Benzofenap 300
1 Trade nameManufacturerForm
TAIPAN HERBICIDEBAYER CROPSCIENCE PTY LTDSC

2 PRICE:

$58.41/L

3 ACTIVE INGREDIENTS: Benzofenap 300 g/L

4 CHEMICAL GROUP: H - Pyrazoles.

Bleachers: Inhibitors of 4-hydroxyphenol-pyruvate dioxygenase (HPPDs)

5 RELATED HERBICIDES:

BalanceIsoxaflutole 750 g/kg
Benzofenap 300Benzofenap 300g/L

6 GENERAL DESCRIPTION:

Benzofenap is a translocated, selective, root and shoot absorbed herbicide used mainly for broad-leaved water weed control in Rice.

7 APPLICATION METHODS AND TIPS:

Fixed wing Aerial application

Apply as course droplets with a Bickley boom on aircraft in 20 L/ha water to water that is at least 10 cm deep.

Ground or helicopter application

Drip directly into the water using a SQWIIRT rig applying a minimum of 5 L/ha water as the carrier.

10 WATER QUALITY:

Hard water

Colloids

pH

11 COMPATIBILITY:

Not compatible with strong acids or alkalis.

Trace elements.

12 EQUIPMENT:

Bickley boom for aerial application.

SQWIIRT rig for ground or helicopter application.

14 HERBICIDE RESISTANCE:

None reported.


15 REPLANTING INTERVALS:

CropTime
Barley12 weeks
Canola12 weeks
Clover: Subterranean12 weeks
Wheat12 weeks

16 WITHHOLDING PERIODS:

CropTypeTime
AllHarvest 
AllGrazing 

17 RE-ENTRY PERIOD:

18 PROTECTIVE CLOTHING:

19 SOIL:

20 MODE OF ACTION:

Herbicide group F. Inhibits carotenoid synthesis. Plants turn white due to lack of carotene pigments.

Uptake and translocation:

Absorbed by roots and leaves.

Physiological effects:

Residual Life and Breakdown:

Selectivity:

Controls some broad-leaved plants with little action on grasses.

23 PLANT SYMPTOMS:

Bleaching of leaves and white blotches.

SECONDARY EFFECTS:

24 TOXICITY:

Low mammalian toxicity.

Summary:

Details:

Poison schedule - S5.

Mammalian toxicity - Low.

Acute oral LD50 - >15,000 mg/kg (rats), [For comparison table salt is 3000 mg/kg]

Acute dermal LD50 - >5000 mg/kg (rabbit).

Skin - Slightly irritating. May irritate skin. Weak skin sensitiser.

Eye - Slightly irritating. May irritate eyes.

Vapour inhalation - LC50 - >1.93 mg/L air (4 hour, rat). Low toxicity.

Chronic oral toxicity NOEL - ppm for two years.

Not carcinogenic, mutagenic or teratogenic (i.e. does not cause cancer or reproductive problems in animal studies).

Acceptable Daily Intake (ADI) -

Other Species -

Dangerous to fish

Birds - low toxicity. LD50 >5200 (Bobwhite Quail); >2000 mg/kg (Mallard Duck)

Fish - high toxicity LC50(48hr) >10 mg/L.

Invertebrates - moderate toxicity. LC50 >10 mg/L (Daphnia).

Bees - toxicity.

25 TOXICITY SYMPTOMS:

26 FIRST AID:

If SWALLOWED - Wash mouth out with water. Do not induce vomiting. Seek medical attention if a large amount has been ingested. May be harmful if a large amount has been swallowed.

If in EYES - Irrigate with plenty of water.

If on SKIN - Rinse with plenty of water, remove contaminated clothing, wash with soap and water.

If INHALED - Remove patient to fresh air.

See a doctor if worried.

Advice to doctor - Treat symptomatically. No specific antidote.

27 ENVIRONMENTAL FATE:

Half life in soil - 38 days.

Half life in water - days at pH5 and 35 C.

It has an EPA classification for soil mobility that ranges from

Ground water contamination - Low likelihood of leaching. Low likelihood of surface runoff.

Accumulation in milk and tissues.

pH stability - Stable pH<9.

Photolysis rate -

Hydrolysis half life -

Biodegradation rate -

30 REGULATION AND LEGAL:

UN number - Not applicable.

Dangerous goods class - Not classified as a dangerous good for transport by road or rail.

Hazchem code - Not applicable.

Proper shipping name - Not applicable.

Packaging group - Not applicable.

EPG - Not applicable.

CAS number - 82692-44-2

31 PROPERTIES:

Water solubility at 25 C. - 0.13 mg/L. Low solubility and forms a suspension.

Oil solubility -

Octanol:Water ratio at 25 C. - at pH 5; Strongly adsorbed

Vapour Pressure at 30 C. - 1.33 x 10-5 Pa

Dissociation constant - pKa

Melting point - C.

Boiling point - >100 C.

Molecular weight -

Half life in water - days at pH5 and 35 C.

Colour - Viscous cream suspension.

Odour - Negligible

Bulk density -

Specific gravity - 1.08 at 20 C

pH - 7.5-8.5.

Flammability - Non flammable.

Corrosivity - Non corrosive.

33 REFERENCES:


Field Crop Herbicide Information:

CHEM NAME

6. Product colour : Cream.

7. Product Flammability : Non flammable

9. Shelf Life :

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 :

16. Application Timing : After flooding in Rice.

17. Rate Variations : 2 L/ha.

18. Rates Selection :

19. Weeds Controlled : Some broad-leaved weeds

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 : Mesh size as suitable for nozzle being used.

30. Recommended Wetter

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 :
  1. 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.