Carfentrazone 400

1 Trade nameManufacturerForm
ARTILLERY HERBICIDEADAMA AUSTRALIA PTY LIMITEDWATER DISPERSIBLE GRANULE
ELEVATE HERBICIDEADAMA AUSTRALIA PTY LIMITEDEMULSIFIABLE CONCENTRATE
GENFARM CARFENTRAZONE 400 HERBICIDELANDMARK OPERATIONS LIMITEDEMULSIFIABLE CONCENTRATE
HAMMER 400EC HERBICIDEFMC AUSTRALASIA PTY LTDEMULSIFIABLE CONCENTRATE
Kenso Agcare Squatter 400 EC HerbicideKENSO CORPORATION (M) SDN. BHD.EMULSIFIABLE CONCENTRATE
NAIL 600EC HERBICIDECROP CARE AUSTRALASIA PTY LTDEMULSIFIABLE CONCENTRATE
Relyon Carpenter 400EC HerbicideRURALCO HOLDINGS LIMITEDEMULSIFIABLE CONCENTRATE

2 PRICE:

$269.5/kg
$269.5/L

3 ACTIVE INGREDIENTS: Carfentrazone-ethyl 400g/kg

4 CHEMICAL GROUP:G. Herbicide.

Aryl triazolinone sub group. Inhibitor of protoporphyrinogen oxidase

5 RELATED HERBICIDES:

BlazerAcifluorfen 224g/L
Carfentrazone 240Carfentrazone-ethyl 240g/L
Carfentrazone 400Carfentrazone-ethyl 400g/kg
FlumioxazinFlumioxazin 500g/kg
OxyfluorfenOxyfluorfen 240g/L (or 500g/L)
Saflufenacil 700Saflufenacil 700g/kg


6 GENERAL DESCRIPTION:

A contact, fast acting, poorly translocated, non residual herbicide for the control of broad-leaved weeds in cereals.

7 APPLICATION METHODS AND TIPS:

Good coverage is essential because this is mainly a contact herbicide.

Best results in fine weather on weeds with less than 8 leaves when the cereal has 3 or more leaves.

Use higher rate of herbicide and water on older and/or denser weed infestation

Don't mix with grass herbicides as unacceptable crop damage may occur. Apply grass herbicide first then Affinity 7-10 days later.

Don't mix with spraying oils as unacceptable crop damage may occur.

Generally used in combination with MCPA for broader spectrum weed control.

Don't mix with MCPA LVE or other ester formulations of pesticides because of increased damage to cereal crops.

Compatibility problems may occur at temperatures below 100C.

9 ADJUVANTS:

In most cases no adjuvant is needed.

A non ionic surfactant is suggested by the company under drier growing conditions but may cause increased crop effects. The maximum rate is 50 mL per 100 L of spray mix.

The use of spray oils may cause crop damage.

10 WATER QUALITY:

Hard water

Colloids

pH - breaks down quickly in alkaline water. Half life of 3.5 hours at 25 C and pH 9. It is unstable at pH>5.5.

Water that has a pH range of less than 5 or more than 8 should not be used.

Tank life: Around 10% loss over 1-2 days normally depending on temperature, pH and amount of light entering tank.

11 COMPATIBILITY:

Trace elements - Compatible with EDTA chelates of copper, manganese and Zinc.

14 HERBICIDE RESISTANCE:

None reported.

15 REPLANTING INTERVALS:

CropTime

16 WITHHOLDING PERIODS:

CropTypeTime
AllHarvest 
AllGrazing 

17 RE-ENTRY PERIOD:

18 PROTECTIVE CLOTHING:

19 SOIL:

20 MODE OF ACTION:

Uptake and translocation:

Contact. Rapidly absorbed through leaves. Little translocation, very limited movement in phloem.

Physiological effects:

Disrupts membranes by inhibition of protoporphyrinogen oxidase which is involved in chlorophyll production. This results in yellowing of the plant and the stopping of photosynthesis leading to death.

The herbicide requires light and oxygen for action and works mid range temperatures. It has slower activity at lower temperatures and often poorer weed control at high temperatures.

The herbicide is modified within susceptible plants to phytotoxic compounds.

Residual Life and Breakdown:

21 SELECTIVITY:

Controls broad-leaved weeds in grass crops. It has little action on grass plants

Crop tolerance:

Varietal sensitivities:

Effect on Clover Species:

Effect on Medic Species:

Effect on Lucerne:

Effect on Native Plants:

22 DISEASE AND INSECT EFFECTS:

23 PLANT SYMPTOMS:

Weeds

Tissue death occurs within a few hours to days of spraying. Symptoms develop more rapidly under warm, moist conditions. Under very dry conditions symptoms may be slower to develop.

Wild Radish that is beyond the 8 leaf stage at spraying tends to regrow.

Crop

Yellow to white spotting on cereal leaves present at the time of spraying often occurs. Occasionally leaf tip death may occur. Symptoms are greater when spraying occurs under high relative humidity, high temperature, high moisture, high soil moisture, high leaf moisture, dewy and high sunlight conditions. There has been no reported yield loss associated with these symptoms.

New growth has no symptoms.



Symptoms on Wild Radish 5 days after spraying with Affinity + MCPA.
Courtesy G. Cumming, Crop Care.



Typical spotting of cereal and symptoms on Wild Radish after spraying with Affinity + MCPA.
Courtesy G. Cumming, Crop Care.

SECONDARY EFFECTS:

24 TOXICITY:

Summary:

Details:

Mammalian toxicity - Low.

Acute oral LD50 - >5000 mg/kg (rats), [For comparison table salt is 3000 mg/kg]

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

Skin -

Eye - Irritant.

Vapour inhalation - LC50 - > 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).

Other Species -

Birds - Low toxicity. LD50 > 2250 mg/kg.

Fish - moderately toxic. LC50 1.6-2 ppm.

Invertebrates - slightly toxic. LC50 >9.8 ppm.

Bees - Low toxicity.

25 TOXICITY SYMPTOMS:

Overexposure to carfentrazone-ethyl shown by laboratory animals include decreased activity, tearing eyes, bleeding from the nose and incoordination.

26 FIRST AID:

Contact a doctor or Poisons Information Centre on 13 11 26.

If Swallowed - Contact a doctor.

If on Skin - Wash skin thoroughly with soap and water.

If in Eyes - Flush with water for 15 minutes.

If Inhaled - Remove patient from contaminated area to fresh air.

27 ENVIRONMENTAL FATE:

It has a half life in soil of less than 1.5 days.

It has a half life in water exposed to sunlight of 8.5 days.

It has an EPA classification for soil mobility that ranges from

Ground water contamination

Replanting intervals - short. No crop rotation restrictions.

Accumulation in milk and tissues.

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 - 8.5 days at pH5 and 35 C. At 25 C, >30 days at pH 5, 8.6 days at pH 7, 0.148 days at pH 9. At 20 C, >30 days at pH 5, 13.7 days at pH 7, 0.212 days at pH 9.

Thermal stability: Stable from -17 C to 150 C.

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.

Numbered Data

Affinity

4. Poison Schedule : 0

6. Product colour :

7. Product Flammability :

8. Dangerous Goods Class : Not classified as a dangerous good.

9. Shelf Life :

10. Mixtures Compatibility :

12. Effect of Soil Texture on Herbicide : None.

13. Effect of Soil pH on Herbicide : None.

14. Effect of Soil Organic Matter on Herbicide : None.

16. Application Timing : Early post emergence.

17. Rate Variations :

18. Rates Selection :

19. Weeds Controlled :

20. Effect on Crop : May cause leaf spotting.

21. Effect on Legume Species : Kills many legumes.

22. Soil Moisture at Application :

DRY - Use a wetter.

MOIST - Ideal.

WATERLOGGED - May cause crop leaf spotting.

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 : 50-100 L/ha

27. Nozzle Type : Flat fan. Flat Fan

28. Recommended Nozzle Pressure : 200 kPa

29. Recommended Filter Size : Mesh size as suitable for nozzle being used.

30. Recommended Wetter: Generally none. Under drier conditions a maximum of 50 mL/100L of a non ionic wetter.

31. Other Additives : None.

32. Rain Fastness : 1 hours. (4-6 hours if mixed with MCPA)

33. Time Interval Before Effect is Noticed : a few hours to a few days.

34. Weed Symptoms : necrosis.

35. Effect of Herbicide/Disease Interaction on Crop :

36. Withholding Period : 14 days.

37. Plant-Back Period : None specified.

38. Spray Tank Clean-Up : Drain tank and flush with clean water for a minimum of 10 minutes. Fill the tank with clean water and a boom cleaning agent.

Remove the nozzles and screens and clean separately.

39. Other Comments :
Numbered data adapted from "Crop Herbicide Information"
by A.J. Chambers.

Acknowledgments:

Collated by HerbiGuide. For more information see www.herbiguide.com.au or phone 08 98444064.