Eclipse
| 1 Trade name | Manufacturer | Form |
| ECLIPSE 100 SC HERBICIDE | BAYER CROPSCIENCE PTY LTD | SUSPENSION CONCENTRATE |
3 ACTIVE INGREDIENTS:
Metosulam 714 g/kg as a water dispersible granule.
OR metosulam 100 g/L as a suspension concentrate.
4 CHEMICAL GROUP: B.
Sulfonylurea, triazolopyrimidine sulfonanilide group.
5 RELATED HERBICIDES:
| Bensulfuron | Bensulfuron 600g/kg |
| Broadstrike | Flumetsulam 800g/kg |
| Chlorsulfuron | Chlorsulfuron 750g/kg |
| Crusader | Pyroxsulam 30g/L + cloquintocet-mexyl 90g/L |
| Eclipse | Metosulam 100g/L |
| Eclipse | Metosulam 714g/kg |
| Ethoxysulfuron | Ethoxysulfuron 600g/kg |
| Express | Tribenuron methyl 750g/kg |
| Flame | Imazapic 240g/L |
| Harmony M | Metsulfuron 68g/kg + thifensulfuron-methyl 682g/kg |
| Imazapic plus Imazapyr | Imazapic 525 + Imazapyr 175g/L |
| Imazapyr | Imazapyr 250g/L or 750g/kg |
| Intervix | Imazamox 33g/L + imazapyr 15g/L |
| Iodosulfuron 100 | Iodosulfuron 100g/kg |
| Iodosulfuron plus mefenpyr | Iodosulfuron 100g/L + mefenpyr |
| Lightning | Imazapyr 175g/L + imazethapyr 525g/L |
| Logran 750 | Triasulfuron 750g/kg |
| Mesosulfuron 30 | Mesosulfuron 30g/L |
| Metsulfuron-methyl | Metsulfuron 600g/kg |
| Muster | Ethametsulfuron-methyl 750g/kg |
| Raptor WG 700 | Imazamox 700 g/kg |
| Sempra | Halosulfuron 750g/kg |
| Spinnaker | Imazethapyr 700g/kg or 240g/L |
| Sulfometuron | Sulfometuron 750g/kg |
| Sulfosulfuron | Sulfosulfuron 750g/kg |
| Titus | Rimsulfuron 250g/kg |
| Trifloxysulfuron | Trifloxysulfuron 750g/kg |
6 GENERAL DESCRIPTION:
Metosulam is a foliar absorbed, selective and translocated herbicide for controlling broad leaf weeds in cereal and some grain legume crops.
It is of low toxicity to mammals, birds and fish. Metosulam acts on the ALS enzyme in plants which is not present in animals and this is the main reason for its low toxicity. It presents little hazard to the environment because it is used at low rates and degrades relatively quickly in most field situations. Plants resistant to metosulam are expected after repeated use.
7 APPLICATION METHODS AND TIPS:
Metosulam is usually mixed with 30-100 L water per hectare and broadcast through hydraulic nozzles.
Surfactants and spray oils usually increase weed control but may cause excessive crop damage in some crops and varieties or when mixed with other herbicides.
Young, actively growing weeds are most sensitive and crops most tolerant of metosulam. Under cold, wet or stressful conditions the weeds become more tolerant and the crop less tolerant of the herbicide.
Rain within a two hours of application may reduce the effectiveness. Most of the herbicide is washed off leaves by the first 4 mm of rain.
8 WEATHER:
Rainfast in 2 hours.
Frost effects:
Wind:
Inversions: Avoid application during low level inversions as excessive drift may occur.
Temperature:
Delta T and relative humidity: Avoid application when Delta T is greater than
9 ADJUVANTS:
Various depending on situation. Don't use adjuvants when spraying Lupins.
Wetting agents: Most non ionic wetting agents are suitable e.g. BS 1000.
Spray oils: Most agricultural spray oils are suitable e.g. Uptake, D C Tron
10 WATER QUALITY:
Hard water:
Salty water:
Colloids:
pH:
Tank life:
11 COMPATIBILITY:
Trace elements.
See HerbiGuide Compatibilities button.
12 EQUIPMENT:
Boom sprays:
Carrier volume: 50-100 L/ha
Nozzles: Flat fan.
Pressure: 150-400 kPa.
Droplet size: 150 to 300 micron VMD.
Aerial application:
Not recommended for aerial application.
Carrier volume: at least 30 L/ha and narrow runs as it is expected to strip.
13 SPRAYER DECONTAMINATION:
Clean Up:
Clean soon after spraying to reduce the risk of forming dried deposits that may be difficult to remove.
Remove filters and clean separately. Triple rinse with water or water plus 0.25% wetting agent and run through boom.
Decontamination:
Rinse with water and drain.
Quarter fill the tank with an alkali detergent (e.g. 500 mL or g of Drive, Dynamo, Omo, or Surf per 100 L water) and circulate for at least 15 minutes then run through boom. Rinse with water. Remove filters and clean separately. Replace them and rinse the whole system with water again.
14 HERBICIDE RESISTANCE:
Broadleaf plant populations tolerant to metosulam are expected to occur after repeated use.
Although metosulam is a sulfonylurea herbicide (Group B) it is not expected to cause increased herbicide tolerance in annual ryegrass. This is because it has little action on annual ryegrass and therefore does not cause selection for tolerant individuals.
15 REPLANTING INTERVALS:
| Crop | Time |
| Barley | 0 days |
| Beans | 9 months |
| Brassica crops | 9 months |
| Canola | 9 months |
| Cereal Rye | 0 days |
| Clover | 9 months |
| Lucerne | 9 months |
| Lupins | 9 months |
| Medics | 9 months |
| Oats | 0 days |
| Peas | 9 months |
| Triticale | 0 days |
| Wheat | 0 days |
16 WITHHOLDING PERIODS:
| Crop | Type | Time |
| Cereals | Harvest | Not required |
| Cereals | Grazing | 14 days |
| Lupins | Harvest | Not required |
| Lupins | Grazing | 28 days |
17 RE-ENTRY PERIOD:
18 PROTECTIVE CLOTHING:
Overalls, boots and washable hat. Use gloves and face shield when handling the concentrate. Half face piece respirator for liquid concentrate.
19 SOIL:
Soil texture: little effect.
Soil pH: little effect.
Soil organic matter: little effect.
Soil moisture at application: little direct effect providing sufficient moisture for active plant growth. Poor control may occur under waterlogged conditions due to plant stress.
20 MODE OF ACTION:
Inhibits the ALS (acetolactate synthase) enzyme.
Uptake and translocation:
Most of the metosulam applied to leaves is absorbed.
Physiological effects:
Within the plant, metosulam stops cell division very quickly by its action on the ALS enzyme. Secondary effects on photosynthesis, respiration and ethylene production produce the symptoms of yellowing, reddening and leaf drop.
Residual Life and Breakdown:
21 SELECTIVITY:
Species tolerant to metosulam degrade it more quickly than do sensitive plants. Degradation products are non toxic and herbicidally inactive. Herbicide resistance appears to be due to plants with a less sensitive ALS enzyme.
It does not normally affect seed germination.
Crop tolerance:
Temporary yellowing and height reduction may occur.
Varietal sensitivities:
Wheat - Cadoux, Datatine, Goldmark, H45 and Silverstar appear sensitive.
Lupins - Yellow lupins (Lupinus luteus) e.g. Wodjil are damaged by metosulam.
Effect on Clover Species:
Damages clover.
Effect on Medic Species:
Damages medics.
Effect on Lucerne:
Damages lucerne.
Effect on Native Plants:
Many native plants that are not in the Brassicaceae family will tolerate metosulam.
22 DISEASE AND INSECT EFFECTS:
Brown leaf spot and insect damage may make lupins more susceptible to damage.
23 PLANT SYMPTOMS:
Growth stops soon after application. About a week later plants will start to yellow or redden. In broad-leaved weeds this may be an intervenal yellowing. Annual weeds are usually dead within 4 weeks of spraying. Under cold and wet conditions they may remain alive as severely stunted plants.
Metosulam has little effect on germination.
SECONDARY EFFECTS:
Metosulam does not affect the microbes associated with N fixation in legumes.
It is very toxic to blue green algae.
24 TOXICITY:
Summary:
Low toxicity to mammals, birds, fish and bees. Toxic to algae and harmful to aquatic invertebrates. Avoid inhaling mist and liquid concentrate. Liquid products may contain formulating agents that could be harmful if inhaled.
Details:
Poison schedule: S6.
Mammalian toxicity: Low.
Acute oral LD50: >5000 mg/kg (rat and mouse), [For comparison table salt is 3000 mg/kg]
Acute dermal LD50: >2000 mg/kg (rabbit).
Skin: Not irritating. Non sensitising.
Eye: slightly irritating.
Vapour inhalation: LC50 >1.9 mg/L air (rat) to >4.08 mg/L aerosol for 4 hours.
Chronic oral toxicity: NOEL <100 mg/kg/day for lifetime exposure. High dose levels causes kidney toxicity rats and dogs. An increase in kidney tumours has been noted in rats fed high levels at 100 mg/kg/day over extended periods. Metosulam has been shown to be carcinogenic in a feeding study in rats. Severe effects on the retina and loss of sight occurred in dogs after repeated administration. Danger of serious damage to health by prolonged exposure if swallowed.
Not mutagenic or teratogenic in animal studies (i.e. does not cause cancer or reproductive problems in animal tests).
Acceptable Daily Intake (ADI):
Other Species:
Birds: low toxicity. LD50 Bobwhite quail >2250 mg/kg. Mallard duck >2000 mg/kg.
Fish: low toxicity LC50(96 hour) >800 mg/L for Rainbow trout.
Invertebrates: moderate toxicity. EC50 (48 hour) Daphnia magna 64 mg/L.
Bees: low toxicity.
Arthropods: toxicity.
Earthworms:
Algae: highly toxic to Blue green and green algae (Desmodesmus subspicatus) EC50 (24-48 hour) 1.9 mg/L.
Aquatic plants: Highly toxic. EC50 (7 day) 0.00085 mg/L for Duckweed (Lemna gibba).
Accumulation:
25 TOXICITY SYMPTOMS:
Metosulam does not usually evoke any symptoms in animals under normal exposures.
The main enzyme (ALS) that is attacked in plants does not occur in animals.
26 FIRST AID:
If SWALLOWED: Wash out mouth with water. Do NOT induce vomiting. Give a glass of water. 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. If breathing stops or shows signs of failing then apply artificial respiration.
Advice to doctor: Treat symptomatically. There is no specific antidote. Gastric lavage is not normally required. If more than a mouthful has been ingested, administer activated charcoal or sodium sulphate.
Contact the Poisons Information Centre on 131126.
27 ENVIRONMENTAL FATE:
Metosulam has a half life in soil of 6-47 days. It is degraded by microbial action. The half life is lowest when microbial activity is highest.
DT50 = 6 days in 4 soils at 200C and 25 days in the top 10 cm of field soils.
It does not accumulate in animal systems.
Little is naturally degraded due to exposure to sunlight and volatilisation.
It does not hydrolyse.
Metosulam may leach in very sandy soils. Residues are normally confined to the top 100 mm of soil.
Half life in water - It degrades slowly with an aerobic half life of 84 days and an anaerobic half life of 90 days.
28 REGISTERED CROPS:
See HerbiGuide Species Solution tab.
29 REGISTERED WEEDS:
See HerbiGuide Species Solution tab.
30 REGULATION AND LEGAL:
UN number: UN 3082.
CAS numbers: 139528-85-1 Metosulam. 57-55-6 Propane-1,2-diol.
OPP Chemical Code:
Hazchem code: 3Z.
NOHSC classification: Hazardous.
Land transport:
Dangerous goods class (ADG): According to AU01, Environmentally Hazardous Substances in packagings, IBCs or any other receptacle not exceeding 500 kg or 500 L are not subject to the ADG Code
Sea transport:
Proper shipping name: ENVIRONMENTALLY HAZARDOUS SUBSTANCE, LIQUID, N.O.S (contains metosulam)
International Maritime Dangerous Goods Code (IMDG):
Class: 9
Packaging group: III
EPG:
Marine pollutant.
Risk phrases:
R23 - Toxic by inhalation
R40 - Limited evidence of a carcinogenic effect.
R48/22 - Harmful: danger of serious damage to health by prolonged exposure if swallowed.
Safety phrases:
31 PROPERTIES:
Colour: Cream/brown granules or white to beige liquid.
Odour: Weak characteristic odour.
Form: Granules or liquid (suspension concentrate).
Chemical name:
Empirical formula:
IUPAC:
CAS: 139528-85-1
Water solubility: Disperses in water. mg/L at 25 C at pH
Oil solubility:
Octanol:Water ratio: LogPow = 2.46 at 20 0C at pH 7.
Soil organic carbon absorption coefficient (Koc): <500 in 9 soils.
Vapour Pressure: at 25 C very low.
Vapour density:
Dissociation constant: pKa
Melting point: C.
Boiling point: C.
Molecular weight:
Bulk density:
Specific gravity: 1.04 at 200C.
Viscosity: CPS.
pH: 5-8
Flammability: Non flammable.
Flashpoint: None.
Autoignition: 5050C.
Corrosivity:
Shelf Life: unlimited for granules. Liquid is expected to be less.
(When Stored under Ideal Conditions)
Stable under normal conditions.
32 SPILLS:
Absorb spill with earth, sand, clay or absorbent material such as vermiculite.
Ventilate area after cleanup.
33 FIRE:
Extinguish with water spray, foam, carbon dioxide or dry agent.
Toxic fumes may be released in fire. Wear breathing apparatus or avoid smoke.
34 COMMENTS:
Poorer results noted when sprayed under overcast conditions and 40 points of rain on the following day compared to that sprayed 1 day before in fine sunny weather at Hyden 1995.
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.
Bayer Eclipse 100 SC MSDS May 2009.
Bayer Eclipse 100 SC Label May 2009.
Acknowledgments:
Collated by HerbiGuide. For more information see www.herbiguide.com.au or phone 08 98444064.