Ireland

Acorn Barbarian

registration_data_unavailable
Barclay Chemicals - herbicide
02517

Contains GLYPHOSATE acid 360 g/l (30.7 % w/w) and ethoxylated tallow amine.

A systemic herbicide, as a soluble concentrate, for the control of most broad-leaved and grass weeds, especially scutch grass, in stubbles or in cultivated land,
grassland, set aside, pre-harvest in cereals and oilseed rape,linseed, peas (combining) and field beans, in orchards and forestry,on non-cropped areas around the farm and on industrial sites.

GENERAL INFORMATION
Acorn Barbarian is a foliar acting herbicide that controls annual and perennial grasses and most broad-leaved weeds when used as directed. It is translocated from treated vegetative growth to underground roots, rhizomes or stolons. Leaf symptoms, being a reddening then yellow of the foliage, are first seen on grass weeds but take longer to appear on broad leaved weeds.
It is particularly important that the weeds have sufficient leaf growth and are actively growing when treated.
Perennial grass weeds must have produced fresh leaves, which are green and vigorous. Common couch or scutch is most susceptible to Acorn Barbarian when it is tillering and when new rhizomes have begum to grow. This is usually when the plants have about 5 – 6 leaves, each with approximately 12-15cm (5-6”) of new growth.
The Majority of perennial broad-leaved weeds are most susceptible if treated when they are actively growing and are at or near flowering stage. Annual weeds should be actively growing with at least 5cm (2”) of leaf and broad-leaved weeds at least two expanded true leaves when sprayed. Couch or scutch grasses and other grass and broad-leaved weeds are less susceptible to Acorn Barbarian when growth is restricted by drought, waterlogging, frost, very high temperatures or natural dieback. Efficacy will be reduced if such conditions occur at or immediately after spraying.
Do not apply lime, fertiliser, farmyard manure, pesticides or similar materials within 7 days of Acorn Barbarian.

WEED CONTROL IN STANDING CEREAL CROPS (PRE-HARVEST)

Weeds Controlled: Scutch grass (Elymus repens), Black bent (Agrostis gigantea), Creeping bent (Agrostis stolonifera), Onion couch (Arrhenatherum elatius var. bulbosum) in winter barley only - see Note,
Many perennial broad-leaved weeds
Crops: Winter and spring wheat including durum wheat, and winter and spring oats destined for milling or feed. Winter and spring barley destined for malting or feed (consult purchasers of crops grown on contract and prospective purchasers of malting grade barley before treatment).
DO NOT TREAT CROPS INTENDED FOR SEED.
DO NOT TREAT UNDERSOWN CROPS.

Time
Spray when the moisture content of the grain measures less than 30%.
Target weeds must be green, actively growing and accessible to thespray.

Method 
Spray the crop and weeds overall. Use High clearance tractors with narrow wheels and crop dividers. Adjust boom height to maximise spray retention on the target weeds.
After spraying: wait at least 7 days before harvesting. Treated straw may be used for feed and litter, but must not be used for horticultural purposes, or it must be chopped and incorporated or removed, after which normal cultivations may be resumed.

Dose Rate
Annual weeds and grass or low couch or scutch grass infestations up to 25 shoots/m² or low levels of scutch grasses (0-25 shoots/m²): 2 l/ha
Medium levels of couch/scutch grasses (25-75 shoots/m²): 3 l/ha
High levels of couch/scutch grasses (75 plus shoots/m²): 4 l/ha
Perennial broad leaved weeds; other perennial grasses: 4 l/ha
Apply in 80 – 250 l/ha water.

Note: to gain successful control of onion couch with Acorn Barbarian, the weed must be treated BEFORE the bulbous bases have matured. Application when the bulbous bases have matured will not prevent regeneration of the weed. Early ripening winter barley is the only crop likely to present an opportunity for pre-harvest control of onion couch.

WEED CONTROL IN STANDING OILSEED RAPE AND LINSEED (PRE-HARVEST)

Weeds Controlled: Scutch grass (Elymus repens) Black bent (Agrostis gigantea)
Creeping bent (Agrostis stolonifera) Many perennial broad-leaved weeds.
Crops: Oilseed rape, winter or spring.
Linseed, winter or spring
This treatment is suitable only for uniform, evenly maturing crops proceeding to harvest in prime condition.

DO NOT TREAT CROPS INTENDED FOR SEED.

Time 
Spray 2-3 weeks before harvest when the natural ripening of the seed is progressing and the moisture content of the seed measures less than 30%.
Target weeds must be green, actively growing and accessible to the spray.

Method 
Spray the crop and weeds overall. Minimise crop damage by use of suitable equipment.
After spraying: wait at least 14 days before harvesting.
Direct combine harvest the crop when fit.
Treated straw must be chopped and incorporated or removed, after which normal cultivations may be resumed.

Dose Rate
Low-medium couch/scutch grass infestations up to 75 shoots/m²: 3 l/ha
Medium-high couch/scutch grass infestations over 75 shoots/m²: 4 l/ha
Perennial broad-leaved weeds, other perennial grasses: 4l/ha
Apply in 200-250 l/ha water.

WEED CONTROL IN FIELD BEANS AND PEAS (PRE-HARVEST)

Weeds Controlled: Scutch grass (Elymus repens) Black bent (Agrostis gigantea)
Creeping bent (Agrostis stolonifera) Perennial broad-leaved weeds
Crops: Field beans, winter or spring.
Peas to be harvested dry.
DO NOT TREAT CROPS INTENDED FOR SEED.
Note: This treatment is intended for weed control and not for crop desiccation.

Time 
Spray when the natural ripening of the seed is progressing and the moisture content of the seed measures less than 30%.
Target weeds must be green, actively growing and accessible to the spray.

Method 
Spray the crop and weeds overall.
Minimise crop damage by use of high clearance tractors with narrow wheels and crop dividers.
After spraying: Wait at least 7 days before harvesting.
Direct combine harvest the crop when fit.
Treated straw must be chopped and incorporated or removed, after which normal cultivations may be resumed.

Dose Rate
Low-medium couch/scutch grass infestations up to 75 shoots/m²: 3 l/ha
Medium-high couch/scutch grass infestations over 75 shoots/m²: 4 l/ha
Apply in 200-250 l/ha water.

MIXING
Tractor mounted sprayers
Pour the recommended quantity of Acorn Barbarian into the spray tank already half-filled with clean water and under agitation.
Top up the spray tank with more clean water to the required level, whilst maintaining agitation. Spray out on the day of mixing.
Knapsack Sprayers
Add the recommended quantity of Acorn Barbarian to the knapsack spray tank approximately one-third filled with clean water.
Agitate thoroughly with a clean rod or by shaking after replacing the lid until thoroughly mixed. Top up the tank with more clean water to the required level and agitate thoroughly before use. Spray out on day of mixing.
DO NOT MIX APPLY OR STORE ACORN BARBARIAN IN GALVANISED OR UNLINED MILD STEEL CONTAINERS OR TANKS.

APPLICATION & SPRAY QUALITY
Prepared spray solution should be applied as a MEDIUM spray at nozzle pressures not exceeding 2.5 bar (35 psi).
Acorn Barbarian is a systemic herbicide, active at low doses. Always take care to avoid spray drift. DO NOT SPRAY in windy weather or near to desirable species or amenity plants.

WEATHER
Avoid spraying if rain is expected within 12 hours. Applications are best made under dull, humid conditions. Weeds restricted by water stress may not be satisfactorily controlled. DO NOT spray during frosty weather or under windy conditions likely to result in spray drift.

SOILS
Acorn Barbarian may be used to control weeds on all mineral or organic soils or surfaces, including ash and gravel. Only weeds showing green leaf at the time of application can be killed. There is no residual activity with Acorn Barbarian.
Owing to soil variations, some scutch grasses may not be at a susceptible stage when sprayed and the treatment should be repeated in the following autumn for complete control.

DECAYING VEGETATION
Occasionally a slight check to crop growth may occur, particularly after direct drilling when crop seeds germinate amongst a mass of decaying foliage, stolons, rhizomes or roots. Thorough cultivations are necessary to disperse or bury decaying organic matter.
Consolidate loose soils and ensure crops are adequately fertilised and appropriate measures are taken to prevent insect and fungal damage to the following crop, especially where following grassland.

COMPATIBILITY
Acorn Barbarian may be applied in tank mix with Barclay Addup or other approved tallow amine ethoxylate surfactant. DO NOT apply lime, fertiliser, farmyard manure or similar materials within 7 days of Acorn Barbarian.

FUTURE PLANTING
Acorn Barbarian has no long-lasting herbicidal activity in soils after application. Agricultural and horticultural quality soils with perennial grass and broad-leaved weed burdens may be planted up with trees after not less than 7 days after application. It is preferable to plant most amenity plants after the treated vegetation has died back or after cultivation lest they be contaminated or smothered by the collapsing weed vegetation. Under normal weather conditions, cultivations may be conducted 5 days after treatment. Under poor growing conditions wait for the characteristic red/yellow leaf symptoms to appear on perennial weeds before cultivating.

RESISTANT STRAINS
Strains of some annual grasses, e.g. black-grass, wild-oat and Italian rye-grass, have developed resistance to herbicides which may lead to poor control. A strategy for preventing and managing such resistance should be adopted. Guidelines are available from your distributor, crop advisor or product manufacturer.

 

Effective
Crops
Glyphosate
BBCH
0 - 0
Registred norm
4 - 6
Preharvest Interval
-