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GROUP A HERBICIDE

For post-emergent control of annual ryegrass and wild oats in wheat, barley, triticale and cereal rye.

GENERAL INSTRUCTIONS
Results are best under good growing conditions, when the crops and weeds are actively growing. Application to weeds or crops under stress (e.g. due to continuous frosts, dry, waterlogged, nutrient deficient or diseased conditions) should be avoided. Wild oats germinating after application will sometimes be stunted, and will not seriously compete with the crop. Application to crops with a covering of dew has been successful but should be avoided in general. If spraying cannot be completed, spray mixtures of Hoegrass 500 in clean water may be left overnight without significant loss of efficacy. The mixture should be well agitated before spraying re-commences. It is not recommended that this be general practice.

Resistant Weeds Warning
Hoegrass 500 Selective Herbicide is a member of the aryloxyphenoxypropionate group of herbicides. Hoegrass 500 is an inhibitor of acetyl coA carboxylase. For weed resistance management Hoegrass 500 is a Group A herbicide. Some naturally-occurring weed biotypes resistant to Hoegrass 500 and other Group A 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 Hoegrass 500 or other Group A herbicides.
Paddocks sprayed with Hoegrass 500 should be closely monitored if the paddock has a previous history of diclofop-methyl usage. If resistance is suspected, contact Bayer CropScience Pty. Ltd. or the local Department of Agriculture. To avoid further resistance problems, do not use Hoegrass 500 or other Group A herbicides. Further advice on resistance management strategies is available from your local Department of Agriculture or Bayer CropScience representative. Resistance should not be confused with poor application techniques, conditions or timing.
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 Hoegrass 500 to control resistant weeds.

Export of Treated Produce
Growers should note that suitable MRLs or import tolerances may not be established in all markets for produce treated with Hoegrass 500 Selective Herbicide. If you are growing produce for export, please check with Bayer CropScience Pty. Ltd. for the latest information on MRLs and import tolerances BEFORE using Hoegrass 500.

Application
Aim to apply Hoegrass 500 to the base (growing point) of weeds. Equipment must be set up to ensure penetration of the crop canopy.

Mixing
Add the required quantity of Hoegrass 500 directly to the spray tank when about two-thirds full. Top up with water to required volume, with agitators in motion. Add wetting agent just before tank is full of water to avoid excessive frothing.

Equipment
Ground Sprayers - Standard boom sprays only are recommended and must be fitted with by-pass or mechanical agitation. It is recommended to use approximately 50 to 150 L water/ha and a droplet size of 200 to 300 microns. Do not apply with boomless jets or misters. Application should be made using an enclosed cabin where possible.
Aircraft - Best results have been obtained using 20 to 30 L water/ha with a steady cross wind and a swath width of 15 to 18 metres. Aim for a droplet size of 200 to 300 microns. Do not exaggerate swath width. Aircraft operators should consult manufacturer for details. Flaggers should be protected by enclosed cabins where possible.

Compatibility
1. Mixtures of Hoegrass 500 with broadleaf herbicides may lead to a reduction in grass weed control and/or varying degrees of crop discolouration/damage. These effects can be minimised by closely following all use recommendations and restrictions.
The following table summarises the current knowledge on compatibility in wheat, barley, triticale and cereal rye crops:
Tigrex (Up to 0.8 L/ha) - Ryegrass (Yellow); Wild oats (Yellow);
Jaguar (Up to 0.75 L/ha) - Ryegrass (Green); Wild oats (Yellow);
Eclipse 100 SC (Up to 50 mL/ha) - Ryegrass (Green); Wild oats (Yellow);
Broadstrike (Up to 25 g/ha) - Ryegrass (Green); Wild oats (Red);
MCPA LVE 500 g/L (Up to 700 mL/ha) - Ryegrass (Yellow); Wild oats (Yellow);
bromoxynil - Ryegrass (Green); Wild oats (Green);
Buctril MA (Up to 1.4 L/ha) - Ryegrass (Yellow); Wild oats (Yellow);
Glean (Up to 15 g/ha) - Ryegrass (Yellow); Wild oats (Yellow);
Lontrel (Up to 150 mL/ha) - Ryegrass (Green); Wild oats (Green);
Ally - Ryegrass (Red); Wild oats (Red);
Wildcat 110 EC - Ryegrass (Green); Wild oats (Green).

Green Trials indicate no reduction in grass weed control when used as recommended. There may be minor crop discolouration in some cases.
These mixtures can be used with minimal loss of activity under good growing conditions with all label recommendations followed.
Yellow Trials indicate some reduction in grass weed control and/or minor crop discolouration at recommended rates, even under good growing conditions.
These mixtures will usually result in reduced grass weed control and cannot be recommended unless such efficacy loss and possible crop discolouration is accepted.
Red Trials at recommended rates indicate a severe reduction in grass weed control and/or significant crop injury. These mixtures cannot be recommended.

2. When mixing with broadleaf herbicides add surfactant e.g. BS1000, at the rate of 250 mL per 100 L of spray solution. Reductions in grass weed control (as indicated above) can be minimised by using a minimum of 80 L water per ha by ground and 30 L by air, and if wild oats are present, use 1.5 L Hoegrass 500/ha (except barley). Do not use Buctril MA at rates above 1.4 L/ha when mixing with Hoegrass 500.
3. Allow at least 10 days between any application of Hoegrass 500 and other herbicides containing 2,4-D, MCPA, dicamba or other similar sprays, which should preferably follow Hoegrass 500.
4. Where phalaris is present, Hoegrass 500 and Wildcat 110 EC may be applied together at the respective recommended rates. Wetting agent should be added to this mixture at the usual rate recommended on the Hoegrass 500 label.
5. Hoegrass 500 may also be mixed with the following insecticides without a significant loss of activity: dimethoate, omethoate and phosmet.

DIRECTIONS FOR USE
Restraints
DO NOT apply to weeds or crop under stress due to, for example, very dry, very wet, nutrient deficient, frosty or diseased conditions.
DO NOT apply if rainfall is expected within 2 hours.
DO NOT spray when temperatures are higher than 25ºC.

WHEAT, BARLEY, TRITICALE, CEREAL RYE
Weed: Annual (Wimmera) ryegrass
Weed stage: 2 to 4 leaf (Z12 to Z14)
Rate L/ha: 0.75
Critical comments: Apply generally 3 to 6 weeks after sowing, when cereals usually 2 to 5 leaves (Z12 to Z21).
For barley, apply only when crop is 4 to 5 leaf stage.
For all crops add wetting agent at 0.25% active ingredient to water in spray tank – e.g. 250 mL BS1000® /100 L water. This is irrespective of volume of water/ha or rate of Hoegrass 500.

Weed: Wild oats
Weed stage: 2 to 3 leaf (Z12 to Z13)
Rate L/ha: 1.1
Weed stage: 3 to 4 leaf (Z13 to Z14)
Rate L/ha: 1.5  (not barley)

Critical comments: For barley, apply only when crop is 4 to 5 leaf stage. Avoid double spraying (overlap) at the maximum  rate of 1.1 L/ha.
In crops other than barley, use 1.5 L rate if most weeds are 3 to 4 leaf and if spraying 4 to 6 weeks after sowing, especially in northern NSW and Qld. For all crops add wetting agent as above. Use 1.1 L rate only if growing conditions are very favourable and weeds are 2 to 3 leaf, 3 to 4 weeks after sowing, and cereals usually 2 to 3 leaf (Z12 to Z13).

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

WITHHOLDING PERIOD
Harvest (All crops) – WITHHOLDING PERIOD NOT REQUIRED WHEN USED AS DIRECTED
Grazing (All crops) - DO NOT GRAZE TREATED AREAS OR CUT FOR STOCK FOOD FOR 7 WEEKS AFTER APPLICATION.