Terbutrex

Manufacturer
ADAMA
Category
Herbicides
Registered until
2024-06-30
Registration number
60758
Active materials
Links

Controls certain early competing broadleaf weeds in wheat, barley, triticale, pastures and some varieties of oats and field peas as specified in the Directions for Use table.

DIRECTIONS FOR USE
RESTRAINTS:
DO NOT apply this product when temperatures are greater than 180C for the day prior to, the day of and for 4 days following application.
DO NOT spray under dry frosty conditions or if very dry conditions prevail.
DO NOT spray if weeds or crop/pastures are affected by insects, disease, dust or adverse weather conditions.
DO NOT add wetting agents or crop oils.
DO NOT use main or nozzle filters finer than 50 mesh for tank mixes.
DO NOT tank mix with selective grass herbicides.
DO NOT apply tank mixture of TERBUTREX plus Lonestar 750WG if another Group B herbicide (ASL inhibitor) has been used during the current season.
IF RAIN FALLS within 6 hours of application, the effect could be diminished.

BARLEY. some varieties of OATS, TRITICALE, WHEAT
(from 3 leaf to early tillering stage)
Weeds controlled: Amsinckia (Yellow Burrweed), Capeweed, Corn Gromwell (Sheep Weed or White Iron Weed), Deadnettle, Fumitory (Common, White and Dense Flowered), Paterson’s Curse, Toad Rush – 2 to 6 leaves
State: NSW, Vic only
Rate / ha: 550 to 850 mL
Critical comments: Use the highest rate when Deadnettle or Toad Rush is the major problem. Apply by boom spray or aircraft.

Weeds controlled: The above weeds in addition to Charlock, Doublegee (Three-cornered Jack), Hedge Mustard, Hexham Scent, Indian Hedge Mustard, Turnip Weed, Wild Turnip – 2 to 6 leaves
State: NSW, Vic only
Rate / ha: 550 to 850 mL + 300 mL of a 500 g/L 2,4-D (as amine) or 300 mL of a 500 g/L MCPA as a tank mix
Critical comments: DO NOT add MCPA or 2,4-D if undersown Medics are present.Apply by boom spray or aircraft. Use the highest rate when Deadnettle, Doublegee (Three-cornered Jack) or Toad Rush is the major problem.

Weeds controlled: Plagiobothrys canescens – 2 to 6 leaves
State: NSW, Vic only
Rate / ha: 850 mL
Critical comments: DO NOT add MCPA or 2,4-D if undersown Medics are present.Apply by boom spray or aircraft. Use the highest rate when Deadnettle, Doublegee (Three-cornered Jack) or Toad Rush is the major problem.

Weeds controlled: Turnip Weed
State: NSW only
Rate / ha: 300 mL + 6.5 g Lonestar 750WG
Critical comments: Spray when weeds are in the 2 to 6 leaf stage (up to 6 node/leaflet for field peas, 10 leaflet for Vetch), except 2 to 4 leaf for Doublegee. Use rates towards the lower end of the range (where applicable) when weeds are small and soil conditions are very moist.
Spray only when weeds are actively growing.
Spray only after good rain and when top soil is moist. Best results are obtained when good soil moisture has been present since planting.

Weeds controlled: Hedge Mustard, Indian Hedge Mustard, London Rocket, Wild Turnip
Rate / ha: 300 mL + 6.5 g Lonestar 750WG to 440 mL + 10 g Lonestar 750WG

Weeds controlled: Black Bindweed (Climbing Buckwheat), Faba Bean (volunteer), Field Pea (volunteer), Medic, Shepherds Purse
Rate / ha: 440 mL + 10 g Lonestar 750WG

Weeds controlled: Deadnettle, Mexican Poppy, Wild Radish
Rate / ha: 440 mL + 10 g Lonestar 750WG to 600 mL + 13 g Lonestar 750WG

Weeds controlled: Coreopsis, Sunflower (volunteer), Vetch
Rate / ha: 600 mL + 13 g Lonestar 750WG

State: NSW only
Critical comments: Spray when weeds are in the 2 to 6 leaf stage (up to 6 node/leaflet for field peas, 10 leaflet for Vetch), except 2 to 4 leaf for Doublegee.
Use rates towards the lower end of the range (where applicable) when weeds are small and soil conditions are very moist.
Spray only when weeds are actively growing. Spray only after good rain and when top soil is moist.
Best results are obtained when good soil moisture has been present since planting.

Weeds controlled: Paterson’s Curse, Turnip Weed
Rate / ha: 300 mL + 6.5 g Lonestar 750WG

Weeds controlled: Hedge Mustard, Indian Hedge Mustard, Wild Turnip
Rate / ha: 300 mL + 6.5 g Lonestar 750WG to 440 mL + 10 g Lonestar 750WG

Weeds controlled: Crassula, Faba Bean (volunteer), Hyssop Loosestrife, Medic, Prickly Lettuce (Whipthistle)
Rate / ha: 440 mL + 10 g Lonestar 750WG

Weeds controlled: Deadnettle, Field Pea (volunteer), Wild Radish
Rate / ha: 440 mL + 10 g Lonestar 750WG to 600 mL + 13 g Lonestar 750WG

Weeds controlled: Lupins (volunteer), Vetch, Wireweed (less than 3 leaves) suppression
Rate / ha: 600 mL + 13 g Lonestar 750WG

State: Vic only
Critical comments: Spray when weeds are in the 2 to 6 leaf stage (up to 6 node/leaflet for field peas, 10 leaflet for Vetch), except 2 to 4 leaf for Doublegee.
Use rates towards the lower end of the range (where applicable) when weeds are small and soil conditions are very moist.
Spray only when weeds are actively growing. Spray only after good rain and when top soil is moist.
Best results are obtained when good soil moisture has been present since planting.

Weeds controlled: Turnip Weed
Rate / ha: 300 mL + 6.5 g Lonestar 750WG

Weeds controlled: Denseflower Fumitory, Indian Hedge Mustard, Smallflower Fumitory, Wild Turnip
Rate / ha: 300 mL + 6.5 g Lonestar 750WG to 440 mL + 10 g Lonestar 750WG

Weeds controlled: Black Bindweed (Climbing Buckwheat), London Rocket
Rate / ha: 440 mL + 10 g Lonestar 750WG

Weeds controlled: Wild Radish
Rate / ha: 440 mL + 10 g Lonestar 750WG to 600 mL + 13 g Lonestar 750WG

Weeds controlled: Coreopsis, Corn Gromwell (Sheepweed or White Ironweed)
Rate / ha: 600 mL + 13 g Lonestar 750WG

State: Qld only
Critical comments: Spray when weeds are in the 2 to 6 leaf stage, except 2 to 4 leaf for Doublegee.
Use rates towards the lower end of the range (where applicable) when weeds are small and soil conditions are very moist.
Spray only when weeds are actively growing. Best results are obtained when good soil moisture has been present since planting.

Weeds controlled: Amsinckia (Yellow Burrweed), Capeweed, Corn Gromwell (Sheep Weed or White Iron Weed), Deadnettle, Doublegee (Three-cornered Jack), Fumitory (Common, White and Dense Flowered), Rough Poppy, Salvation Jane, Toad Rush – 2 to 6 true leaves
Rate / ha: 550 to 850 mL

Weeds controlled: The above weeds in addition to Charlock, Hedge Mustard, Hexham Scent, Indian Hedge Mustard, Mallee Catch-Fly, Turnip Weed, Wards Weed, Wild Turnip – 2 to 6 true leaves
Rate / ha: 550 to 850 mL + 300 mL of a 500 g/L 2,4-D (as amine) or 300 mL of a 500 g/L MCPA as a tank mix

State: SA only
Critical comments: DO NOT add MCPA or 2,4-D if undersown Medics are present.
Apply by boom spray or aircraft. Use the highest rate when Deadnettle, Doublegee (Three-cornered Jack) or Toad Rush is the major problem.
DO NOT apply to disease infected wheat as yellowing may occur.

Weeds controlled: Faba Beans (volunteer), Long Fruited Turnip, Long Headed Poppy, Paterson’s Curse, Turnip Weed
Rate / ha: 300 mL + 6.5 g Lonestar 750WG

Weeds controlled: Hedge Mustard, Indian Hedge Mustard, Wild Turnip
Rate / ha: 300 mL + 6.5 g Lonestar 750WG to 440 mL + 10 g Lonestar 750WG

Weeds controlled: Ball Mustard, Crassula, Medic, Prickly Lettuce (Whipthistle)
Rate / ha: 440 mL + 10 g Lonestar 750WG

Weeds controlled: Field Peas (volunteer), Wild Radish
Rate / ha: 440 mL + 10 g Lonestar 750WG to 600 mL + 13 g Lonestar 750WG

Weeds controlled: Doublegee (Spiny Emex, Three-cornered Jack), Lupins (volunteer), Vetch, Wireweed (less than 3 leaves) suppression
Rate / ha: 600 mL + 13 g Lonestar 750WG

State: SA only
Critical comments: Spray when weeds are in the 2 to 6 leaf stage (up to 6 node/leaflet for field peas, 10 leaflet for Vetch), except 2 to 4 leaf for Doublegee.
Use rates towards the lower end of the range (where applicable) when weeds are small and soil conditions are very moist.
Spray only when weeds are actively growing.
Spray only after good rain and when top soil is moist.
Best results are obtained when good soil moisture has been present since planting.

Weeds controlled: Capeweed, Corn Gromwell, Fumitory, Yellow Burrweed – 2 to 6 true leaves Doublegee (Three-cornered Jack), Toad Rush – 1 to 3 leaves
Rate / ha: 850 mL
State: WA only
Critical comments: Spray when weeds are in the 2 to 6 leaf stage (up to 6 node/leaflet for field peas, 10 leaflet for Vetch), except 2 to 4 leaf for Doublegee. Use rates towards the lower end of the range (where applicable) when weeds are small and soil conditions are very moist.
Spray only when weeds are actively growing.
Spray only after good rain and when top soil is moist.
Best results are obtained when good soil moisture has been present since planting.

Weeds controlled: The above weeds in addition to Indian Hedge Mustard, London Rocket, Lupin, Wild Radish and Wild Turnip – 2 to 6 true leaves
Rate / ha: 550 to 850 mL + 600 mL of a 500 g/L MCPA as a tank mix
State: WA only
Critical comments: Use the highest rate when Fumitory is the major problem weed in addition to Wild Turnip, Indian Hedge Mustard, London Rocket, Lupin and Wild Radish.

Weeds controlled: Turnip Weed
Rate / ha: 300 mL + 6.5 g Lonestar 750WG

Weeds controlled: Denseflower Fumitory, Hedge Mustard, Smallflower Fumitory
Rate / ha: 300 mL + 6.5 g Lonestar 750WG to 440 mL + 10 g Lonestar 750WG

Weeds controlled: Ball Mustard, Field Pea (volunteer)
Rate / ha: 440 mL + 10 g Lonestar 750WG

Weeds controlled: Deadnettle
Rate / ha: 440 mL + 10 g Lonestar 750WG to 600 mL + 13 g Lonestar 750WG

State: WA only
Critical comments: Spray when weeds are in the 2 to 6 leaf stage (up to 6 node/leaflet for field peas, 10 leaflet for vetch), except 2 to 4 leaf for Doublegee.
Use rates towards the lower end of the range (where applicable) when weeds are small and soil conditions are very moist.
Spray only when weeds are actively growing. Spray only after a good rain and when top soil is moist.
Best results are obtained when good soil moisture has been present since planting.

Weeds controlled: Australian Crassula, Doublegee (Spiny Emex, Three-cornered Jack), Lupins (volunteer)
Rate / ha: 600 mL + 13 g Lonestar 750WG
State: WA only
Critical comments: Spray only after a good rain and when top soil is moist.
Best results are obtained when good soil moisture has been present since planting.

PASTURES
(Use on mixtures of either/or Sub Clover (min. of 3 to max. of 10 leaves), Balansa Clover (established plants), White Clover (min. of 5 to max of 10 leaves) with either/ or Ryegrass, Phalaris, Cocksfoot (min. 3 leaves))
Weeds controlled: Capeweed (seedling to 10 cm diameter), Paterson’s Curse (seedling to 10 cm diameter)
Rate / ha: 550 to 700 mL

Weeds controlled: Capeweed (seedlings to 20 cm diameter), Crassula (1 to 5 cm diameter), Erodium botrys (seedlings to 8 cm diameter), Paterson’s Curse (seedlings to 20 cm diameter), Toad Rush (1 to 5 leaves)
Rate / ha: 400 to 700 mL plus 300 to 500 mL of MCPA 500 amine as a tank mix

State: NSW, Vic, Tas only
Critical comments: Apply by boom spray or aircraft. Use the lowest rate early in the season or when weeds are small and young. Increase rate as weed size and age increases. Early germinating Paterson’s Curse with strong root systems may not be controlled. Some temporary damage may be seen on clover if adverse growing conditions occur at and after spraying. Where a selective grass herbicide or simazine is to be or has been used, Terbutrex should not be used in the same season. See Pasture Safety section General Instructions.

FIELD PEAS
Weeds controlled:
Amsinckia (Yellow Burrweed), Capeweed, Common Fumitory, Corn Gromwell (Sheep Weed or White Iron Weed), Deadnettle, Paterson’s Curse, Toad Rush
Rate / ha: 700 to 850 mL
State: Vic only
Critical comments: Apply as an early post-emergent application when the peas are 10 to 12 cm high and have developed 3 to 5 nodes. Weeds should be young and actively growing and in the 4 to 5 true leaf stage. Use rates towards the higher end of the scale when Deadnettle is the major problem and when weeds are in the 6 true leaf stage. Where a selective grass herbicide is to be used, apply Terbutrex before the application of the selective herbicide.

GREEN PEAS, VINING PEAS, PROCESSING PEAS
Weeds controlled:
Blackberry Nightshade, Capeweed, Chickweed, Common Fumitory, Corn Gromwell, Deadnettle, Fat Hen, Paterson’s Curse, Toad Rush, Yellow Burrweed
Rate / ha: 750 mL to 1 L
State: Tas only
Critical comments: Apply as an early post-emergent application when the peas are 10 to 12 cm high and have developed 3 to 6 nodes and the weeds are young and actively growing and in the 2 to 4 true leaf stage. Use rates towards the higher end of the scale when Deadnettle and Blackberry Nightshade are the major problems.

NOT TO BE USED FOR ANY PURPOSE, OR IN ANY MANNER, CONTRARY TO THIS LABEL UNLESS AUTHORISED UNDER APPROPRIATE LEGISLATION.

WITHHOLDING PERIODS:
Field Peas, Canning Peas: DO NOT APPLY WITHIN 4 WEEKS OF HARVEST.
Pea fodder and forage: DO NOT GRAZE OR CUT FOR STOCK FOOD FOR 7 DAYS AFTER APPLICATION.
Pastures: DO NOT GRAZE OR CUT FOR STOCK FOOD FOR 7 DAYS AFTER APPLICATION.
Cereals: Terbutrex alone and Terbutrex Herbicide plus MCPA or 2,4-D as a tank mix: DO NOT CUT OR GRAZE FOR STOCK FOOD FOR 7 DAYS AFTER APPLICATION.
Cereals: Terbutrex plus triasulfuron WG tank mix: DO NOT GRAZE OR CUT FOR STOCK FOOD FOR 14 DAYS AFTER APPLICATION.

GENERAL INSTRUCTIONS
Important
- Spray only after good rain and when topsoil is moist and when weeds are actively growing.
- Best results are obtained when good soil moisture has been present since planting.
- DO NOT apply during dry or waterlogged conditions.

RESISTANT WEEDS WARNING
TERBUTREX® Herbicide is a member of the triazine group of herbicides and has the photosystem II photosynthesis inhibitor mode of action. For weed resistance management TERBUTREX is a Group C herbicide. Some naturally occurring weed biotypes resistant to TERBUTREX and other Group C herbicides may exist through normal genetic variability in any weed population. The resistant individuals can eventually dominate the weed population if these herbicides are used repeatedly. These resistant weeds will not be controlled by this product or other Group C herbicides, thus resulting in a reduction in efficacy and possible yield loss.
Since the occurrence of resistant weeds is difficult to detect prior to use, Adama Australia Pty. Ltd. accepts no liability for any losses that may result from the failure of this product to control resistant weeds. Advice as to strategies and alternative treatments that can be used should be obtained from your local supplier, consultant, local Department of Agriculture, Primary Industries Department or a Adama representative.

CROP SAFETY
DO NOT apply this product to Avon, Saia, Barmah and Cassia varieties of oats. Before applying to other varieties of oats, growers should seek advice from Adama Australia Pty. Ltd, for crop safety information. Undersown Medics and American Lucerne varieties may be damaged if sprayed. With early and late sown crops damage may occur if spraying is undertaken when temperatures are greater than 180C. Avoid spraying crops prior to May and from mid-August onwards as daily temperatures and weed size may not be satisfactory. Early sown crops should not be sprayed before the onset of frost and cooler weather.

PASTURE SAFETY
DO NOT apply this product to pasture species other than those stated in the Directions for Use.
DO NOT apply to medics and lucerne as damage may occur.
DO NOT apply on pastures prior to May or after mid-August or when temperatures are greater than 180C for the day prior to, the day of and for 4 days following application as pasture damage may occur.
DO NOT apply prior to or following the use of a grass selective herbicide or simazine in the same season as damage to pasture may occur.
DO NOT use in situations where oversowing or pastures may occur.
Pastures which contain young species should be sprayed using the lower label rates. Increase product rate as pasture age and size increases.
Only apply this product when conditions at and following application are favourable to pasture growth.

MIXING
Shake well before use. Strain the product to remove any flakes or dry particles which may have formed in hot storage conditions. Half fill spray tank and then add concentrate. Mix well and complete filling of the tank. Keep the spray mix agitated during spraying. Agitate vigorously if allowed to stand. Seal part used container immediately. If tank mixing, add Terbutrex to the spray tank first, then other products. Maintain constant agitation and use immediately.

APPLICATION
Ground Application:
Boom spray with flat fan nozzles. Ensure good spray coverage is obtained. Aim to apply 50 to 100 L per hectare.
Aircraft Application:
Always spray in a cross wind of less than 5 knots, or use smoke generator to indicate air movements. Ensure good spray coverage is obtained. For maximum coverage use fine nozzles. Apply 20 to 30 L per hectare.

CROP ROTATION GUIDELINES
Terbutrex plus triasulfuron WG tank mixture
The following crops can be planted after:
In areas where pH is less than 7.5
– 9 months after an application: barley, cereal rye, chickpeas, faba beans, field peas, lupins, medics, oats, canola, safflower, subclover, triticale, wheat.
In areas where pH is greater than 7.5
– 9 months after an application: barley, cereal rye, oats, triticale, wheat.
– 14 months after an application: cotton, maize, sorghum, soybeans, sunflowers. Where residual herbicides are applied following an application of Terbutrex plus triasulfuron WG, the crop rotational guidelines for these products must be followed.
– 22 months after an application: chickpeas, faba beans, field peas, lupins, medics, canola, safflower, subclover. For all other crops advice should be sought from Adama Australia Pty. Ltd.

COMPATIBILITY
This product is compatible with 2,4-D Amine, MCPA 500 Amine (not LVE), Lonestar 750WG/Logran* 750WG, Cutlass 500, Cutlass M, Cadence*, Lynx WG, and Suprathion.

PRECAUTION
Re-entry period: DO NOT enter treated area until spray has dried.

Registered for culturesRate
Spring barley300 - 850 ml
Winter barley300 - 850 ml
Spring oats300 - 850 ml
Winter oats300 - 850 ml
Winter wheat300 - 850 ml
Spring wheat300 - 850 ml
Winter triticale300 - 850 ml
Spring triticale300 - 850 ml
Pasture400 - 700 ml
Peas700 - 1000 ml