Oryzalin plus Oxyfluorfen

1 Trade nameManufacturerForm
CROP CULTURE TOUR ORNAMENTAL HERBICIDECROP CULTURE PTY LTDGRANULAR FORMULATION
MACSPRED DISMISS ORNAMENTAL HERBICIDEMACSPRED PTY. LTD.GRANULAR FORMULATION
ROUT ORNAMENTAL HERBICIDEEVERRIS AUSTRALIA PTY LTDGRANULAR FORMULATION
VAULT HERBICIDEAMGROW PTY LTDGRANULAR FORMULATION

2 PRICE:

$26.6/kg

3 ACTIVE INGREDIENTS: Oryzalin 10g/kg + Oxyfluorfen 20g/kg

4 CHEMICAL GROUP: D,G

5 RELATED HERBICIDES:

BlazerAcifluorfen 224g/L
Carfentrazone 240Carfentrazone-ethyl 240g/L
Carfentrazone 400Carfentrazone-ethyl 400g/kg
ChlorthalChlorthal 750g/kg
FlumioxazinFlumioxazin 500g/kg
Oryzalin plus trifluralinOryzalin 125g/L + Trifluralin 125g/L
OxyfluorfenOxyfluorfen 240g/L (or 500g/L)
PendimethalinPendimethalin 330, 400, 440 or 455g/L
ProdiamineProdiamine 480g/L
Propyzamide 500Propyzamide 500g/kg or L
Saflufenacil 700Saflufenacil 700g/kg
SurflanOryzalin 500 g/L
Trifluralin 480Trifluralin 480-500g/L

6 GENERAL DESCRIPTION:

A pre-emergence, root absorbed, residual herbicide applied as granules to pots or the ground. It is used mainly for ornamentals.

7 APPLICATION METHODS AND TIPS:

Best results when applied to bare moist soil and light rain or irrigation occurs soon after application.

Sprinkle granules evenly over the area. Don't mix into soil mechanically.

Don't apply to desirable plants with wet foliage or damage may occur.

Don't apply 2weeks before or after bud break or during periods of flush growth.

Don't apply directly onto bare roots of desirable plants.

Ensure granules are not trapped by foliage of desirable plants. Wash off with water if necessary.

8 WEATHER:

Rainfast immediately.

Frost effects: No significant effect.

Wind: High winds may make even applications difficult.

Inversions: Little effect.

Temperature: Little effect.

Delta T and relative humidity: Little effect.

9 ADJUVANTS:

Wetting agents: Not required.

Spray oils: Not required.

10 WATER QUALITY:

Hard water: No effect.

Salty water: Little effect.

Colloids: No effect.

pH: Little effect.

Tank life: Not mixed with water.

11 COMPATIBILITY:

Trace elements.

See HerbiGuide Compatibilities button.

12 EQUIPMENT:

Boom sprays:

Carrier volume: Not applicable.

Nozzles: Not applicable.

Pressure: Not applicable.

Droplet size: Not applicable.

Aerial application:

Carrier volume: Not applicable.

13 SPRAYER DECONTAMINATION:

Clean up:

Clean equipment soon after application to reduce the risk of forming dried deposits that may be difficult to remove.

Blow out granule applicators with compressed air.

Rinse containers with soapy water (e.g. 500 mL or g of Drive, Dynamo, Omo or Surf per 100 L water) or water plus 0.25% wetting agent.

Decontamination:

Rinse equipment 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.

Flush with clean water for a minimum of 10 minutes to remove all traces of liquid fertilisers or adjuvants containing ammonia, such as ammonium sulphate or ammonium nitrate, before adding chlorine bleach, because bleach and ammonia will react to release a toxic gas.

Soak equipment in a mixture of 500 mL chlorine bleach (4%) per 10 L water for at least 30 minutes then triple rinse with water.

14 HERBICIDE RESISTANCE:

Tolerant plants are expected to occur and may dominate the weed population after repeated applications.

15 REPLANTING INTERVALS:

CropTime
Sensitive plants12 months.

16 WITHHOLDING PERIODS:

CropTypeTime
AllGrazingDo not graze treated area
AllHarvest 

Do not apply to pots within 2 weeks of retail sale.

17 RE-ENTRY PERIOD:

Not required.

18 PROTECTIVE CLOTHING:

Overalls, boots and washable hat. Use gloves if spreading granules by hand.

19 SOIL:

Soil texture:

Soil pH:

Soil organic matter: Little effect.

Soil moisture at application: Best on moist soil.

20 MODE OF ACTION:

The oryzalin component inhibits tubulin formation and oxyfluorfen component inhibits protoporphyrinogen oxidase.

Uptake and translocation:

Mainly root absorbed when applied as granules.

Physiological effects:

Residual Life and Breakdown:

Provides about 3 months of weed control.

21 SELECTIVITY:

Crop tolerance:

Most established plants are tolerant.

The following plants are tolerant;

Abelia x grandiflora 'Francis Mason' (Glossy abelia), Acacia acinacea, Acacia baileyana (Cootamundra wattle), Acer palmatum (Japanese maple), Alnus acuminata, Arbutus unedo (Strawberry tree), Azalea indica, Betula pendula (Birch), Bougainvillea spp., Buxus microphylla v. japonica (Japanese box), Callistemon viminalis 'Captain Cook' (Bottlebrush), Camellia japonica, Cassia bicapsularis, Cassia corymbosa, Casuarina littoralis, Casuarina torulosa, Choisya ternata (Mexican orange), Coleonema album, Cotoneaster spp., Cupressus sempervirens v. (Swanes golden pencil pine), Diosma ericoides,

Eriostemon myoporoides, Eucalyptus nicholii (Fine leaf peppermint), Eucalyptus sideroxylon (Pink iron bark), Euonymus alata, Ficus benjamina, Fraxinus excelsior (Golden ash), Fraxinus pennsylvanica (Red ash), Gardenia jasminoides, Gardenia magnifica, Gelsemium sempervirens (Carolina jasmine), Gordonia axillaris, Grevillea 'Clearview David', Grevillea arenaria, Grevillea robusta (Silky oak), Grevillea 'Poorinda', Hakea laurina, Hakea saligna, Hebe buxifolia, Hibiscus spp., Iberis sempervirens, Ilex vomitoria, Jasminum nitidum, Juniperus chinensis, Juniperus conferta, Juniperus sabina, Juniperus squamata, Lagerstroemia indica, Lantana montevidensis, Leptospermum juniperinum 'Horizontalis', Leptospermum petersonii, Ligustrum japonicum, Ligustrum lucidum, Ligustrum sinense, Melaleuca armillaris, Melaleuca decussata, Melia azedarach, Murraya exotica (Orange jasmine), Nandina domestica 'Nana' (Dwarf Nandina), Nerium oleander (Oleander), Photinia robusta, Picea abies (Norway spruce), Picea glauca (Dwarf Alberta spruce), Pinus elliottii (Slash pine), Pinus radiata, Pinus strobus, Pinus thunbergii, Pittosporum crassifolium, Pittosporum tenuifolium, Pittosporum tobira, Podocarpus gracilior, Prunus spp.

(Weeping cherry), Punica granatum (Pomegranate), Rhaphiolepis indica, Rhododendron spp. (Azalea), Rosa spp. (Rose), Rosmarinus officinalis ('Blue lagoon' rosemary), Schefflera arboricola, Syringa spp. (Lilac), Thuja occidentalis, Ulmus campestris 'Variegata' (Silver elm), Ulmus procera (English elm), Viburnum

plicatum, Weigela spp., Westringia fruticosa.



The following plants may be damaged;

Aesculus pavia, Alnus glutinosa (Common alder), Azalea japonica, Cortaderia selloana (pampas), Corynocarpus laevigatus (Karaka), Dietes bicolor, Euonymus fortunei, Euonymus japonicus, Euryops pectinatus, Ficus pumila (Creeping fig), Hardenbergia spp., Ilex crenata, Ilex cornuta, Nandina domestica pygmaea, Phoenix spp., Potentilla fruticosa, Salvia farinacea, Trachelospermum asiaticum, Wisteria sinensis.

Varietal sensitivities:

Effect on Clover Species:

Little effect on established plants.

Effect on Medic Species:

Little effect on established plants.

Effect on Lucerne:

Little effect on established plants.

Effect on Native Plants:

Little effect on established plants.

22 DISEASE AND INSECT EFFECTS:

Not expected to be significant.

23 PLANT SYMPTOMS:

Death soon after germination. Stunted root system.

SECONDARY EFFECTS:

24 TOXICITY:

Summary:

Low toxicity to animals and birds. Toxic to fish and many aquatic organisms.

Details:

SUSMP classification (Poison schedule): Unscheduled

Mammalian toxicity: Low.

Acute oral LD50: oxyfluorfen >5000 mg/kg (rat),

oryzalin Rat = > 5000 mg/kg, Dog and cat = >1000 mg/kg

[For comparison table salt is 3000 mg/kg]

Acute dermal LD50: oxyfluorfen >3000 mg/kg (rabbit)

oryzalin >2000 mg/kg (rabbit).

Skin: Slightly irritating

Eye: Slightly irritating.

Vapour inhalation: LC50 oxyfluorfen >5.4 mg/L air (rat).

oryzalin >3 mg/L air (rat)

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

When oryzalin was fed to rats in doses as high as 135 mg/kg/day for 2 years,

there was an increase in the incidence of thyroid, mammary and skin tumours.

Thyroid tumours and benign skin and mammary tumours occurred in rats fed a

dietary level of 45 mg/kg/day for 2 years. However there were no tumours in

mice fed doses as high as 548 mg/kg/day for 2 years. Because of these

conflicting results, it is not possible to assess the carcinogenicity of oryzalin.

Oryzalin has shown systemic effects on the thyroid, liver and kidneys, as well as

blood chemistry, in animal tests.

Chronic oral toxicity: NOEL mg/kg for two years.

Oryzalin Chronic toxicity: Rats fed a dietary level of about 2.5 mg/kg/day for 2 years exhibited blood changes, increased liver and kidney weights, inhibition of growth and decreased survival. Repeated ingestion of large doses led to adverse changes in blood cell formation in dogs. Mice given dietary doses of about 200 mg/kg/day for 1 year exhibited decreased uterine and ovarian weights. Those exposed to doses of 75 mg/kg/day showed no observable effects.

Oryzalin is moderately well-absorbed from the gastrointestinal tract, and rapidly

metabolized and eliminated following absorption. When oryzalin was

administered to male rats, 40% of the dose was excreted in the urine and 40% in

the faeces within 3 days. Similar results were obtained in tests with rabbits, a

steer and with Rhesus monkeys.

Acceptable Daily Intake (ADI):

Other Species:

Oxyfluorfen

Birds: Low toxicity. Oryzalin LD50 >1000 mg/kg (chicken)

Fish: High toxicity

Acute LC50 (Rainbow trout Oncorhynchus mykiss) = 0.41 mg/L

Acute LC50 (Channel catfish Ictalurus punctatus) = 0.4 mg/L

Acute LC50 (Bluegill Lepomis macrochirus) = 0.2 mg/L

Invertebrates: toxicity. Daphnia Toxicity: EC50 (48 h) = 0.07 mg/L

Bees: toxicity.

Arthropods: toxicity.

Earthworms: Low toxicity. LC50 (Eisenia foetida) > 1000 mg/kg

Algae:

Accumulation:



Oryzalin

Birds: Low toxicity. Oryzalin LD50 >1000 mg/kg (chicken)

Fish: Moderate toxicity

Acute LC50 (Bluegill Lepomis macrochirus) = 2.88 mg/L

Invertebrates: toxicity.

Bees: toxicity.

Arthropods: toxicity.

Earthworms: Low toxicity. LC50 (Eisenia foetida) > 1000 mg/kg

Algae:

Accumulation:

25 TOXICITY SYMPTOMS:

26 FIRST AID:

If SWALLOWED: Wash out mouth with water. Do NOT induce vomiting. Do NOT give anything by mouth to a semiconscious or unconscious patient.

If in EYES: Hold eyelids open and wash eyes with plenty of water for 5 minutes, remove contact lenses if present and wash for a further 10 minutes. See a doctor if symptoms persist.

If on SKIN: Remove contaminated clothing. Wash skin thoroughly with soap and water.

If INHALED: Remove patient to fresh air. See a doctor if symptoms persist.

Advice to doctor: Treat symptomatically.

Contact the Poisons Information Centre on 131126.

27 ENVIRONMENTAL FATE:

Half life in soil: Weeks to months. 20-30 days. Oxyfluorfen has minimal microbial degradation. Oryzalin has microbial degradation.

Half life in water: Oxyfluorfen 5 days at pH5 and 35 C.

It has an EPA classification for soil mobility that ranges from

Oxyfluorfen is tightly bound to soil and nearly insoluble in water.

Oryzalin is tightly bound to soil

It has a leaching index of . (for comparison, trifluralin is 0-1 and chlorsulfuron is 25-30).

Ground water contamination: Not likely.

Accumulation in milk and tissues:

pH stability:

Photolysis rate: Oryzalin photodecomposition is rapid in water.

Hydrolysis half life: Oryzalin is not hydrolysed.

Biodegradation rate: Oxyfluorfen - Biodegradation under aerobic laboratory conditions is below detectable limits. (BOD20 or BOD28 is < 2.5%).

Biodegradation reached in Closed Bottle Test (OECD Test No. 301D) after 28

days is 1.2%.

Biodegradation rate: Oryzalin

No breakdown of oryzalin by hydrolysis was observed at pH 5, 7 and 9. Based on its behaviour in soil, breakdown by microbial processes is probably slow in the

aquatic environment due to low levels of oxygen and low microbial activity.

Photo-degradation may be significant in the upper portions of the water column.

Breakdown in vegetation: Oryzalin is readily absorbed via the roots, and plant metabolism of oryzalin is minimal.

Bioconcentration factor (BCF):

28 REGISTERED CROPS:

See HerbiGuide Species Solution tab.

29 REGISTERED WEEDS:

See HerbiGuide Species Solution tab.

30 REGULATION AND LEGAL:

UN number:
CAS numbers: Oryzalin 19044-88-3
Oxyfluorfen 42874-03-3
OPP Chemical Code:

Hazchem code:

NOHSC classification: Not hazardous.

Land transport: ADG

Dangerous goods class (ADG): Not a dangerous good.

Sea transport: IMDG

Proper shipping name:

International Maritime Dangerous Goods Code (IMDG):

Class:

Packaging group:

EPG:

Air transport: IATA/ICAO



Risk phrases: None assigned

Safety phrases: None assigned

31 PROPERTIES:

Colour: Brown and or yellow granules

Odour: Naphthalene like.

Form: Granules.

Chemical name:

Empirical formula:

IUPAC:

CAS:
Oryzalin 19044-88-3
Oxyfluorfen 42874-03-3
Water solubility: Oxyfluorfen almost insoluble. Oryzalin 2.5 ppm at 25C

Oil solubility:

Octanol:Water ratio: LogPow = at 25 C at pH 5.

Soil organic carbon absorption coefficient (Koc):

Vapour Pressure: Oxyfluorfen 2 x 10-6; Oryzalin <1x10-7.

Vapour density:

Dissociation constant: pKa

Melting point: C.

Boiling point: Oxyfluorfen 65ºC -85ºC; Oryzalin 141ºC -142ºC.

Molecular weight:

Bulk density: 1.4.

Specific gravity:

Viscosity: CPS.

pH: 8.9 in 1% solution.

Flammability:

Flashpoint: C.

Autoignition: C.

Corrosivity:

Shelf Life: years.

(When Stored under Ideal Conditions)

32 SPILLS:

Sweep up spilled granules.

33 FIRE:

Extinguish with water spray, foam, carbon dioxide or dry agent. Avoid using large quantities of water.

Avoid smoke.

34 COMMENTS:

35 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.

Macspred (2011) Dismiss label and MSDS

Scotts (2007) Rout label and MSDS

Acknowledgments:

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