TerbaQuest 875WG Selective Herbicide

TerbaQuest 875WG Selective Herbicide is for the control of weeds in barley, oats, wheat, chickpeas, faba beans, fallows, field peas, lentils, lupins, sorghum and triazine tolerant canola.  TerbaQuest effectively controls various annual grasses and broadleaf weeds, making it a versatile tool for weed management in various crops.

TerbaQuest can be applied pre-emergence, early post-emergence, or as a split application, offering flexibility to growers depending on weed pressure and crop growth stage.

Active Ingredient: Terbuthylazine @ 875g/kg

Similar or comparable to Terbyne Xtreme 875 Wg Herbicide (Sipcam) & Terbazine 875WG Herbicide (Nufarm)

Click For Technical Info & Tips For Use
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This item is large and requires a courier! Ensure a courier can reach your address.
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Ordering multiple large items? They will be shipped on a skid or pallet to ensure that your items arrive safely and securely. The delivery truck will need to be unloaded with a forklift. If you do not have a forklift, please provide an address where a forklift is present.

TerbaQuest 875WG Selective Herbicide TERBAQUEST Conquest Crop Protection

Description

TerbaQuest 875WG Selective Herbicide

Active Ingredient: Terbuthylazine @ 875g/kg

Similar or comparable to Terbyne Xtreme 875 Wg Herbicide (Sipcam) & Terbazine 875WG Herbicide (Nufarm)

TerbaQuest 875WG Selective Herbicide is for the control of weeds in barley, oats, wheat, chickpeas, faba beans, fallows, field peas, lentils, lupins, sorghum and triazine tolerant canola.  TerbaQuest effectively controls various annual grasses and broadleaf weeds, making it a versatile tool for weed management in various crops. TerbaQuest 875 can be applied pre-emergence, early post-emergence, or as a split application, offering flexibility to growers depending on weed pressure and crop growth stage.

What weeds does TerbaQuest 875WG Selective Herbicide target:

African Turnip Weed Dead Nettle Noogoora Burr Thornapples (Datura Spp)
Annual Ground Cherry Doublegee Ox Tongue Toadrush
Annual Ryegrass Dwarf Amaranth Phalaris Turnip Weed
Apple Of Peru Flax Leaf Fleabane Pigweed Wild Gooseberry
Bathurst Burr Giant (Black) Pigweed Pigweed (Red) Wild Oats
Boggabri Weed Hogweed (Polygonum Aviculare) Prickly Lettuce Wild Radish
Burr Medic Indian Hedge Mustard Shepherd’s Purse Wild Turnip
Caltrop Long Haired Poppy Silver Grass Wireweed
Corn Gromwell (White Iron Weed, Sheep Weed) Milk Thistle Sow Thistle
Cow Vine (Peach Vine) Mint Weed Spiny Emex

What weeds does TerbaQuest 875WG Selective Herbicide suppress:

Annual Ryegrass Pigweed
Bladder Ketmia Silver Grass
Boggabri Weed Spiny Emex
Doublegee Wild Oats
Dwarf Amaranth Wild Radish
Phalaris

Where can TerbaQuest 875WG Selective Herbicide be used:

  • Chickpeas, Faba beans, Field peas & Lupins (not irrigated) (Pre-Sowing, Post sowing & Pre Emergence).
  • Canola (TT or Triazine Tolerant varieties only) (Pre-Sowing, Post sowing & Pre Emergence)
  • Lentils (Pre-Sowing (IBS Only)
  • Sorghum (Pre-Sowing, Post-Sowing, Pre-Emergence and Post-Emergence)
  • Application to fallows before planting mung beans, soybeans, barley, oats and wheat as directed in the Fallows section of the label (NSW and QLD only) (Pre-Emergence)
  • Cereals (wheat, oats, barley) (not irrigated) (Pre-Sowing IBS Only)
  • Wheat and barley (not irrigated) (Pre-Sowing IBS Only)

TerbaQuest 875WG Selective Herbicide is a Group 6 (previously C) herbicide belonging to the triazines group, an inhibitor of photosynthesis at photosystem II.

TerbaQuest contains Terbuthylazine, a selective chlorotriazine herbicide. Compared with atrazine and simazine, it has a tert-butyl group in place of the isopropyl and ethyl groups, respectively.

Why choose TerbaQuest 875WG Selective Herbicide:

  • Broad Spectrum Control: It effectively controls a wide range of annual grasses and broadleaf weeds, making it a versatile tool for weed management in various crops.
  • Residual Activity: Terbuthylazine provides excellent residual control, preventing the emergence of weeds for an extended period after application. This reduces the need for multiple herbicide applications throughout the growing season.
  • Flexible Application Timing: It can be applied pre-emergence, early post-emergence, or as a split application, offering flexibility to growers depending on weed pressure and crop growth stage.
  • Crop Selectivity: Terbuthylazine is safe for use on many crops. It inhibits photosynthesis in target weeds while leaving the crop relatively unharmed.
  • Synergistic Effects: When mixed with other herbicides, terbuthylazine can enhance their efficacy, providing broader spectrum control and managing herbicide resistance.

TerbaQuest 875WG Selective Herbicide Pack Size: 15kg

Registrant: Conquest Crop Protection Pty Ltd (APVMA #: 88599)

Crop Protection Herbicide Range

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Features & Benefits

  • Contains the active ingredient Terbuthylazine.
  • Broad Spectrum Control of a wide range of annual grasses and broadleaf weeds.
  • It provides excellent residual control, preventing the emergence of weeds for an extended period after application. 
  • Flexible Application Timing.
  • Safe for use on many crops.
  • Synergistic Effects when mixed with various other herbicides.

Directions Of Use

Click here for TerbaQuest 875WG Selective Herbicide directions for use.

General Rates:


Crop: Chickpeas, Faba beans, Field peas, Lupins (not irrigated)

Weeds: Burr medic, Corn gromwell (White ironweed, Sheep weed), Dead nettle, Indian hedge mustard, Long haired poppy, Mint weed, Ox tongue, Prickly lettuce, Shepherd’s purse, Sow thistle, Toadrush, Turnip weed, Wild gooseberry, Wild turnip, Wireweed. Suppression of: Annual ryegrass, Doublegee/Spiny emex, Phalaris, Silver grass, Wild oats, Wild radish

Situation: Pre-Sowing (Rate: 0.86 – 1.20kg per Ha)

Situation: Post Sowing, Pre Emergence (PSPE). Apply to the soil within 2 days after sowing. (Rate: 0.60 – 0.86kg per Ha)


Crop: Canola (TT or Triazine Tolerant varieties only)

Weeds: Burr medic, Corn gromwell (White ironweed, Sheep weed), Dead nettle, Indian hedge mustard, Long haired poppy, Mint weed, Ox tongue, Prickly lettuce, Shepherd’s purse, Sow thistle, Toadrush, Turnip weed, Wild gooseberry, Wild turnip, Wireweed. Suppression of: Annual ryegrass, Doublegee/Spiny emex, Phalaris, Silver grass, Wild oats, Wild radish

Situation: Pre-Sowing & Post-Sowing, Pre-Emergence (PSPE). Apply to the soil within 2 days after sowing. (Rate: 0.86 to 1.20 kgper Ha)


Crop: Canola (TT or Triazine Tolerant varieties only)

Weeds: Wild radish, Dead nettle Suppression of Annual ryegrass, Doublegee/ Spiny emex, Wild oats, Phalaris 

Situation: Early post Emergence (Rate: 0.60 – 1.20kg per Ha)


Crop: Lentils

Weeds: Burr medic, Corn gromwell (White ironweed, Sheep weed), Dead nettle, Indian hedge mustard, Long haired poppy, Mint weed, Ox tongue, Prickly lettuce, Shepherd’s purse, Sow thistle, Toadrush, Turnip weed, Wild gooseberry, Wild turnip, Wireweed. Suppression of: Annual ryegrass, Doublegee/ Spiny emex, Phalaris, Silver grass, Wild oats, Wild radish

Situation: Pre-Sowing (IBS only) (Rate: 0.86 – 1.20kg per Ha)


Crop: Sorghum

Weeds: Bladder ketmia, dwarf amaranth, milk thistle (sow thistle) and pigweed

Situation: Pre-Sowing and Post-Sowing Pre-Emergence (Rate: 1.20kg per Ha)


Crop: Sorghum

Weeds: Boggabri weed, noogoora burr, sow thistle (milk thistle), turnip weed, wild gooseberry.

Situation: Post-emergence (Rate: 1.20kg per Ha)


Crop: Sorghum

Weeds: Boggabri weed, noogoora burr, sow thistle (milk thistle), turnip weed, wild gooseberry, Annual ground cherry, apple of Peru, Bathurst burr, Bladder ketmia, caltrop, cow vine (peach vine), dwarf amaranth, giant (black) pigweed, pigweed (red), thorn apples (Datura spp)

Situation: Post-Emergence (Rate: 0.95kg per Ha plus Acclaim (200g/L Fluroxypyr at 500-750mL per Ha)


Crop: Application to fallows before planting mung beans, soybeans, barley, oats and wheat as directed in the Fallows section of the label (NSW and QLD only)

Weeds: African turnip weed, Burr medic, Corn gromwell (White ironweed, Sheep weed), Dead nettle, Indian hedge mustard, Flax leaf fleabane, Long haired poppy, Mint weed, Ox tongue, Prickly lettuce, Shepherd’s purse, Sow thistle/ Milk thistle, Toadrush, Wild gooseberry, Wild radish, Wild turnip, Wireweed/ Hogweed (Polygonum aviculare). Suppression of: Annual ryegrass, Bladder ketmia, Boggabri weed, Doublegee / Spiny emex, Dwarf amaranth, Phalaris, Pigweed, Wild oats, Wild radish.

Situation: Post-Emergence (Rate: 0.86 – 1.2kg per Ha)


Crop: Cereals (wheat, oats, barley) (not irrigated)

Weeds: Burr medic, Corn gromwell (White ironweed, Sheep weed), Dead nettle, Indian hedge mustard, Long haired poppy, Mint weed, Ox tongue, Prickly lettuce, Shepherd’s purse, Sow thistle, Toadrush, Turnip weed, Wild gooseberry, Wild turnip, Wireweed. Suppression of: Annual ryegrass, Doublegee/ Spiny emex, Phalaris, Silver grass, Wild oats, Wild radish

Situation: Pre-Sowing (IBS Only) (Rate: 0.86 – 1.20kg per Ha)


Crop: Wheat and barley (not irrigated)

Weeds: All Cereals weed claims above plus control of annual ryegrass

Situation: Pre-Sowing (IBS Only) (Rate: 0.86 – 1.20 plus 2L/ha of a 480 g/L trifluralin product.)


Crop: Wheat and barley (not irrigated)

Weeds: All Cereals weed claims above plus control of wild oats

Situation: Pre-Sowing (IBS Only) (Rate: 0.86 – 1.20kg per Ha, plus 2L per Ha of a 500g/L triallate product.


Rates are a general guide only.  Before opening, carefully read TerbaQuest 875WG Selective Herbicide directions for use, precautionary and protection statements, storage and disposal, safety directions and first aid instructions.  The product is designed for the particular purpose indicated on the label. Failure to use the product strictly as directed may be illegal and dangerous and render the product ineffective.

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Disclaimer: This information and product advice is not intended to be advice or recommendations for any specific use or circumstance. You should seek specialist advice before using any product. Always follow the manufacturer’s guidelines. Specialist Sales liability is limited.

Host & Pest

Host Pest
Host & Pest
Canola - Tt Or Triazine Tolerant Varieties Only, Chickpea - Pre-Sowing, Faba Bean - Pre-Sowing, Field Pea - Pre-Sowing & Lupins Annual Ryegrass - Suppression, Black Bindweed, Burr Medic, Corn Gromwell, Ironweed Or Sheepweed, Deadnettle - Lamium Spp., Indian Hedge Mustard, Long Haired Poppy, Mintweed, Ox Tongue, Phalaris - Suppression, Prickly Lettuce, Shepherd’s Purse,, Silver Grass - Suppression - Vulpia Spp., Sow Thistle, Spiny Emex - Doublegee - Suppression, Toad Rush, Turnip Weed, Wild Gooseberry - Physalis Spp., Wild Oats - Suppression, Wild Radish - Suppression, Wireweed
Cereals Annual Ryegrass - Suppression, Black Bindweed, Burr Medic, Corn Gromwell, Ironweed Or Sheepweed, Deadnettle, Indian Hedge Mustard, Long Haired Poppy, Mintweed, Ox Tongue, Phalaris - Suppression, Prickly Lettuce, Shepherd’s Purse,, Silver Grass - Suppression - Vulpia Spp., Sow Thistle, Spiny Emex - Doublegee - Suppression, Toad Rush, Turnip Weed, Wild Gooseberry - Physalis Spp., Wild Oat - Suppression, Wild Radish - Suppression, Wild Turnip - Brassica Spp., Wireweed
Chickpea - Post Sowing Annual Ryegrass, Black Bindweed, Burr Medic, Corn Gromwell, Ironweed Or Sheepweed, Deadnettle - Lamium Spp., Indian Hedge Mustard, Long Haired Poppy, Mintweed, Ox Tongue, Phalaris - Suppression, Prickly Lettuce, Shepherd’s Purse,, Silver Grass - Suppression - Vulpia Spp., Sow Thistle, Spiny Emex, Toad Rush, Turnip Weed, Wild Gooseberry - Physalis Spp., Wild Oat - Suppression, Wild Radish - Suppression, Wireweed
Fallows Or Prior To Planting A Crop African Turnip Weed, Annual Ryegrass, Black Bindweed, Bladder Ketmia, Boggabri Weed, Burr Medic, Caltrop Or Yellow Vine, Corn Gromwell - Buglossoides Arvense, Deadnettle, Dwarf Amaranth Or Boggabri Weed, Flax Leaf Fleabane, Indian Hedge Mustard, Long Haired Poppy, Mintweed, Ox Tongue, Phalaris - Phalaris Spp., Pigweed Spp., Prickly Lettuce, Shepherd’s Purse,, Sow Or Milk Thistle, Spiny Emex, Toad Rush, Wild Gooseberry, Wild Oats Spp, Wild Radish, Wild Turnip - Brassica Spp., Wireweed, Hogweed - Suppression
Lentils - Refer To Label Annual Ryegrass, Black Bindweed, Burr Medic, Corn Gromwell, Ironweed Or Sheepweed, Deadnettle - Lamium Spp., Indian Hedge Mustard, Long Haired Poppy, Mintweed, Ox Tongue, Phalaris - Phalaris Spp., Prickly Lettuce, Shepherd’s Purse,, Silvergrass - Vulpia Spp., Sow Thistle, Spiny Emex, Toad Rush, Turnip Weed, Wild Gooseberry - Physalis Spp., Wild Oats Spp, Wild Radish, Wild Turnip - Brassica Spp., Wireweed
Sorghum - Post-Emergence Annual Ground Cherry, Apple Of Peru, Bathurst Burr, Bladder Ketmia, Boggabri Weed, Caltrop Or Yellow Vine, Dwarf Amaranth - Suppression, Giant Or Black Pigweed, Noogoora Burr, Peach Vine, Red Pigweed, Sow Thistle, Thornapple, Turnip Weed, Wild Gooseberry
Sorghum - Pre And Post-Sowing Bladder Ketmia, Caltrop Or Yellow Vine, Dwarf Amaranth Or Boggabri Weed, Sow Or Milk Thistle
Wheat And Barley - Undersown Annual Ryegrass - Suppression, Black Bindweed, Burr Medic, Corn Gromwell, Ironweed Or Sheepweed, Deadnettle, Indian Hedge Mustard, Long Haired Poppy, Mintweed, Ox Tongue, Phalaris - Suppression, Prickly Lettuce, Shepherd’s Purse,, Silver Grass - Suppression - Vulpia Spp., Sow Thistle, Spiny Emex - Doublegee - Suppression, Toad Rush, Turnip Weed, Wild Gooseberry - Physalis Spp., Wild Oat - Suppression, Wild Oats Spp, Wild Radish - Suppression, Wild Turnip - Brassica Spp., Wireweed

Tips For Use

General Instructions:

  • Terbaquest 875 can be used to selectively control weeds in the crops listed in the directions for use table and on fallows prior to establishing crops as directed in the Fallows section below.
  • When applied pre-emergence, the product is mainly absorbed via the roots. Weeds buried by cultivation may not be effectively controlled.
  • Heavy rainfall on light soils may cause movement of the herbicide out of the weed seed zone, resulting in reduced weed control.
  • Do not apply to recently burnt stubble/trash. After burning, rainfall or cultivation is required to allow Terbaquest 875 to reach the soil and not be irreversibly bound by ash.
  • Terbaquest 875 is primarily incorporated by rainfall. Sufficient rainfall (20 to 30 mm either as rainfall or irrigation) to wet the soil through the weed root zone is necessary within 2 to 3 weeks of application to make the product effective.
  • Weeds may germinate and emerge before being controlled by Terbaquest 875. However, a delay in rainfall for an extended period may result in weeds germinating from depth and surviving.
  • Where the soil has a high potential for leaching, heavy rainfall between application and crop emergence may result in crop damage from the movement of herbicide into the crop seed zone.
  • In flood or furrow irrigation situations, complete and continued activation of the product may not occur due to a thin band of dry soil on the surface during or after irrigation.
  • Mechanical incorporation after application, using light harrows to incorporate the product into the soil not more than 4cm deep is required to ensure the irrigation water activates the product. Always apply the product to an even un-ridged seedbed.
  • Dense weed populations and multiple germinations (especially Wild radish) may require both a pre-emergent and post-emergent herbicide treatment (only one being Terbaquest 875) to give acceptable control.

Restraints:

  • Do not apply by air.
  • Do not apply to waterlogged soil.
  • Do not apply to fields where the slope exceeds 3%.
  • Do not apply if heavy rains or storms that are likely to cause surface runoff are forecast within two days of application.
  • Do not irrigate to the point of runoff for at least 2 days after application.
  • Do not use as a pre-emergence application in sorghum during the wet season in the Northern Irrigation areas of Western Australia.
  • Do not apply more than 1.2 kg/ha per crop.

Compatibility:

  • This product is compatible with Acclaim Herbicide, Starane Advanced Herbicide, Strada Herbicide, Dual Gold Herbicide, Glisarin Spray Adjuvant, Wetter 1000 non-ionic surfactant, Uptake Spraying Oil, trifluralin, 2,4-D amine, Tordon 75D, glyphosate, Roundup Ready Herbicide with Plantshield by Monsanto, Panida Grande, paraquat and paraquat/diquat mixtures.
  • Refer to the label of the knockdown herbicide for specific weeds by rate recommendations.

Mixing:

  • Do not mix or load within 20m of any well, dam, intermittent or perennial stream. 
  • Partially fill the spray tank with water and maintain agitation while adding the required quantity of Terbaquest 875.
  • Agitation should continue after filling and during spraying. 
  • If the spray is allowed to stand, agitate thoroughly before resuming spraying.

Application:

  • Do not apply under weather conditions or from spraying equipment, that may cause spray to drift onto nearby susceptible plants/crops, cropping lands or pastures.

Ground Application:

  • Do not apply when wind speed is less than 3 and greater than 20 km/h or during weather conditions when surface temperature inversions can develop. 
  • Apply by ground boom in a minimum of 50L/ha. 
  • Use only Coarse spray quality according to ASAE S572 definition for standard nozzles.

Precautions: Re-Entry Period

  • Do not allow entry into treated areas for 8 days. 
  • When prior entry is necessary, wear cotton overalls buttoned to the neck and wrist over normal clothing and chemical-resistant gloves.
  • Clothing must be laundered after each day’s use.

Protection Of Wildlife, Fish, Crustaceans And Environment:

  • Very toxic to aquatic life. 
  • Do not contaminate wetlands or watercourses with the product or used containers. 
  • After application of Terbaquest 875, do not irrigate the crop to the point of run-off unless it can be retained on farm.
  • TT canola: Do not use or apply this product post-emergence on raised beds or where furrows have been created in the soil for the purpose of holding or channelling water.
  • Do not use in channels or drains.

Protection Of Crops, Native And Other Non-Target Plants:

  • Do not apply, drain or flush equipment on or near desirable trees or other plants or on areas where their roots may extend or in locations where the chemical may be washed or moved into contact with their roots. 
  • Do not apply on sites where surface water from heavy rain can be expected to run off to areas containing, or to be planted with susceptible crops or plants. 
  • Do not plant crops other than those recommended on this label for at least 6 months following the most recent application of up to 1.2 Kg per hectare. 
  • Refer to the Crops information table for minimum rainfall or irrigation requirements.

Storage:

  • Store in the closed, original container in a dry, cool, well-ventilated area out of direct sunlight.

Safety Directions: 

  • It may irritate the eyes. 
  • Avoid contact with eyes. 
  • When opening the container, mixing and loading and preparing spray, wear cotton overalls buttoned to the neck and wrist and a washable hat, elbow length chemical-resistant gloves and a half face respirator with dust cartridge or canister. 
  • When preparing the product for use by boom spray equipment, wear cotton overalls, over normal clothing, buttoned to the neck and wrist and a washable hat and elbow length chemical-resistant gloves and a half face respirator with dust cartridge or canister. 
  • When using the prepared spray, wear cotton overalls buttoned to the neck and wrist (or equivalent clothing). 
  • If the product is in the eyes, wash it out immediately with water. 
  • Wash hands after use. 
  • After each day of use, wash gloves, contaminated clothing, and respirator and if rubber, wash with detergent and warm water.

First Aid:

  • If poisoning occurs, contact a doctor or the Poisons Information Centre. Phone Australia 131 126.
  • For further information, refer to the Safety Data Sheet (SDS). 

This information and product advice is not intended as advice or recommendations for any specific use or circumstance. You should seek specialist advice before using any product. Always follow the manufacturer’s guidelines. Specialist Sales liability is limited.​

Withholding Period

Withholding Period Details (WHP):

  • All Crops Harvest: Not required when used as directed.
  • Chickpeas, Faba beans, Field peas, Lentils, Lupins and Canola Grazing: Do not graze or cut for stock food for 6 weeks after application.
  • Sorghum Grazing: Do not graze or cut for stock food for 4 weeks after application.
  • Fallows Grazing: Do not graze or cut for stock food for 6 weeks after application.
  • Cereals (wheat, barley, oats) Grazing: Do not graze or cut for stock food for 8 weeks after application.

SDS & Technical

TerbaQuest 875WG Selective Herbicide Label APVMA Download Pdf
TerbaQuest 875WG Selective Herbicide SDS Download Pdf

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