifop (Fusilade II or Ornamec Over-the-Top)
Rate 0.25 to 0.375 lb ai/A (1 to 1.5 pints/A Fusilade II)
Time Apply to actively growing grasses or within 7 days after irrigation with 0.25% nonionic surfactant.
Remarks May be used in greenhouses. Applied over the top of nursery plants for selective postemergence grass control. Identify grasses and adjust rates depending on susceptibility and stage of weed growth according to label instructions. Note lists of ornamentals and associated instructions regarding topical versus directed sprays. Results often are erratic on grasses stressed from lack of vigor, drought, high temperature, or low fertility. More mature grasses and quackgrass can be controlled but may require two applications. Annual bluegrass and all fine fescues resist treatment. Inhibits fatty acid production, cell membranes, and new growth.
Caution Do not tank mix with other pesticides or apply within 5 days of other pesticides. Grazing is prohibited. Do not apply to grasses which have tillered, formed seed heads, or exceeded listed growth stages. Do not apply to trees, vines, or other listed crops that will be harvested for food/feed within 1 year after application. Maintain a minimum of 14 days between applications. Do not apply a total of more than 72 fl oz of Fusilade DX Herbicide per acre per year (1.125 lb ai/A). Do not apply more than 24 fl oz of Fusilade DX Herbicide per acre per application (0.375 lb ai/A). Do not make more than 3 applications per year.
Site of action Group 1: acetyl CoA carboxylase (ACCase) inhibitor
Chemical family Aryloxyphenoxy propionate
sethoxydim (Segment or Vantage)
Rate 0.28 to 0.47 lb ai/A (36 to 60 fl oz/A)
Time Apply at optimum growth stage indicated on label.
Remarks For selective postemergence grass control. Identify susceptible grasses. Control often is erratic if grasses are stunted or stressed from drought, high temperatures, or low fertility. Resistant grasses include annual bluegrass and all fine fescues, but quackgrass can be suppressed. Inhibits fatty acid production, cell membranes, and new growth.
Site of action Group 1: acetyl CoA carboxylase (ACCase) inhibitor
Chemical family Cyclohexanedione