IntervixPlant Protection Product ComparisonPlant Protection Product ComparisonReport inaccuraciesReport inaccuracies

For the early post-emergence control of certain annual grass and broadleaf weeds as part of the Clearfield Production System for Clearfield Plus wheat, Clearfield barley, and Clearfield canola, as specified in the DIRECTIONS FOR USE section of this label.

DIRECTIONS FOR USE
RESTRAINTS
Apply ONLY to certified Clearfield Plus wheat, Clearfield barley and Clearfield canola,varieties with the Clearfield technology, excluding Clearfield STL and Clearfield JNZ. DO NOT apply to conventional or other herbicide tolerant canola, wheat, and barley varieties.
DO NOT apply to crops that are stressed due to conditions such as waterlogging, too little moisture, frost, disease or nutritional disorders.
DO NOT apply by aircraft.
DO NOT apply if rain is expected within 2 hours of application. DO NOT apply more than once per season to any one crop.
DO NOT use in Clearfield Plus wheat crops in tank mix or sequentially with diuron, sulfonylureas, or sulfonamides.

SPRAY DRIFT RESTRAINTS:
DO NOT apply with spray droplets smaller than a MEDIUM spray droplet size category according to nozzle manufacturer specifications that refer to the ASAE S572 Standard or the BCPC Guideline.
DO NOT apply when wind speed is less than 3 or more than 20 kilometers per hour as measured at the application site. DO NOT apply during surface temperature inversion conditions at the application site.
Users of this product MUST make an accurate written record of the details of each spray application within 24 hours following application and KEEP this record for a minimum of 2 years. The spray application details that must be recorded are: 1 date with start and finish times of application; 2 location address and paddock/s sprayed; 3 full name of this product; 4 amount of product used per hectare and number of hectares applied to; 5 crop/situation and weed/pest; 6 wind speed and direction during application; 7 air temperature and relative humidity during application; 8 nozzle brand, type, spray angle, nozzle capacity and spray system pressure measured during application; 9 name and address of person applying this product. (Additional record details may be required by the state or territory where this product is used.)

MANDATORY NO-SPRAY ZONES
DO NOT apply if there are aquatic or wetland areas including aquacultural ponds within 50 meters downwind from the application area.
DO NOT apply if there are non-target vegetation or animal habitat within 5 meters downwind from the application area.

Clearfield Plus WHEAT
DO NOT use on CL STL and CL JNZ wheat varieties.
Clearfield BARLEY
Weeds Controlled: Brome (Bromus diandrus and B. rigidus), Barley (Hordeum vulgare) Barley grass (Hordeum leporinum) Indian hedge mustard (Sisymbrium orientale) Muskweed (Myagrum perfoliatum), Oat (Avena sativa)
Triticale (Triticosecale spp) Wheat (Triticum aestivum)
– non Clearfield varieties Wild oat (Avena fatua) Wild radish (Raphanus raphanistrum), Wild turnip (Brassica tournefortii)
Rate: 375-750mL/ha plus Hasten or Kwickin at 0.5L/100L spray volume
Critical Comments: NOT for use on Clearfield wheat varieties Clearfield
STL and Clearfield JNZ.
Apply to Clearfield Plus wheat crops from the 3 leaf stage to 1st node stage (Z31). Apply to Clearfield barley crops from the 5 leaf stage to 1st node stage (Z31).
DO NOT apply to Clearfield Plus wheat or Clearfield barley after the 1st node stage (Z31).
Applications should be targeted at grass weeds when the majority are in the 2-4 leaf stage and only when within the recommended crop stages.
Application to multi-tillered crops may impair weed control because of poor contact and coverage of weeds.
– see Compatibility. Tank mixes with Lontrel Advanced Herbicide at 75mL/ha will provide control of composite and legume weeds. Tank mixes with Polo 570 LVE Herbicide at 500mL/ha will provide control of composite and brassicaceous weeds. The control of brassicaceous weeds will depend on the status of Group B resistance in the population. The addition of Polo 570 LVE will improve control and provide an additional mode of action for resistance management. If other weeds require control, apply appropriate herbicides at least two weeks before or after Intervix and only when signs of regrowth or renewed vigor appear, otherwise the effects of the early treatment may affect the performance of the subsequent treatment.

Weeds Controlled: Annual ryegrass (Lolium rigidum), Dense flower fumitory (Fumaria densiflora) Marshmallow (Malva parviflora) Sub clover (Trifolium subterraneum)
Suppression: Bedstraw spp. (Galium tricornutum and G.aparine) Doublegee (Emex australis) Silver grasses (Vulpia bromoides and V. myuros)
Rate: 600-750mL/ha plus Hasten or Kwickin at 0.5L/100L spray volume
Critical Comments: Weed species will either be controlled or suppressed. In both cases, surviving plants will be stunted and will be uncompetitive with the crop, and seed set will be prevented or greatly reduced.
The control of annual ryegrass varies from excellent to poor depending on the status of Group B resistance in the population and environmental conditions. Where the population is expected to exceed 200 plants/m2, or a high level of control is required, or the ryegrass is known to be resistant or thought to be developing resistance, an application of a suitable pre-emergent should be made prior to sowing. A follow up grass selective herbicide may
also be necessary.

CANOLA
varieties with Clearfield technology only
Weeds Controlled: Indian hedge mustard (Sisymbrium orientale) Muskweed (Myagrum perfoliatum), Wild radish (Raphanus raphanistrum), Wild turnip (Brassica tournefortii)
Rate: 300–500mL/ha plus Hasten or Kwickin at 0.5L/100L spray volume
Critical Comments: Read Follow Crop comments and restrictions on the label prior to use.
Apply to crop at the 2 to 6 leaf stage. DO NOT apply after the 6 leaf stage.
Apply to actively growing weeds in the 3-leaf to 2-tiller stage and broadleaf weeds in the 2 to 6 leaf stage.
Use the higher rate when weed numbers are high or towards the upper end of the recommended growth stages, or when the crop is at the 5 to 6 leaf stage to ensure better contact and coverage.
If other weeds require control, apply appropriate herbicides at least two weeks after Intervix Herbicide and only when signs of regrowth or renewed vigour appear, or the effects of Intervix Herbicide may affect their performance.

Weeds Controlled: As above plus: Capeweed (Arctotheca calendula), field pea (Pisum sativum), narrow leaf lupin (Lupinus angustifolius), sub clover (Trifolium subterraneum) 
Rate: 300 to 500 mL/ha plus Lontrel Advanced Herbicide at 75 to 150 mL/ha plus Hasten or Kwickin at 0.5L/100L spray volume
Critical Comments: Refer to critical comments for 300 to 500 mL/ha alone. Lontrel Advanced Herbicide aids in the control of legume and composite weed species. Refer to the Lontrel Advanced Herbicide label. Use rates above 75 mL/ha when these weeds are primary weeds in the paddock and when required by their growth stage.
Lontrel Advanced Herbicide above 75 mL/ha can slightly impair grass control. The addition of Lontrel Advanced Herbicide does not affect the control of wild radish and wild turnip.
(Refer to the Compatibility section of this label and the Lontrel Advanced Herbicide label for further details of use).

Weeds Controlled: 
Non-Clearfield: Barley (Hordeum vulgare), barley grass (Hordeum leporinum), great brome (Bromus diandrus), Indian hedge mustard (Sisymbrium orientale), oat (Avena sativa), rigid brome (Bromus rigidus), marshmallow (Malva parviflora), sub clover (Trifolium subterraneum),
Non-Clearfield wheat (Triticum aestivum), wild oat (Avena fatua), wild radish (Raphanus raphanistrum), wild turnip (Brassica tournefortii)
Suppression only: Annual ryegrass (3) (Lolium rigidum), bedstraw spp. (Galium tricornutum and G. aparine), doublegee (Emex australis), silver grasses (Vulpia bromoides and B. myuros)
Rate: 600 to 750 mL/ha plus Hasten or Kwickin at 0.5L/100L spray volume
Critical Comments: Apply to crop at the 2 to 6 leaf stage.
DO NOT apply after the 6 leaf stage.
Apply to actively growing grass weeds in the 3-leaf to 2-tiller stage and broadleaf weeds in the 2 to 6 leaf stage.
Use the higher rate when weed numbers are high or towards the upper end of the recommended growth stages, or when the crop is at the 5 to 6 leaf stage, to ensure better contact and coverage.
Weeds will either be killed in high numbers (weeds controlled) or in moderate numbers (weeds suppressed). In both cases, surviving plants will be stunted and will be uncompetitive with the crop, and seed set will be prevented or greatly reduced.
If other weed species require control, apply appropriate herbicides at least two weeks after Intervix and only when signs of regrowth or renewed vigour appear or the effects of Intervix may affect their performance.
(3) The control of annual ryegrass varies from excellent to poor depending on the status of Group B resistance in the population and environmental conditions. Where the population is expected to exceed 200 plants per sqm, or a high level of control is required, or the ryegrass is known to be resistant or thought to be developing resistance, an application of a pre-emergent herbicide should be made prior to sowing. A tank mix with a grass selective herbicide may also be necessary.

Weeds Controlled: As above plus capeweed (Arctotheca calendula), field pea (Pisum sativum), narrow leaf lupin (Lupinus angustifolius)
Rate: 600 to 750 mL/ha plus Lontrel Advanced Herbicide at 75 to 150 mL/ha plus Hasten or Kwickin at 0.5L/100L spray volume
Critical Comments: Refer to critical comments for 600 to 750 mL/ha alone.
DO NOT apply after the 6 leaf stage.
Lontrel Advanced Herbicide aids in the control of legume and composite weed species. Refer to the Lontrel Advanced label. Use rates above 75 mL/ha when these weeds are primary weeds in the paddock and when required by their growth stage.
Lontrel Advanced above 75 mL/ha can slightly impair grass control.
The addition of Lontrel Advanced does not affect the control of other weeds controlled by Intervix.
(Refer to the Compatibility section of this label and the Lontrel Advanced label for further details of use).

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

WITHHOLDING PERIODS
GRAZING
CLEARFIELD PLUS WHEAT AND CLEARFIELD BARLEY: DO NOT GRAZE OR CUT FOR STOCK FOOD FOR 4 WEEKS AFTER APPLICATION.
CLEARFIELD CANOLA:
DO NOT GRAZE OR CUT FOR STOCK FOOD FOR 5 WEEKS AFTER APPLICATION.
HARVEST
ALL CROPS: NOT REQUIRED WHEN USED AS DIRECTED.

GENERAL INSTRUCTIONS
Intervix Herbicide is for use in Clearfield Plus wheat, Clearfield barley, and Clearfield canola. Varieties with Clearfield technology are those that have been bred specifically to be tolerant to Intervix.
Intervix Herbicide is absorbed through the leaves, green stems and roots of susceptible weeds and moved from the point of contact throughout the plant. Weeds will either die or will remain stunted and will not compete with the crop. Symptoms of kill may take one to two weeks to develop with death occurring up to one month from treatment. Symptoms first appear at the growth points where young foliage becomes discoloured and distorted before dying.
Intervix Herbicide is primarily a post-emergence product. Best results will be achieved when good contact and coverage of weeds occurs and weeds are actively growing. The product must be mixed with Hasten or Kwickin as per the Directions for Use.
Intervix Herbicide also has some residual soil activity under good soil moisture conditions. Residual effects on weeds can be reduced when dry soil conditions follow application before the herbicide has moved to the root zone. Best results will be achieved when application is made to moist soil or if approximately 10 mm rain follows within several days of application.
Vigorous crop growth will assist in suppressing weeds not completely killed and those germinating later.

MIXING
Intervix Herbicide is a water-soluble liquid (SL) formulation. Pour the required amount of the product into a spray tank containing almost the total amount of water required. Mix thoroughly. If Intervix is added during filling, foaming may occur. If excessive foaming becomes a problem, add a silicone based antifoaming agent at the manufacturers recommended rate. Do NOT use a suction probe unless the antifoaming agent has already been added to the spray tank water. Consult your distributor for specific information on suitable antifoaming agents.
When tank mixing this product with other recommended compatible products, first add the other product(s) to the tank and mix thoroughly before adding Intervix.
Intervix may be applied in hard or soft water.
The product is corrosive to mild steel. Use ONLY stainless steel, fibreglass, plastic or plastic-lined containers for mixing, storage and application.

APPLICATION
DO NOT apply by aircraft.
Apply in minimum 70L water per hectare. When the crop is very leafy or when the total weed population exceeds 200plants/m2, apply in a minimum of 100L water per hectare to improve contact and coverage. Intervix Herbicide should be applied a minimum of two hours before rainfall or irrigation. If tank-mixed with other products, follow recommendations for the mixing partner should these extend beyond two hours.

EQUIPMENT CLEAN-UP
Thoroughly flush all spray equipment with water following the use of Intervix Herbicide and before use with other products. If tank-mixed with other products, also follow clean-up procedures recommended for the mixing partner.

COMPATIBILITY
Intervix is chemically compatible with FASTAC Duo Insecticide, and Le-MatTM4 290SL Insecticide. It is also chemically and biologically compatible with Lontrel Advanced Herbicide, Polo 570 LVE, Thistle-killem 750, Bromicide 200, Bromicide MA, and Achieve Herbicide and chemically compatible with Havoc Herbicide and Select Herbicide.
DO NOT tank mix with foliar fertilisers.
All tank mixes are chemically stable over a 24-hour period. In the event of delayed spraying, store tank load out of direct sunlight and maintain agitation if possible. Mixes with Lontrel Advanced a are also biologically stable over a 24-hour delay. Biological stability of other mixes is unknown.
Mixes with Lontrel Advanced in Clearfield Plus wheat and Clearfield barley.
Tank mixes with Lontrel Advanced at 150mL/ha will provide control of composite and legume weeds. Refer to Lontrel Advanced label.

Mixes with Polo 570 LVE in Clearfield Plus wheat and Clearfield barley
Tank mixes with Polo 570 LVE Herbicide at 500mL/ha will provide control of composite and brassicaceous weeds. Refer to Polo 570 LVE label.

Mixes with Lontrel Advanced in Clearfield canola
Lontrel Advanced Herbicide aids in the control of legume and composite weed species, such as Annual Medics (Medicago spp), Capeweed (Arctotheca calendula), Chickpea (Cicer arietinum), Faba bean (Vicia faba), Field pea (Pisum sativum), Lentil (Lens culinaris), Narrow leaf lupin (Lupinus angustifolius). Use rates above 150mL/ha when these weeds are primary weeds in the paddock and when required by their growth stage. Lontrel Advanced above 150mL/ha can slightly impair grass control. For Chickpea, Faba bean, Lentil: If targeting Chickpeas and Lentils up to 6 leaf stage and Faba beans up to 4 leaf stage, use a tank mix of Intervix with 250mL/ha Lontrel Advanced. The addition of Lontrel Advanced does not affect the control of other weeds controlled by Intervix Herbicide. Refer to the Lontrel Advanced label.

RE-ENTRY
DO NOT re-enter treated areas until spray has dried. If re-entry is necessary wear cotton overalls buttoned to the neck and wrist (or equivalent clothing) and chemical resistant gloves.

RESISTANT WEEDS WARNING
GROUP B HERBICIDE
Intervix Herbicide is a member of the imidazolinone group of herbicides. The product has the inhibitors of acetolactate- synthase (ALS) mode of action. For weed resistance management, the product is a Group B herbicide.
Some naturally-occurring weed biotypes resistant to the product and other Group B 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 B herbicides. Since the occurrence of resistant weeds is difficult to detect prior to use, BASF Australia Ltd accepts no liability for any losses that may result from failure of this product to control resistant weeds.

BEST MANAGEMENT PRACTICE (BMP) PROGRAM
A detailed program has been developed that outlines sound agronomic and integrated weed management practices, designed to optimise the performance of the Clearfield Production Systems and minimise the potential for the development of herbicide resistance in weed populations.
Consultation on BMP should be undertaken with a Clearfield-accredited agronomist prior to use of Intervix Herbicide in the Clearfield Production Systems for wheat, barley and canola. Implementation of the BMP is an essential part of herbicide resistance management.

FOLLOWING CROPS
This product is broken down in the soil by microbes in wet, aerobic conditions. Under conditions that do not favour breakdown, carry-over soil residues can affect susceptible follow crops. Normally safe residue levels may still affect follow crops when soil nutrition is low or marginal, when cold and very wet soil conditions prevail, or when soil pathogens or nematodes are present. As environmental and agronomic factors make it impossible to eliminate all risks associated with this product, rotational crop injury is always possible.

Note: when the intention is to grow cereals on Clearfield canola stubble (treated with Intervix) self-sown canola volunteers must be removed before they mature beyond 2-leaf, all macro and micro-nutrients must be maintained at levels necessary to grow the planned crops, and sulfonylureas must not be used.

The following minimum re-cropping intervals (months after application) should be observed.

Months after Application: 0
Follow Crops: Clearfield Plus wheat, Clearfield wheat, Clearfield barley, Clearfield canola

Months after Application: 10
Follow Crops: Chickpeas, Faba beans, Field peas, Lucerne, Lupins, Pasture legumes, vetch, Oats (1), Triticale (1), Non-Clearfield Barley, Non-Clearfield Wheat

Months after Application: 34
Follow Crops: Conventional and other herbicide tolerant canola, All other crops

(1) Non-Clearfield Barley, Oats, Triticale, Non-Clearfield Wheat:
The following additional requirements apply if it is intended to sow these cereals during the next winter season:
- DO NOT apply Intervix later than the end of August (no later than the end of July in WA).
- DO NOT use Intervix in areas where rainfall from spraying to sowing of cereals is expected to be below 150 mm (for 300 – 375 mL/ha use), 200 mm (for up to 500 mL/ha use) and 250 mm (for 600 – 750 mL/ha use).
- DO NOT use above 375 mL/ha in the Lower Great Southern region of Western Australia.

For all situations, if expected rainfall is not received following use of Intervix, consult your local BASF representative before planting non-Clearfield cereals. In calculating rainfall actually received, place greater emphasis on rain received from application up to the end of Spring and lesser emphasis on break rains. If single isolated heavy summer and autumn falls and break rains are required to achieve rainfall targets, it may not be safe to sow non-Clearfield cereals within 10 months of application. Consult your local BASF representative for advice.

PROTECTION OF CROPS, NATIVE AND OTHER NON-TARGET PLANTS
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.
DO NOT spray within 50 m of wetlands or waterways.

CROP SAFETY
This product may, in some circumstances, lead to transient crop yellowing and temporary slowing of growth of Clearfield Plus wheat, Clearfield barley and Clearfield canola but plants soon recover and yield is unaffected. This effect may be more pronounced when the product is used under poor growth conditions.
The Clearfield wheat varieties Clearfield STL and Clearfield JNZ have limited tolerance to Intervix Herbicide. Application of Intervix to these wheat varieties can cause unacceptable injury especially under cold, wet conditions. Intervix Herbicide should not be used on these varieties.
DO NOT use this product on any canola variety other than certified varieties with Clearfield technology. Extreme crop damage and/or death will result to conventional and other herbicide tolerant wheat and canola varieties.