3 ACTIVE INGREDIENTS: MCPA 500 g/L as the ethyl hexyl ester + Picolinafen 50 g/L
Formulation: Emulsifiable concentrate.
4 CHEMICAL GROUP: I, F. Phenoxy and aryloxypicolinamide groups
5 RELATED HERBICIDES:
6 GENERAL DESCRIPTION:
An early post emergence herbicide for broad leaf weed control in cereals. It is mainly absorbed through the leaves but has some soil residual activity.
7 APPLICATION METHODS AND TIPS:
Apply to actively growing plants in fine weather with rain a day or two later.
Minimum of 50 L/ha water is recommended for boom spraying and 30 L/ha for aerial spraying. Increase water volumes in thick crops or for dense weed infestations.
Addition of oil or oil based products may cause unacceptable cereal crop damage.
10 WATER QUALITY:
Hard water
Colloids
pH
11 COMPATIBILITY:
Trace elements.
Petroleum based spraying oils such as Supercharge appear to be compatible with Paragon but may cause excessive crop yellowing.
Esterified seed oils and vegetable oils such as Kwickin, Hasten and Synertrol appear to be less or not compatible.
14 HERBICIDE RESISTANCE:
This product should have a low risk of creating resistant weed populations.
18 PROTECTIVE CLOTHING:
When handling concentrate wear a face shield or goggles, cotton overalls, washable hat and elbow length PVC gloves. Wash all these items every day.
17 RE-ENTRY PERIOD:
24 hours. Wear protective clothing if in contact with the crop before the spray has dried.
20 MODE OF ACTION:
MCPA component disrupts cell growth of plants and picolinafen component inhibits carotenoid synthesis.
Short residual life in soil but may control germinating weeds for a few weeks after spraying in good moist conditions. There is little useful residual activity under dry soil surface conditions.
Uptake and translocation:
Absorbed mainly through leaves with some root absorption.
Physiological effects:
Acts by inhibiting carotenoid (yellow pigment) synthesis and disrupts plant cell growth.
Residual Life and Breakdown:
Selectivity:
23 PLANT SYMPTOMS:
Bleaching, reddening and curling of the leaves a few days after application that progresses to death of the tissue.
SECONDARY EFFECTS:
24 TOXICITY:
Summary:
Details:
Poison schedule - S6
Mammalian toxicity -
Acute oral LD50 - >1768 mg/kg (rats) for the formulated product, [For comparison table salt is 3000 mg/kg]
Acute dermal LD50 - >4000 mg/kg (rat) for the formulated product.
Skin - Mild to moderate Irritant. Not a skin sensitiser.
Eye - Moderate irritant.
Vapour inhalation - LC50 - >5.18 mg/L air (rat).
Chronic oral toxicity NOEL - ppm for two years.
Not mutagenic or teratogenic (i.e. does not cause cancer or reproductive problems).
ADI - MCPA component is 0.01 mg/kg/day. Picolinafen component is 0.007 mg/kg/day.
NOEL - MCPA component is 1.1 mg/kg/day. Picolinafen component is 1.4 mg/kg/day.
Other Species -
Birds - Not toxic.
Fish - High toxicity LC50 - 0.281 mg/L (96 hr Rainbow trout) for picolinafen component. 3.2 mg/L (96 hr Rainbow trout) for MCPA component. The acute toxicity of the MCPA component is above its solubility in water
Invertebrates - Moderate toxicity. LC50 (48 hr Daphnia) for picolinafen component is 0.612 mg/L. LC50 (48 hr Daphnia) for MCPA component is >190 mg/L.
Bees - Not toxic.
Algae - Toxic to algae.
25 TOXICITY SYMPTOMS:
Inhalation may cause headaches, dizziness and possibly nausea.
Ingestion of large amounts can cause headaches, nausea, lethargy, motor weakness and incoordination.
Prolonged exposure on the skin may cause defatting and dermatitis.
Irritates eyes.
Regular exposure may cause liver and kidney effects.
26 FIRST AID:
If swallowed - Do NOT induce vomiting. If patient vomits then prevent vomit from entering lungs by laying patient on their side with the mouth down. Do not give anything by mouth to an unconscious or semiconscious patient. If large amounts (more than a tablespoon) have been ingested consider inducing vomiting based on medical advice.
If in eyes - Wash out immediately with water. Seek medical advice if irritation develops or persists.
If on skin - Wash immediately with soap and water. Remove contaminated clothing. If irritation persists then seek medical advice.
Contact a doctor or Poison Information Centre on 131126.
Advice to doctor - Treat symptomatically. If vomiting occurs the solvents may cause pulmonary pneumonitis.
27 ENVIRONMENTAL FATE:
It has a half life in soil of a few weeks.
It has an EPA classification for soil mobility that ranges from
Ground water contamination
Replanting intervals
Accumulation in milk and tissues.
31 PROPERTIES:
Colour - Brown liquid.
Odour - Slightly aromatic.
Water solubility at 25 C. - Forms and emulsion in water.
Oil solubility -
Octanol:Water ratio at 25 C. - at pH 5;
Vapour Pressure at 25 C. - Volatile component is <8%.
Dissociation constant - pKa
Melting point - C.
Molecular weight -
Flashpoint - >105 degrees C. Ignition temperature - 260 degrees C. C1 Combustible liquid. Non flammable.
Stability - Stable under normal conditions.
Polymerisation - Hazardous polymerisation is not possible.
Half life in water - days at pH5 and 35 C.
Specific Gravity - 1.02-1.08.
pH - 3 to 5.
Keep away from strong oxidizing agents. Violent reactions with strong oxidizing agents are possible.
33 REFERENCES:
4. Poison Schedule : 6
6. Product colour :
7. Product Flammability :
8. Dangerous Goods Class :
9. Shelf Life :
10. Mixtures Compatibility :
11. Registered Crop(s) : Cereals
12. Effect of Soil Texture on Herbicide :
13. Effect of Soil pH on Herbicide :
14. Effect of Soil Organic Matter on Herbicide :
15. Mode of Action : Inhibits carotenoid synthesis and disrupts cell growth.
16. Application Timing : Early post emergence.
17. Rate Variations :
18. Rates Selection :
19. Weeds Controlled :
20. Effect on Crop : Transient yellowing is common. New growth should be normal.
21. Effect on Legume Species :
22. Soil Moisture at Application :
DRY - Poor residual control of weeds emerging after spraying.
MOIST - Ideal.
WATERLOGGED - May cause increased crop symptoms and damage.
23. Frost Effects :
24. Frost Free Days Required After Application :
25. Effect of Application Water Quality on Herbicide :
Saline Water -
Soil Colloids -
26. Recommended Water Volume : A minimum of 50 L/ha for ground application and 30 L/ha for aerial application. Increase water volumes in dense infestations of weeds.
27. Nozzle Type : Flat fan. 11001 to 11002.
28. Recommended Nozzle Pressure : 200 to 450 kPa
29. Recommended Filter Size : Mesh size as suitable for nozzle being used.
30. Recommended Wetter -
31. Other Additives : Don't use spray oils or unacceptable crop damage may occur.
32. Rain Fastness : 4 hours.
33. Time Interval Before Effect is Noticed : 7-10 days.
34. Weed Symptoms : Bleaching and curling of leaves.
35. Effect of Herbicide/Disease Interaction on Crop : Diseased crops are more likely to be damaged by herbicide and yellowing will be more pronounced.
36. Withholding Period : 42 days grazing.
37. Plant-Back Period :
Spray Tank Clean-Up : Drain tank and flush with clean water for a minimum of 10 minutes. Fill the tank with clean water and detergent or sprayer cleaning agent or 1% solution of ammonia.
Remove the nozzles and screens and clean separately.
39. Other Comments :
Numbered data adapted from "Crop Herbicide Information"
courtesy of A.J. Chambers, Vic. Dept of Food & Agric.
Acknowledgments:
Collated by HerbiGuide. For more information see www.herbiguide.com.au or phone 08 98444064.