Rexade^®
Arylex^®active

Name: Rexade® Arylex® active
Brand: Corteva Agriscience

Herbicide

Group

Rexade Arylex active herbicide is for early post emergent grass and broadleaf weed control in wheat and triticale (excluding durum varieties).

Rexade (Groups 2 and 4) controls Group 1 herbicide resistant Wild Oats.

Rexade has label claims for 24 key broadleaf weeds commonly encountered in cereal production, one low application rate and two powerful modes of action.

Rexade^®
Arylex^®active Label

Rexade^®
Arylex^®active SDS

Jump to: Tech Specs Target Weeds Crops Features Application & Stewardship Additional Resources

Technical Specifications

Active Ingredient

50 g/kg Arylex active (Group 4)
150 g/kg pyroxsulam (Group 2)
Mode of Action

Plant cell growth disruption (arylpicolinate) and ALS inhibitor
Formulations

WDG GoDRI™ RDT™ (Rapid Dispersion Technology)
Packaging

1kg, 1.6kg, 2kg, and 5kg

Target Weeds

Please refer to the Rexade Arylex active label for weed growth stages, adjuvants, tank mixes, rates and critical comments.

Effective control of the following weeds:

* indicates suppression only

Grass Weeds

Annual ryegrass (Lolium rigidum) *

Barley grass (Hordeum leporinum) *

Brome grass (Bromus diandrus),

Phalaris spp.,

Silver grass (Vulpia spp.) *

Wild oats (Avena spp.)

Broadleaf Weeds

Bedstraw (Galium tricornutum)

Bifora (Bifora testiculata) *

Canola (Brassica napus) -excluding Clearfield varieties

Capeweed (Arctotheca calendula)

Broadleaf Weeds cont....

Chickpea (Cicer arietinum)

Climbing buckwheat / Black bindweed (Fallopia convolvulus)

Deadnettle (Lamium amplexicaule)

Doublegee / Spiny emex (Emex australis)

Faba bean (Vicia faba)

Field pea (Pisum sativum)

Fleabane (Conyza bonariensis) *

Fumitory (Fumaria spp.)

Indian hedge mustard (Sisymbrium orientale)

Lentil (Lens esculentum)

Broadleaf Weeds cont....

Lupins (Lupinus albus)*

Medic spp.

Prickly lettuce (Lactuca serriola)

Small flowered mallow (Malva parviflora) *

Sowthistle (Sonchus oleraceus)

Subclover (Trifolium subterraneum)

Turnip weed (Rapistrum rugosum)

Volunteer Vetch (Vicia sativa) *

Wild radish (Raphanus raphanistrum)

Wireweed (Polygonum aviculare)

Crops

Only from 3 leaf up to 1st node of the crop.

See full Rexade Arylex active label for crop growth stage.

Wheat (excluding durum varieties)

Triticale

Features

Group 1 resistance commonly exists across wide areas of Australia in the grass weed species including more than 5,000 populations of wild oats. (CropLife- Specific Guidelines for Group 1 herbicides). There are limited post emergent herbicide groups for the control of wild oats and brome grass in wheat and even less in barley.

Rexade Arylex active (Groups 2 and 4) takes the pressure off the Group 1 herbicides by controlling grasses in the wheat phase that are still susceptible to Group 2 chemistries. Wild oats, phalaris, and brome grass are well controlled by Rexade along with many of the common broadleaf weeds that can also infest wheat crops.

Weeds	Weed Stage	Rate/ha	Critical Comments
Wild oats (Avena spp.)	1-3 leaf (pre-tillering)	100 g	Always use BS1000® or Chemwet® 1000 at 250 mL/100 L. Weed suppression: Weeds may only be suppressed where densities of >150 plants/m2 are treated and may survive treatment, but will usually show reduced growth and seed set. Always use together with other methods of control to stop weed seed set.

Rexade Arylex active provides extensive grass and broadleaf weed control, offering farmers a one pass weed control solution.
Rexade controls key grass species, such as brome grass (Bromus diandrus), phalaris (Phalaris spp.) and wild oats (Avena spp.); as well as providing suppression of annual ryegrass (Lolium rigidum), barley grass (Hordeum leporinum) and silver grass (Vulpia spp.).
Rexade has label claims for 24 key broadleaf weeds commonly encountered in cereal production.
One pass weed control enables farmers to apply herbicides at the right time, ensuring the best possible result. It saves time and money; doing it once, doing it right.

Rexade works at a low dose rate and rapidly degrades in soil and plant residues, making it safe to sow a range of common rotational crops. Minimum re-cropping intervals are dependent primarily on moisture, and do not restrict winter cropping options. For detailed re-cropping intervals and minimum rainfall – see “Re-cropping Intervals” in the Stewardship & Application tab.

Rexade has one low application rate of 100 g/ha.
It is a water dispersible granule (WDG) formulation, making it convenient to store and handle.

GoDri RDT is a dry formulation technology designed to improve farmers’ application productivity by providing excellent mixing and handling performance.
GoDRI RDT provides several new benefits, including:
• Rapid dispersion, even in cold water
• Minimal foaming
• No sedimentation, no nozzle plugging
• High active ingredient loading, so low use rates
In addition, all of the co-formulants, or inert products, used in this technology have low toxicity and are environmentally friendly.
This technology has been tested under a wide range of water conditions to ensure it has robust performance no matter what the water source presents. This included temperatures as low as 2⁰C, water quality from 20 to 1026 ppm, and a pH range of 3 to 9, to represent a broad range of potential water sources.

GoDRI® RDT™ (rapid dispersion technology) makes Rexade Arylex active one of the easiest herbicides on the market to use.

Application

The application rate of Rexade Arylex active is 100 g/ha.

Adjuvants: Always use with BS1000, Chemwet 1000 or Spreadwet 1000 at 250 mL/100 L spray volume.

Boom Spraying: apply Rexade® in sufficient water to obtain complete and even coverage. It should be applied by an accurately calibrated ground rig using a water volume of 80 -100 L/ha. Sprayers should apply a coarse quality spray in accordance with ASAE S572 Standard.

Aerial Application: Rexade cannot be applied by air.

Rainfast: Rexade is rainfast in 6 hours.
Observe the rainfast period for the tank mix partner, whichever is the longer.

Best results are usually achieved when herbicide application is made under conditions which favour rapid plant growth. Weed control may be reduced when plants are stressed by a range of factors including, but not limited to: drought, water logging, prolonged or severe frosts, sustained high or low temperatures, poor nutrition (including deficiency and trace element toxicity), root diseases or previous herbicide application.
Final weed control may be reduced when the soil remains moist for an extended period following application, especially when row spacings are wide and/or crops are uncompetitive.

Best results with Rexade are achieved when the following conditions are present:
• Healthy competitive crops;
• Pre-tillered weeds or small rosette broadleaf weeds, in low densities;
• Actively growing weeds, not subject to stress (eg. moisture, waterlogging, frost (before and after application), herbicide or insect damage);
• Use of a high quality non-ionic surfactant (NIS, such as BS1000, Chemwet 1000 or Spreadwet 1000);
• Where mixed weed populations exist and/or in less than ideal conditions, addition of LVE 600 MCPA will often improve results.

Measure the required quantity of granules by weighing on scales or using measuring device.
Rexade® granules are highly soluble in water and will dissolve rapidly once added to fast moving water. Maintain agitation at all times, including during mixing as well as spraying.

Spray rigs with pre-mix hoppers
For spray rigs that have a drop-down chemical induction hopper, three-quarter fill this hopper with water and have the rinsing sprinkler operating. Add Rexade® and when dissolved, transfer this batch into the quarter filled main tank. Continue to rinse the hopper until the entire product has washed through.

Spray rigs with limited bypass agitation
For spray rigs that have limited bypass agitation, pre-dissolve Rexade® in a bucket before adding to the main tank. Add Rexade® while stirring until the granules have dissolved.

Tank-mixes: The following order should be followed (wait until each formulation is mixed
before adding the next one):
1. Quarter fill the spray tank while maintaining agitation.
2. Add Rexade® granules, using the mixing procedure above.
3. Add LVE 600 MCPA (if required).
4. Add wettable powders, water dispersible granules or suspension concentrates.
5. Add other emulsified concentrates.
6. Fill the spray tank to half full. Then add non-ionic surfactants.
Rexade® should be mixed and sprayed out within 8 hours.

Stewardship

When using Rexade in a tank mix with another product, observe whichever harvest or grazing/ stockfood withholding period that is the longer.

Harvest: Not required when used as directed.
Grazing/Stockfood: Do not graze or cut treated crops for stock feed for 4 weeks after application.
Fodder intended for export: Some countries have limits on the level of residue acceptable in animal feeds. Please consult your exporter before using this product on crops destined to be used for export fodder.
Livestock destined for export markets: When Rexade is used as directed and the above withholding period is observed, livestock commodities are considered acceptable for export. However, export requirements are subject to change. Consult your exporter for updated information about specific market requirements.

Rexade works at a low dose rate and rapidly degrades in soil and plant residues, making it safe to sow a range of common rotational crops.
Planting crops ‘dry’ without the minimum rainfall (as stated in the table below) increases the risk of injury to susceptible crops. Susceptible crops include, but are not limited to, those listed in the table below.
Rexade is primarily broken down in soil by microbial activity. Breakdown occurs relatively quickly with extended periods of soil moisture when soils are warm.
Breakdown is likely to be slow in dry seasons, or in cold, waterlogged soils. Rainfall requirements are met only when soil moisture is maintained in conjunction with warm soil temperature for an extended period. Light, intermittent rainfall, or very heavy rainfall with significant runoff is not “effective” rainfall.

Area	Crop to be planted	Minimum rainfall requirement (mm)	Minimum time requirement (months)
SA, Sth NSW, Tas, Vic, and WA (winter dominant rainfall areas). All soils.	Peas, canola, oats, barley	75	8
	Lentils, sub clover, chickpeas, faba beans, medic, vetch, peas, lucerne	100	8
Nth NSW and Qld (summer dominant rainfall areas). Vertisol soils.	Peas, canola, oats, barley	100	7
	Chickpeas, clover, faba beans, lucerne, vetch	125	8
	Sorghum, maize, sunflower	100	5
	Mung beans	150	5
	Cotton, soybeans	150	8

APVMA compliance instructions for mandatory COARSE or larger droplet size categories:
Important information.
These instructions inform those using this chemical product how to lawfully comply with the requirement of a COARSE or larger spray droplet size category for spray application.

Spray droplet size categories are defined in the ASAE S572 Standard (newer name may also be shown as ASABE) or the BCPC guideline. Nozzle manufacturers may refer to one or both of these documents, to identify droplet size categories; however, for a nozzle to comply with this requirement, the manufacturer must refer to at least one.

Complying with the label requirement to use a specific droplet size category means using the correct nozzle that will deliver that droplet size category under the spray operation conditions being used. The APVMA has approved only the following specific methods for choosing the correct nozzle. Use one of the methods specified in these instructions to select a correct nozzle to deliver a COARSE or larger droplet size category.

Instructions for Ground Application - for COARSE droplet size or larger categories:
Mandatory Instructions for Ground Applications
USE ONLY nozzles that the nozzles’ manufacturer has rated to deliver a COARSE, a VERY
COARSE or an EXTREMELY COARSE droplet size category, as referenced in ASAE S572 or
BCPC. Choose a nozzle that is specified to provide the droplet size category required in the label SPRAY DRIFT RESTRAINTS.
DO NOT use a higher spray system pressure than the maximum the manufacturer specifies for the selected nozzle to deliver the droplet size category required in the label SPRAY DRIFT RESTRAINTS

After using Rexade Arylex active, empty the tank completely and drain the whole system. Thoroughly wash inside the tank using a pressure hose, drain the tank and clean tank, pump, line and nozzle filters.

Partial Cleaning - Rinse only - before using sprayer to treat triticale or wheat:
After cleaning the tank as above, quarter fill the tank with clean water and circulate through the pump, line, hoses and nozzles. Drain and repeat procedure twice.

Complete Cleaning - Decontamination - before using sprayer to treat crops that are susceptible to Rexade®:
After cleaning the tank as above, quarter fill the tank with clean water and add a liquid alkali detergent at 500 mL/100 L water and circulate throughout the system for at least 15 minutes. Drain the whole system. Then remove filters and nozzles and clean separately. Finally rinse inside the tank thoroughly using a pressure hose and flush system with clean water and allow to drain. Note: chlorine-based cleaners are NOT recommended. These tank cleaning recommendations are for Rexade® only. Please consult tank-mix partner labels to determine requirement for decontamination for other products.

Rinse water should be discharged onto a designated disposal area or, if this is unavailable,
onto unused land away from desirable plants and their roots and watercourses.

Additional Resources

Rexade - Technical Manual

Discover Rexade Arylex active and learn about its one pass weed control and flexibility

View now

Rexade - Weed Density

See the effect that weed size and population density can have on the control of Brome grass.

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Arylex active Comparison Table

Compare all herbicide products containing Arylex active including use rates, application windows, efficacy and more.

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Arylex active Compatibility Chart

List of compatible tank mix partners for our herbicides containing Arylex active.

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Arylex active products in Fallow situations

Each Arylex active product has its own fit depending on weed spectrum, desired re-cropping interval, mixing partners and application technique.

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Arylex active products in Fallow situations

Rotational Crop Plantback Intervals

Northern Australia – for the black soils of the Northern NSW and Qld cropping zones.

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Winter Cereals Integrated Solutions

Winter Cereals Product Range. IPM compatible, sustainable products for wheat, oats, triticale and barley.

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Country Selector

Rexade® Arylex® active

Technical Specifications

Target Weeds

Effective control of the following weeds:

Crops

Wheat (excluding durum varieties)

Triticale

Features