A leaf and root absorbed, translocated, residual herbicide for the control of broad leaved and woody weeds in grasses.
7 APPLICATION METHODS AND TIPS:
Best results when plants are actively growing.
Apply to dry plants.
Don't apply by air when temperatures are more than 35 degrees C or wind more than 15 km/hr.
Maximum tank storage time - 1 week.
Rainfast in 1 hour.
Frost effects: Plants affected by frost are generally less susceptible to the herbicide.
Wind: Winds above 15 kph may lead to unacceptable drift. Winds below 3 kph may indicate inversion conditions which can lead to significant drift.
Inversions: Don't spray under inversion conditions.
Delta T and relative humidity: Avoid application when Delta T is greater than
Soil moisture at application:
Spray oils may improve weed control but may reduce selectivity on the crop.
10 WATER QUALITY:
Trace elements. Not compatible with many trace elements.
See HerbiGuide Compatibilities button.
If coarse droplets are being used then water rates around 200 L/ha is required. This is usually applied as 2 passes of 100 L/ha. Use of lower water volumes requires specialised set up to minimise drift. Contact HerbiGuide for more information.
Carrier volume: 30-400 L/ha
Nozzles: Flat fan.
Pressure: 150-400 kPa.
Adjust flow rate to keep blanket wet but not dripping. Set as low as possible, so that the ground or susceptible understorey is not contacted. Ground speeds of 10-15 kph are common. A pass in one direction followed by a pass in the opposite direction often leads to improved control especially in heavy stands of weed or where contact is limited or the weeds are not stiff.
Controlled Droplet Applicators (CDA):
Use a nozzle that delivers about 2 mL/sec. Use a slow (1 m/s) sweeping action to give a droplet density of 20 drops per square centimetre on the weed. Most operators use a marking dye.
Apply 50 mL shots to cover 5 m2 of weed and check that droplet density exceeds 20/cm2.
Hand lead high volume:
Ensure thorough coverage. Use water volumes around 1000 L/ha for low vegetation and up to 5000 L/ha for dense and tall vegetation. A number 6 to 8 tip is often used at a pressures of 300-600 kPa. (Pressures of 700-1500 kPa on the label are usually too high).
Ensure thorough coverage. Use water volumes around 1-5 L of spray mix per 10 square metres.
Apply with a slow sweeping motion over the weeds. Apply at low pressures of 50-200 kPa. Calibrate to ensure the correct rate of herbicide per hectare is being applied.
13 SPRAYER DECONTAMINATION:
Remove filters and clean separately. Rinse with soapy water (eg 500 mL or g of Drive, Dynamo, Omo or Surf per 100 L water) or water plus 0.25% wetting agent and run through boom. Rinse with water.
Remove filters and clean then soak in 500 mL household ammonia in 10 L water for 30 minutes.
Rinse sprayer with soapy water (eg 500 mL or g of Drive, Dynamo, Omo or Surf per 100 L water) or water plus 0.25% wetting agent and run through boom. Fill with 1% solution of ammonia and leave for several hours. Triple rinse with water. Or use a commercial spray tank and equipment cleaner.
Rinse nozzles and filters in water and replace.
Don't use chlorine based cleaners.
14 HERBICIDE RESISTANCE:
Unlikely to occur under normal use patterns. However, there may be populations of weeds that have or will develop resistance.
15 REPLANTING INTERVALS:
Replanting intervals may be longer under drought conditions or where there are extended periods where the soil is dry.
The label has an 18 month withholding for broad leaved crops following blanket wiper application which seems excessively long.
16 WITHHOLDING PERIODS:
* Check export slaughter interval for stock or meat destined for export markets.
ESI 3 days. (Stock that have consumed feed that was sprayed in the previous 42 days should have 3 days on clean feed).
EGI 42 days.
17 RE-ENTRY PERIOD:
Wear protective clothing if in contact with the crop before the spray has dried.
18 PROTECTIVE CLOTHING:
Cotton overalls, washable hat, elbow length neoprene gloves and face shield or goggles.
May leach on very sandy soils under high rainfall.
Soli pH has little effect on efficacy and breakdown.
Breaks down more quickly in high organic matter soils with high microbial activity.
20 MODE OF ACTION:
Uptake and translocation:
Absorbed through roots, leaves, bark or from the cut stump.
Hormone herbicide with wide ranging effects. Disrupts plant cell growth.
Residual Life and Breakdown:
Broad leaf species are generally more sensitive than grass species.
Most grasses are tolerant and most broad leaved species are sensitive.
Effect on Clover Species:
Damages clover as a spray or as residual in the soil.
Effect on Medic Species:
Damages medic as a spray or as residual in the soil.
Effect on Lucerne:
Damages lucerne as a spray or as residual in the soil.
Effect on Native Plants:
High rates kill most broad leaved native plants. Low rates can be quite selective and useful in many situations.
22 DISEASE AND INSECT EFFECTS:
23 PLANT SYMPTOMS:
Leaves usually turn red then wither within a few weeks of application then fall off.
Symptoms may take a week to a month to develop and in some species symptoms may only appear on the resumption of new growth.
Harmful if swallowed. Irritating to eyes and skin. Toxic to aquatic organisms.
Poison Schedule - S6
Mammalian toxicity - Low.
Acute oral LD50 - >2000 mg/kg (rats), [For comparison table salt is 3000 mg/kg]. Low toxicity if swallowed. Unlikely to be harmful unless large amounts are swallowed.
Skin - Acute dermal LD50 - > 2000 mg/kg (rabbit). Prolonged or repeated contact may cause moderate irritation or burn. Prolonged contact is not likely to result in absorption of harmful quantities.
Eye - May cause temporary, moderate eye irritation. May cause slight temporary corneal injury.
Vapour inhalation - LC50 - Low. Prolonged exposure is not likely to cause adverse effects. Excessive exposure to solvent inhalation may cause eye and respiratory irritation, headache, dizziness and narcotic effects.
Chronic oral toxicity NOEL (picloram) - 0.5-7 mg/kg/day for two years.
Not mutagenic or teratogenic (i.e. does not cause cancer or reproductive problems in animal tests). Triclopyr acid has caused effects on reproduction at doses that cause significant toxicity to parent animals.
Does not accumulate in the body.
Acceptable Daily Intake (ADI):
Other Species -
Birds - Aminopyralid is practically non toxic with an acute LD50 > 2000 mg/kg and a dietary LC50 >5000ppm.
Picloram is practically non toxic with an LD50 > 2000 mg/kg.
Triclopyr has slight to low toxicity. LD50 501-2000 mg/kg. It is practically non toxic on a dietary basis with an LC50 >5000 ppm.
Fish - Aminopyralid is slightly toxic to fish with LC50 and EC50 of 10-100 mg/L for sensitive species.
Picloram is moderately toxic.
LC50 = 1-10 mg/L for sensitive species.
Triclopyr butoxyethyl ester is toxic to fish and moderately toxic to other aquatic organisms. In soil and water it breaks down to triclopyr acid which has low toxicity.
LC50 = 0.1-1 mg/L is sensitive species.
Invertebrates - toxicity.
Bees - Aminopyralid, picloram and triclopyr have low toxicity. Aminopyralid, picloram and triclopyr butoxyethyl ester have an acute oral and contact LD50 >100 ug/bee.
Livestock: Triclopyr butoxyethyl ester is moderately toxic to livestock. In soil and water it breaks down to triclopyr acid which has low toxicity.
Triclopyr and picloram do not accumulate in animal systems.
25 TOXICITY SYMPTOMS:
26 FIRST AID:
Contact a doctor or Poisons Information Centre on 13 11 26.
If Swallowed - Contact a doctor immediately. Sip a glass of water if patient is able to swallow. Do not induce vomiting unless instructed by a doctor. Never give fluids or induce vomiting if the patient is unconscious or convulsing.
If on Skin - Wash skin thoroughly with soap and water.
If in Eyes - Flush with water for 15 minutes. See a doctor.
If Inhaled - Remove patient from contaminated area to fresh air. If patient is not breathing then give artificial respiration and call an ambulance.
Advice to Doctor
No specific antidote. Treat symptomatically with supportive care.
27 ENVIRONMENTAL FATE:
Picloram ester and triclopyr ester are rapidly converted to the parent acids in soil, water, plants and animals.
Picloram is more residual than aminopyralid which is more residual than triclopyr.
Aminopyralid in the air has a tropospheric half life of 6.426 days.
Aminopyralid is not readily biodegradable on OECD guidelines.
Picloram is broken down in soil by photo degradation and microbial action and has a half life in soil ranging from 167-513 days under aerobic conditions. Under anaerobic conditions the half life is >300 days. It normally remains in the top 30 cm of soil but may be found deeper on soils with poor adsorption properties.
Picloram has a half life in water of 1 to 40 days in water depending mainly on sunlight intensity. It is broken down in water by ultra violet radiation with a half life of 2.3-9.58 days. It is stable to hydrolysis at neutral to alkaline pH with a hydrolysis half life of >1.8 years. Theoretical Oxygen Demand (ThOD) is 0.99 p/p.
Picloram in the air has a tropospheric half life of 12.21 days.
Picloram is not readily biodegradable on OECD guidelines.
Triclopyr butoxyethyl ester is broken down in soil by photo decomposition and microbial action and has a half life in soil of 6-52 days under aerobic conditions. Minimal leaching may occur on light soils in high rainfall conditions.
Triclopyr butoxyethyl ester decomposes in water with a half life of less than 1 day. It has a photolysis half life in water of 6.6 days and a hydrolysis half life of 12 hours. OECD biodegradation after 28 days was 18%. Theoretical Oxygen Demand (ThOD) is 1.39 p/p.
Triclopyr butoxyethyl ester is not readily biodegradable on OECD guidelines.
It has an EPA classification for soil mobility that ranges from
Ground water contamination is possible.
It is stable in intact plants.
It can move in run-off water after heavy rainfall events as it dissolves in water rather than attaching to soil particles.
Replanting intervals - 12 months for most species to 4 years for some species. Accumulation in milk and tissues has not been found.
28 REGISTERED CROPS:
See HerbiGuide Species Solution tab.
29 REGISTERED WEEDS:
See HerbiGuide Species Solution tab.
30 REGULATION AND LEGAL:
UN number: 3082
Hazchem code: 1X
NOHSC classification: Hazardous.
Dangerous goods class (ADG): Not classified as a dangerous good.