ProForce Duke Herbicide.
ProForce Duke is a selective turf herbicide that controls grass and broadleaf weeds. It is a Destiny herbicide alternative and contains iodosulfuron-methyl.
Duke is a sulfonylurea herbicide and so is in FRAC Group 2. This group also contains the Monument herbicide alternative (ProForce Recondo) and Tribute herbicide. This free herbicide resistance chart will help you with a resistance management strategy when you use this product.
Table of Group 2 Herbicides for Turf.
Product | Active | Chemical Group | Rate/Ha | Weeds controlled | Kikuyu | Buffalo | Reseeding Interval | Comments |
Duke | 100 g/Kg Iodosulfuron-methyl | 2 | 25-150g | Bindii, Black Thistle, Catsear, Cotula, Cudweed, Guildford (Onion) Grass, Medic, Mouse Ear Chickweed, Oxalis, White Clover, Onion Weed and False Onion Weeds, Ryegrass, and Wintergrass (Suppression), | Safe | Yes | 6 weeks | High level of safety on Couch, Kikuyu and most Buffalo varieties. Broad spectrum of weed control. |
Tribute Turf Herbicide | 22.5 g/L Foramsulfuron | 2 | 2L | Crowsfoot Grass, Ryegrass, Wintergrass, Goose grass,Paspalum | Suppression | No | 1 week | |
Coliseum | 250 g/kg Rimsulfuron | 2 | 75-120g | Ryegrass, Wintergrass | Suppression | No | 7 - 10 days | Ideally apply when weeds are at the 1 -4 leaf stage. |
Prosedge | 750 g/Kg Halosulfuron Methyl | 2 | 65-140g | Mullumbimby couch Nutgrass | Safe | Yes | None | |
Recondo | 100 g/Kg Trifloxysulfuron | 2 | 115-300g | Burr Medic, Mullumbimby Couch, Nutgrass, Bindii, Ryegrass, Wintergrass, Catsear, Chickweed, Clover, Cotula, Creeping Oxalis, Curled Dock, Milk Thistle | Suppression | No | 6 weeks | The addition of a quality non-ionic surfactant at a rate of 0.25% v/v (1000 g ai/L products), 0.42% v/v (600 g ai/L products) or Hasten at 1%v/v is strongly recommended. |
How Does Duke Work?
ProForce Duke inhibits the acetolactate synthase (ALS) enzyme in susceptible plants. Plants need this enzyme to produce certain amino acids, and this inhibition disrupts the normal growth of weeds, and leads to their death.
How Safe is Duke Herbicide on Turf?
With excellent safety on couch and on kikuyu, this turf chemical gives great control of several common turf weeds. This includes Clover, Bindii and Ryegrass. It also has unique efficacy against Onion Weed and Guildford grass (Onion Grass).
Do NOT use ProForce Duke on Qld Blue Couch.
You can tank mix Duke with Tribute Selective herbicide. This gives gives better control of turf-type perennial ryegrass and Winter Grass than when you use it by itself.
Due to being “sticky” Duke Herbicide can leave a residual in a spray tank after use. We recommend the use of Tank Aid to effectively clean any residual out of the tank and avoid spray contamination.
Benefits of Duke Herbicide.
- Available in both a 100 g and 500 g pack size;
- Gives good control of many hard to kill weeds;
- It is a great option to transition ryegrass to couch grass;
- Has a high level of safety on couch, Kikuyu and most varieties of buffalo grass;
- Duke Herbicide has a broad spectrum of control;
- You can use this at a very low use rate;
- It has a low impact on the environment.
- You can mix it with Vertmax Duo turf pigment and Vertmax pigment to retain heat and give a quicker result.
If you have questions or concerns about the use of Duke, please feel free to contact a sports turf consultant or turf agronomist.