SYMPTOMOLOGY

Weed growth is inhibited within hours after application yet visible symptoms typically require 1 or more weeks before becoming evident – the meristematic regions become chlorotic followed by slow, general foliar color changes and necrosis. Eventual plant death usually occurs within 1 to 4 weeks after treatment. The speed of symptom development varies with temperature and will be faster at warmer temperatures.

MODE OF ACTION
The active ingredients found in TRIBUTE TOTAL inhibit the protein acetolactate synthase (ALS), also known as acetohydroxyacid synthase (AHAS). The ALS enzyme catalyzes the first step in the biosynthesis of the essential branched chain amino acids (valine, leucine,and isoleucine). The lowered levels of ALS enzyme and branched chain amino acids trigger further biochemical events culminating in the death of the weed.

RESISTANCE MANAGEMENT
Some weed species have naturally occurring biotypes within their population which are resistant to ALS-inhibiting herbicides (Group B/2 Herbicides). Repeated application of an ALS herbicide may select for these resistant weed biotypes. To prevent or delay the build-up of ALS resistant weeds, always use the prescribed herbicide rate and application timing for the hardest-to-control weed species present in the field.

APPLICATION METHODS

SPRAY SOLUTION pH
The efficacy of TRIBUTE TOTAL may be affected by the pH of the spray solution. A pH near 6 is ideal. If pH is greater than 6, add a spray buffer.

SPRAY VOLUME
For broadcast applications, use a minimum of 10 gallons of water per acre. For weed control in dense weed populations, control of weeds under adverse growing conditions, or control of mature weeds,
higher spray volumes up to 60 gallons per acre should be used.

TRIBUTE TOTAL requires a spray adjuvant. For maximum weed control, use the spray adjuvant(s) as specified in the ‘WEEDS CONTROLLED’ section of this label.

SPOT TREATMENTS

Spot Treatments are for controlling individual weeds and/or small areas of weeds. To make a Spot Treatment, mix 0.023 oz.– 0.073 oz of TRIBUTE TOTAL per gallon of water and add appropriate spray adjuvant(s). Spray weeds until wet but avoid spray solution runoff and over-application. Spot treatments are likely to cause yellowing and growth regulatory effects to the turfgrass. For spot treatments, treat no more than 10,000 sq. ft. per acre.

SPRAY ADJUVANTS

TRIBUTE TOTAL requires a spray adjuvant. For maximum weed control, use the spray adjuvant(s) as specified in the ‘WEEDS CONTROLLED’ section of this label. These additives may also cause phytotoxicity to desirable turfgrasses under some situations. Test their use in a limited area that can tolerate damage and visually monitor for turf tolerance over several weeks prior to widespread use.

MIXING INSTRUCTIONS

TRIBUTE TOTAL must be applied with clean and properly calibrated equipment. Prior to adding TRIBUTE TOTAL, ensure that the spray tank, filters, and nozzles have been thoroughly cleaned.

• 1. Fill spray tank with ¼ to ½ the required volume of water.
• 2. Begin agitation prior to the addition of TRIBUTE TOTAL and continue throughout this entire mixing process (Steps 2. – 6.)
• 3. Add TRIBUTE TOTAL. Once it is fully dispersed, resume adding water to the desired volume.
• 4. If TRIBUTE TOTAL is to be applied in a tank mixture with other pesticides, the general order of addition for pesticides, by product form is, from first-in-spray-tank to last-in-spray-tank: WP or WG (this product) > DF > F > EC > SP or SC.
• 5. Finally, add the spray adjuvant and liquid fertilizer, if desired. Finish filling the spray tank with water to the desired volume.
• 6. Continue agitation during application to ensure a uniform spray mixture.

If this product is to be tank-mixed with other products, compatibility should be tested prior to mixing and turf tolerance should be tested prior to use. To test for compatibility, use a small container and mix a small amount (1/2 to 1 quart) of spray, combining all ingredients in the same ratio as the anticipated use. If any indications of physical incompatibility develop (e.g., precipitation, settling, color change), do not use this mixture for spraying. Indications of incompatibility may occur within 5 to 15 minutes after mixing. To test for turf tolerance, apply the tank mix at the specified rate to a small area that can tolerate damage and monitor visually for turf damage over several weeks. If damage is unacceptable, do not apply TRIBUTE TOTAL. Read and follow the precautionary statements, directions for use, and restrictions of each tank mix product. The most restrictive language applies.

APPLICATION
Uniform, thorough spray coverage is important to achieve consistent weed control. Select spray nozzles and pressure that deliver MEDIUM spray droplets as indicated in nozzle manufacturers’ catalogs and in accordance with ASABE Standard S-572.1. Nozzles that deliver COARSE spray droplets may be used to reduce spray drift provided spray volume per acre (GPA, Gallons Per Acre) is increased to maintain coverage of weeds.
 

WEEDS CONTROLLED
Crabgrass (Large crabgrass, Smooth crabgrass)*
Dallisgrass  
Doveweed
Goosegrass
Sedges & Kyllingas
Ryegrass, Poa annua
Tropical Signalgrass
Virginia Buttonweed
Bentgrass, Creeping
Bluegrass, Annual
Bluegrass, Roughstalk
Ryegrass - Transition
Barley, Little
Carpetweed (Indian chickweed)
Chickweed, Common
Chickweed, Mouseear
Clover, Hop
Clover, Rabbitfoot
Clover, White
Common vetch
Cudweed
Cutleaf evening primrose
Dandelion, Carolina false
Fescue, Tall
Florida pusley
Hairy bittercress
Henbit
Knawel
London rocket
Plantain, Buckhorn
Plantain, Paleseed
Ryegrass - Volunteer or 'Clumpy'
Shepherdspurse
Speedwell, Corn
Spur weed (Lawn burrweed) 
Texas toadflax
Annual blue-eyed grass
American burnweed (Fireweed)
Bahiagrass (suppression)
Buttonweed, Virginia
Carolina Geranium
Cocklebur, Common
Crabgrass, Large (Hairy crabgrass)
Crabgrass, Smooth
Dallisgrass
Dollarweed (Pennywort)
Doveweed
Facelis (Annual Trampweed)
Fleabane, Philadelphia
Goosegrass
Knotweed, Prostrate
Mallow, Venice
Nutsedge, Purple
Nutsedge, Yellow
Nutsedge, Yellow
Paspalum, Bull, Thin paspalum
Passionflower, Maypop
Pigweed, Redroot
Pokeweed, Common
Radish, Wild
Ragweed, Common
Ragweed, Giant
Rescuegrass, Rescue brome
Sedge - Annual, Cylindric, Globe, Surinam, Texas
Signalgrass, Tropical, Smallflowered alexandergrass
Smartweed, Pennsylvania
Spurge, Garden
Spurge, Spotted
Sunflower, Common
Velvetleaf
Woodsorrel, Yellow