Atlantis OD

Manufacturer
BAYER
Category
Herbicides
Registered until
2024-06-30
Registration number
62551
Active materials
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GROUP B HERBICIDE

For the post-emergent control of wild oats and annual phalaris, and suppression of brome grass, barley grass and annual ryegrass in wheat.

GENERAL INSTRUCTIONS
Atlantis OD is a selective sulfonylurea herbicide. It is predominantly a foliar herbicide with less activity via the soil. Atlantis OD will not reliably control weeds that emerge after spraying. Results are best under good growing conditions and application to weeds or crop under stress should be avoided.

Resistant Weeds Warning
Atlantis OD Selective Herbicide is a member of the sulfonylurea group of herbicides and has the inhibitor of ALS mode of action. For weed resistance management Atlantis OD is a Group B herbicide. Some naturally-occurring weed biotypes resistant to Atlantis OD, and other Group B herbicides, may exist through normal genetic variability in any weed population. These resistant individuals can eventually dominate the weed population if these herbicides are used repeatedly. These resistant weeds will not be controlled by Atlantis OD or other Group B herbicides. Do not rely exclusively on Atlantis OD for weed control. Use as part of an integrated weed management program involving herbicides with other modes of action and non-chemical methods of control. CropLife Australia resistance management strategies are available from your local agricultural chemical supplier. Refer to these strategies for details of how to manage the build up of resistant weeds on your farm. Since occurrence of resistant weeds is difficult to detect prior to use Bayer CropScience Pty. Ltd. accepts no liability for
any losses that may result from the failure of Atlantis OD to control resistant weeds.

Use of Surfactant / Wetting Agent
It is recommended that Atlantis OD be applied with the addition of BS1000 bio-degradable surfactant at 0.25% v/v or
either of the crop oil concentrates, Hasten or Rocket, at 1% v/v.
When applying Atlantis OD for suppression of brome grass or barley grass, only use Hasten or Rocket.
The suitability of other non-ionic wetting agents or crop oil concentrates should be confirmed with Bayer CropScience
prior to mixing with Atlantis OD.
Note: Crop effects (discolouration and slowed development) may be increased with the use of Hasten or Rocket spray
adjuvants, however under normal growing conditions this should not result in any yield loss.

Crop Safety
- Do not apply to any crop other than wheat.
- Do not apply to the wheat variety Brookton
- Westonia wheat may show reduced tolerance to Atlantis OD in some situations, especially during a dry finish to the season. Ensure adequate crop nutrition and that crop is at least the 3 leaf (Z13) stage at application.
- Wheat should be at the 3 leaf stage (Z13 growth stage), or more advanced, before application of Atlantis OD.
- Do not apply to wheat that is physically damaged (e.g. by hail, wind, insect attack).
- Some crop yellowing and growth retardation may occur within 5 weeks of application. Growth retardation will be increased if the crop is affected by root disease (e.g. cereal cyst nematode, rhizoctonia, take-all (haydie)), nutritional stress, waterlogging, drought stress, excessively cold conditions or previous herbicide treatment.
- Application to very dry sandy soils followed by soaking rainfall may cause significant crop effects.
- Crop damage will be increased in highly alkaline soils (soil pH > 8.5 as determined by soil in water suspension).
- Do not apply to crops not actively growing due to cold and wet conditions or drought stress.
- Do not overlap when spraying or double spray corners.

Application
Ensure that complete and even spray coverage of all weeds is achieved.

Mixing
Half fill the spray tank with water, then with agitators in motion, add the correct amount of Atlantis OD directly into the spray tank. Add other relevant compatible herbicides, then wetting agent or crop oil as recommended. Complete filling the tank with agitators in motion. Agitation must continue before and during spraying.

Equipment
Ground Sprayers

Standard boom sprayers only are recommended and must be fitted with by-pass or mechanical agitation. It is recommended that 50 to 80 L water/ha is applied with a droplet size of 200 to 300 microns (application as a FINE/MEDIUM spray as defined by ASAE S572 Standard). The use of flat fan nozzles is recommended. Nozzles creating coarse or very coarse spray qualities have not been thoroughly investigated at this time and cannot be recommended. Contact your Bayer CropScience representative for advice before applying this product through such
nozzles.
Aircraft
Do not apply Atlantis OD by aircraft.

Sprayer Clean Up
The sprayer must be decontaminated before being used to spray crops other than cereals.
Ensure that the following operation is carried out in an area that is clear of waterways, desirable vegetation and tree roots, and preferably in an area where drainings can be contained.
1. Drain sprayer completely and wash out tank, boom and hoses with clean water.
2. Drain again.
3. Fill the tank with clean water and add 300 mL of chlorine bleach (containing 4% chlorine) per 100 L of water with agitation running.
4. Flush some bleach solution through booms and hoses and allow remainder to agitate in tank for 10 minutes.
5. Remove nozzles and filters and leave to soak in a bleach solution of 500 mL per 10 L of water while tank cleaning is in progress.
6. Drain tank and repeat the procedure of flushing with bleach solution.
7. Flush the tank, boom and hoses with clean water.

Compatibility
Zinc-based foliar fertilisers:
Must not be mixed with Atlantis OD as a loss of efficacy can occur.
Lontrel: Atlantis OD may be mixed with Lontrel. Use BS1000 at 0.25% v/v or a crop oil concentrate (see surfactant/wetting
agent recommendations) at 1% v/v as recommended for the weeds being controlled.
Chlorpyrifos-based formulations: Must not be mixed with Atlantis OD as unacceptable crop effects may occur.
Dimethoate (maximum of 500 mL/ha): Use BS1000 at 0.25% v/v or a crop oil concentrate (see surfactant/wetting agent recommendations) at 1% v/v as recommended for the weeds being controlled.
Tigrex (maximum of 500 mL/ha): BS1000 at 0.25% v/v must be used when mixing Tigrex. Do not apply with a crop oil as excessive crop damage may occur. If spraying brome or barley grass more reliable suppression will be obtained if Atlantis OD is applied alone and a crop oil concentrate (see surfactant/wetting agent recommendations) is used.
Jaguar (maximum of 500 mL/ha): Grass weed control may be adversely affected and the level of chlorosis and slowed crop growth may be increased. BS 1000 at 0.25% v/v must be used when mixing Jaguar. Do not apply with a crop oil as excessive crop damage may occur. If spraying brome or barley grass more reliable suppression will be obtained if Atlantis OD is applied alone and a crop oil concentrate (see surfactant/wetting agent recommendations) is used.
Buctril MA (maximum of 1.0 L/ha): Atlantis OD may be mixed with Buctril MA herbicide. Use BS 1000 at 0.25% v/v or a crop oil concentrate (see surfactant/wetting agent recommendations) at 1% v/v as recommended for the weeds being controlled.
L. V. E. MCPA (maximum of 500 mL/ha): Atlantis OD may be mixed with L. V. E. MCPA herbicide. Use BS 1000 at 0.25% v/v or a crop oil concentrate (see surfactant/wetting agent recommendations) at 1% v/v as recommended for the weeds being controlled.
Precept (maximum of 1.0 L/ha): Atlantis OD may be mixed with Precept herbicide. Use a crop oil concentrate as directed on the Precept label. Rates of Precept higher than 1.0 L/ha have not been evaluated. Before mixing Precept at rates higher than 1.0 L/ha consult Bayer CropScience.

Note:
- For advice on mixing with other products please contact your local Bayer CropScience representative.
- Do not mix Atlantis OD with more than one compatible product plus the appropriate adjuvant (BS 1000 or a crop oil concentrate).

DIRECTIONS FOR USE
Restraints

DO NOT use if rainfall or irrigation is to occur within 8 hours of application.
DO NOT apply to crops undersown with legumes.
DO NOT apply to wheat before the 3-leaf stage (Z13).
DO NOT apply without surfactant/wetting agent, as detailed under ‘Use of Surfactant/Wetting Agent’ in the General
Instructions
DO NOT apply to paddocks where there is a high risk of weeds resistant to Group B herbicides.
DO NOT apply to the wheat variety Brookton

Note
Atlantis OD is a sulfonylurea herbicide. Atlantis OD will substantially reduce the growth of many weeds rather than give complete plant kill. Refer to the critical comments in the Directions for Use Table below, for directions on specific weeds.

WHEAT
Weed:
Brome grass (great brome, Bromus diandrus)
Weed stage:
1 leaf to 3 leaf, 1 tiller (Z11 to Z13,21)
Rate / ha:
330 mL
Critical comments: Suppression of brome grass. Will substantially reduce the growth of brome grass and its ability to compete with the crop and will reduce seed set but may not give a significant reduction in plant numbers. Apply generally within 4 to 7 weeks after sowing. Apply when the majority of brome grass is at the 1 leaf to 3 leaf, 1 tiller stage (Z11 to Z13,21). Efficacy on larger plants that may have emerged before the crop may be poor. Do not use for suppression of dense brome grass populations (>150 plants/m2).
Suppression of brome grass may be improved with the use of Hasten at 1% v/v. Refer to ‘Use of Surfactant/Wetting Agent’ under General Instructions.

Weed: Annual ryegrass (Lolium rigidum)
Weed stage:
1 leaf to 3 leaf, 1 tiller (Z11 to Z13,21)
Rate / ha:
330 mL
Critical comments:  Suppression of annual ryegrass. Will substantially reduce the growth of annual ryegrass and its ability to compete with the crop and will reduce seed set but may not give a significant reduction in plant numbers.
Apply generally within 4 to 7 weeks after sowing. Do not use for control of dense annual ryegrass populations (>200 plants/m2).

Weed: Barley grass (Hordeum leporinum)
Weed stage:
1 to 4 leaf, 2 tillers (Z11 to Z14, 22)
Rate / ha:
330 mL
Critical comments:  Suppression of barley grass. Will substantially reduce the growth of barley grass and its ability to compete with the crop and will reduce seed set but may not give a significant reduction in plant numbers. Apply generally within 4 to 7 weeks after sowing. Apply when the majority of barley grass is less than the early tillering stage (Z14,22). Efficacy on larger plants may be poor.
Suppression of barley grass may be improved with the use of Hasten at 1% v/v. Refer to 'Use of Surfactant / Wetting agent' under General Instructions.

Weed: Wild oats (Avena spp.)
Weed stage:
1 leaf to 3 leaf, 1 tiller (Z11 to Z13,21)
Rate / ha:
330 mL
Critical comments: Apply generally within 4 to 7 weeks after sowing.
Do not use for control of dense wild oat populations (>150 plants/m2).
Application to wild oats at more advanced growth stages or to dense populations will result in suppression of wild oats only.
Growth of wild oats and the ability to compete with the crop will be reduced but plants numbers may not be significantly reduced.

Weed: Annual phalaris, paradoxa grass (Phalaris paradoxa only)
Weed stage:
1 leaf to 3 leaf, 1 tiller (Z11 to Z13,21)
Rate / ha:
330 mL
Critical comments: Apply generally within 4 to 7 weeks after sowing.
Do not use for control of dense phalaris populations (>300 plants/m2). Other phalaris species may not be adequately controlled with Atlantis OD.

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

WITHHOLDING PERIODS
Harvest: DO NOT HARVEST FOR 8 WEEKS AFTER APPLICATION
Grazing/Stockfood: DO NOT GRAZE OR CUT FOR STOCKFOOD FOR 4 WEEKS AFTER APPLICATION

Registered for culturesRatePreharvest Interval
Winter wheat330 ml56
Spring wheat330 ml56