Bromacil is a translocated herbicide that is residual in to soil for many months to years and controls a range of grass and broadleaf weed species. It is absorbed mainly through the roots with some leaf absorption. Its main use is in citrus, pineapple and asparagus crops and for residual weed control in non crop areas. It has a long replanting interval and many plant species may be damaged up to 3 years after treatment.
7 APPLICATION METHODS AND TIPS:
Best results when applied to bare, trash and clod free soil and rain or irrigation occurs within 3-4 days of application.
Add a wetting agent if weeds up to 10 cm tall or wide are present.
Use lower rates on light soils with low clay and organic matter and higher rates on heavy soils with high clay and organic matter contents.
Do not cultivate after planting as reduced weed control and/or crop damage may occur.
Use 50 mesh or larger nozzle filters to reduce the risk of blockages. Keep well agitated.
10 WATER QUALITY:
Hard water
Colloids
pH
11 COMPATIBILITY:
Trace elements.
12 EQUIPMENT:
Boom spray - Manufacturer recommends 1000-2000 L/ha water for industrial and 250-450 L/ha water at 200-300 kPa for selective applications. Water rates down to 50 L/ha are adequate on good equipment.
Hand spraying - Manufacturer recommends 1000-2000 water L/ha at 60-800 kPa. Rates down to 200 L/ha are adequate if coverage is being achieved.
14 HERBICIDE RESISTANCE:
Some populations may become tolerant after multiple use of group C herbicides.
15 REPLANTING INTERVALS:
Crop
Time
All except Pineapple
3 years
16 WITHHOLDING PERIODS:
Crop
Type
Time
All
Harvest
Not required
All
Grazing
17 RE-ENTRY PERIOD:
18 PROTECTIVE CLOTHING:
19 SOIL:
19 SOIL:
Use lower rates on light soils with low clay and organic matter and higher rates on heavy soils with high clay and organic matter contents.
31 PROPERTIES:
20 MODE OF ACTION:
Inhibits photosynthesis at photosystem 2.
Uptake and translocation:
Root absorbed mainly with some leaf absorption.
Physiological effects:
Residual Life and Breakdown:
Selectivity:
23 PLANT SYMPTOMS:
SECONDARY EFFECTS:
24 TOXICITY:
Summary:
Slightly toxic, harmful if swallowed and may irritate eyes and skin.
Details:
Poison schedule - Unscheduled
Mammalian toxicity - Slightly toxic.
Acute oral LD50 - 2000 mg/kg (male rats), 1300 mg/kg (female rats) [For comparison table salt is 3000 mg/kg]. Harmful if swallowed.
Acute dermal LD50 - >5000 mg/kg (rabbit).
Skin - Slightly toxic. Moderate skin irritant. May cause a rash. Not a skin sensitiser.
Eye - Mild eye irritant.
Vapour inhalation - LC50 - >4.8 mg/L air (rat). Slightly toxic. Not classified as harmful by NOHSC.
Chronic oral toxicity NOEL - >1250 ppm for two years (Dogs).
Limited evidence of carcinogenic response in mice. Not mutagenic or teratogenic (i.e. does not cause reproductive problems).
Acceptable Daily Intake (ADI) -
Other Species -
Birds - toxicity.
Fish - toxicity LC50 >100 mg/L (Rainbow trout).
Invertebrates - toxicity.
Bees - toxicity.
25 TOXICITY SYMPTOMS:
Large ingested doses may cause incoordination, salivation, vomiting, weakness, lacrimation and dilated pupils.
Where skin has been exposed a temporary rash may occur.
Eye contact may result in irritation, tears and blurred vision.
26 FIRST AID:
If SWALLOWED - Wash mouth out with water. Never give anything by mouth to an unconscious person. Seek medical attention if any symptoms occur.
If in EYES - Irrigate with plenty of water. Seek medical attention if irritation occurs.
If on SKIN - Rinse with plenty of water, remove contaminated clothing, wash with soap and water.
If INHALED - Remove patient to fresh air. If not breathing give artificial respiration. If breathing is difficult give oxygen. See a doctor if symptoms occur.
Advice to doctor - Treat symptomatically.
18 PROTECTIVE CLOTHING:
27 ENVIRONMENTAL FATE:
Do not move soil from the treated area or off target damage may occur from herbicide residues.
It has a half life in soil of many months.
It has an EPA classification for soil mobility that ranges from
Ground water contamination
Replanting intervals - Do plant any crop apart from pineapples on the treated area for 3 years.
Accumulation in milk and tissues.
28 REGISTERED CROPS: (Button)
29 REGISTERED WEEDS: (Button)
30 REGULATION AND LEGAL:
UN number:
CAS numbers: 314-40-9
Hazchem code:
NOHSC classification:
Land transport:
Dangerous goods class:
Sea transport:
Proper shipping name:
Class:
Packaging group:
EPG:
R Phrases
R36/38 Irritating to eyes and skin.
R22 Harmful if swallowed.
31 PROPERTIES:
Water solubility at 25 C. - ppm at pH ;
Oil solubility -
Octanol:Water ratio at 25 C. - at pH 5;
Vapour Pressure at 25 C. -
Dissociation constant - pKa
Melting point - C.
Molecular weight -
Half life in water - days at pH5 and 35 C.
Odour - Odourless
Colour - Beige
Bulk density - 0.53 g/cm3
pH - 8.5-9.5
Flammability - May be ignited by heat or open flame. Keep away from heat sparks and flame. Decomposition doe not occur. Polymerisation does not occur. Not a fire or explosion hazard. Dust may form an explosive mixture with air.
33 REFERENCES:
Ashton, F.M. and Crafts, A.S. (1981) Mode of Action of Herbicides. (Wiley-Interscience publication).
Kearney, P.C. and Kaufman, D.D. (1976). Herbicides. Chemistry, degradation and mode of action. Vol 1 & 2.
MSDS (DuPont) 09/03/04
Field Crop Herbicide Information:
CHEM NAME
2. Concentration of Active Constituent : 800g/kg
Trade Name : Hyvar X
3. Formulation : Wettable powder.
4. Poison Schedule : Unscheduled.
6. Product colour : Beige
7. Product Flammability : May be ignited by heat or open flame. Keep away from heat sparks and flame. Decomposition doe not occur. Polymerisation does not occur. Not a fire or explosion hazard. Dust may form an explosive mixture with air.
8. Dangerous Goods Class : Not classified as a dangerous good.
9. Shelf Life : 3 years.
10. Mixtures Compatibility :
11. Registered Crop(s) :
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 photosystem 2.
16. Application Timing : Pre and early post emergence.
17. Rate Variations :
18. Rates Selection :
19. Weeds Controlled :
20. Effect on Crop :
21. Effect on Legume Species :
22. Soil Moisture at Application :
DRY -
MOIST -
WATERLOGGED -
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 :
27. Nozzle Type : Flat fan.
28. Recommended Nozzle Pressure :
29. Recommended Filter Size : 50 Mesh
30. Recommended Wetter; Non-ionic
31. Other Additives :
32. Rain Fastness : hours.
33. Time Interval Before Effect is Noticed :
34. Weed Symptoms :
35. Effect of Herbicide/Disease Interaction on Crop :
36. Withholding Period : 0 days.
37. Plant-Back Period : 3 years (except pineapples.
Spray Tank Clean-Up : Drain tank and flush with clean water for a minimum of 10 minutes. Fill the tank with clean water and flush for 15 minutes. Remove the nozzles and screens and clean separately.
39. Other Comments :
Acknowledgments:
Collated by HerbiGuide. For more information see www.herbiguide.com.au or phone 08 98444064.