Metsulfuron-methyl

Metsulfuron-methyl

1 Trade name	Manufacturer	Form
4FARMERS METSULFURON METHYL 600 WETTABLE POWDER CEREAL HERBICIDE	4 FARMERS PTY LTD	WP
4FARMERS METSULFURON-METHYL 600 WG SELECTIVE HERBICIDE	4 FARMERS PTY LTD	WG
AC GRIMACE 600 WG HERBICIDE	AXICHEM PTY LTD	WG
ACCURATE 600 WG HERBICIDE	OSPRAY PTY LTD	WG
AGCHEM METSULFURON-METHYL 600 WETTABLE POWDER CEREAL HERBICIDE	IMTRADE AUSTRALIA PTY LTD	WP
APPARENT METSULFURON 600 WG HERBICIDE	APPARENT PTY. LTD.	WG
ARM METSULFURON HERBICIDE	PROTERRA PTY LTD	WP
AW MILITIA 600 WG HERBICIDE	AGRI WEST PTY LIMITED	WG
CHEMAG METSULFURON WG HERBICIDE	IMTRADE AUSTRALIA PTY LTD	WG
CHEMFORCE METSULFURON 600WG HERBICIDE	CHEMFORCE 2010 PTY LTD	WG
CONQUEST METSULFURON 600 WG HERBICIDE	CONQUEST CROP PROTECTION PTY LTD	WG
DOW AGROSCIENCES METSULFURON HERBICIDE	DOW AGROSCIENCES AUSTRALIA LIMITED	WG
DUPONT ALLY HERBICIDE	DU PONT (AUSTRALIA) LTD	DF
DUPONT BRUSH-OFF BRUSH CONTROLLER	DU PONT (AUSTRALIA) LTD	GR
ECHEM METSULFURON-METHYL WG HERBICIDE	ECHEM (AUST) PTY LIMITED	WG
ESTEEM WDG SELECTIVE HERBICIDE	SIPCAM PACIFIC AUSTRALIA PTY LTD	WG
FARMALINX METFURON HERBICIDE	FARMALINX PTY LTD	WG
FARMOZ BUSHWACKER WG HERBICIDE	FARMOZ PTY LIMITED	WG
FARMOZ LYNX WG HERBICIDE	FARMOZ PTY LIMITED	WG
FREEZONE METSULFURON 600 WOODYWEED GRANULAR HERBICIDE	FREEZONE PUBLIC HEALTH PTY LTD	WG
GENEREX METSULFURON	MACSPRED PTY. LTD.	DF
GENFARM METSULFURON 600 WG HERBICIDE	LANDMARK OPERATIONS LIMITED	WG
KENSO AGCARE KEN-MET 600 WG HERBICIDE	KENSO CORPORATION (M) SDN. BHD.	WG
MACSPRED METMAC 600 HERBICIDE	MACSPRED PTY. LTD.	WG
MACSPRED METMAC 600 WG HERBICIDE	MACSPRED PTY. LTD.	GR
METSUN 600 HERBICIDE	GROW CHOICE PTY LIMITED	WG
METSURON 600 HERBICIDE	BIOTIS LIFE SCIENCE PTY LTD	WG
NUFARM ASSOCIATE HERBICIDE	NUFARM AUSTRALIA LIMITED	WG
OSPRAY METSULFURON 600WG HERBICIDE	OSPRAY PTY LTD	WG
OZCHEM WOODY WEED SPRAY HERBICIDE	OZCHEM PTY LTD	WG
OZCROP METSULFURON 600 WG HERBICIDE	CMS TRADE PTY LTD	WG
PACIFIC METSULFURON 600 WG HERBICIDE	PACIFIC AGRISCIENCE PTY LTD	WG
PARTI-SAN 600 HERBICIDE BY SANONDA	SANONDA (AUSTRALIA) PTY LTD	WG
RAINBOW METSULFURON 600 WG HERBICIDE	SHANDONG RAINBOW INTERNATIONAL CO., LTD.	WG
RAINBOWGREEN METSULFURON BRUSH CONTROL HERBICIDE	BOOROWA DEVELOPMENTS PTY LTD	WG
RC METSULFURON 600 WG HERBICIDE	RURALCHEM PTY LTD	WG
RYGEL METSULFURON 600 WG HERBICIDE	RYGEL AUSTRALIA PTY. LTD.	WG
SELECTIVE HERBICIDE AIM WDG	NUFARM AUSTRALIA LIMITED	WG
SMART METSULFRON 600 WG HERBICIDE	CROP SMART PTY LTD	WG
TECHCHEM METSULFURON-METHYL 600 WETTABLE POWDER CEREAL HERBICIDE	RURAL AGRICULTURAL CHEMICAL SUPPLIERS PTY LTD	WP
TITAN METSULFURON 600 WG HERBICIDE	TITAN AG PTY LTD	WG
TWO-WAY 600 WG HERBICIDE	OSPRAY PTY LTD	WG
UNITED FARMERS METSULFURON METHYL 600 HERBICIDE	RAVENSDOWN FERTILISER CO-OPERATIVE LIMITED	WP
UNITED FARMERS METSULFURON WG HERBICIDE	RAVENSDOWN FERTILISER CO-OPERATIVE LIMITED	WG
WHITESTAR METSULFURON 600WG HERBICIDE	AGRICULTURAL PRODUCT SERVICES PTY LTD	WG
WSD METSULFURON HERBICIDE	REBOP HOLDINGS PTY LTD T/A WESTERN STOCK DISTRIBUTORS	DF

2 PRICE:

$60.5

/kg

3 ACTIVE INGREDIENTS: Metsulfuron 600g/kg

4 CHEMICAL GROUP: B

5 RELATED HERBICIDES:

Broadstrike	Flumetsulam 800g/kg
Chlorsulfuron	Chlorsulfuron 750g/kg
Crusader	Pyroxulam 30g/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 682g/kg
Imazapyr	Imazapyr 250g/L or 750g/kg
Intervix	Imazamox 33g/L + imazapyr 15g/L
Iodosulfuron 100	Iodosulfuron 100g/kg
Iodosulfuron 50	Iodosulfuron 50g/kg + mefenpyr
Lightning	Imazapyr 175g/L + imazethapyr 525g/L
Logran 750	Triasulfuron 750g/kg
Londax	Bensulfuron 600g/kg
Mesosulfuron 30	Mesosulfuron 30g/L
Metsulfuron-methyl	Metsulfuron 600g/kg
Monza	Sulfosulfuron 750g/kg
Muster	Ethametsulfuron methyl 750g/kg
OnDuty	Imazapic 525 + Imazapyr 175g/L
Raptor WG 700	Imazamox 700 g/kg
Sempra	Halosulfuron 750g/kg
Spinnaker	Imazethapyr 700g/kg or 240g/L
Sulfometuron	Sulfometuron 750g/kg
Titus	Rimsulfuron 250g/kg
Trifloxysulfuron	Trifloxysulfuron 750g/kg

6 GENERAL DESCRIPTION:

Metsulfuron is an extremely potent herbicide on some annual and perennial broad-leaved species.
It is a selective, translocated herbicide that is mainly absorbed through leaves though root absorption can occur. Its main uses are for broad-leaved weed (especially sorrel) control in cereals, as a tank mix with glyphosate for pre-plant weed control and for the control of perennial weeds such as bracken and blackberry. It is of low toxicity to mammals, birds and fish. Metsulfuron 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 in the environment because of its low rates of use, low toxicity and quick degradation in field situations.

7 APPLICATION METHODS AND TIPS:

Metsulfuron is usually applied in water as a broadcast application through hydraulic nozzles or as a directed spray using hand held equipment. It can be applied in ultra low volumes of carrier.
It is commonly mixed with other herbicides.
Surfactants often increase weed control but should not be used when metsulfuron is tank mixed with other herbicides for selective weed control in crops.
Under stressed conditions weeds become more tolerant and crops less tolerant to metsulfuron. For each 10 degree drop in temperature the crops ability to break down metsulfuron drops by a factor of 2 to 5, thus under cold conditions crop damage is more likely.

8 WEATHER:

Rainfast in hours.
Frost effects:
Wind:
Inversions:
Temperature:
Delta T and relative humidity: Avoid application when Delta T is greater than

9 ADJUVANTS:

Wetting agents:
Spray oils:

10 WATER QUALITY:

Hard water:
Salty water:
Colloids:
pH:
Tank life:

11 COMPATIBILITY:

Non-ionic surfactants and crop oils increase absorption.
Metsulfuron is generally antagonistic with the grass herbicides. It is synergistic with chlorsulfuron and possibly with the hormonal herbicides and glyphosate.
Trace elements: It is not compatible with most trace elements and ammonium sulphate.
See HerbiGuide Compatibilities button.

12 EQUIPMENT:

13 SPRAYER DECONTAMINATION:

Clean up:
Remove nozzles and filters and clean separately. Triple rinse 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 and run through boom. This procedure is sufficient for spraying in other cereals or non selective applications.
Decontamination:
Remove the nozzles and screens and clean separately and allow to soak in a mixture of 500 mL chlorine bleach per 10 L water for at least 30 minutes.
Rinse sprayer 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 and run through boom. Drain tank and 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.
Fill tank with clean water and add 300 mL household chlorine (4%) bleach per 100 L water, flush through hoses and boom then stand for 15 minutes with agitation engaged, repeat. Rinse tank, hoses and boom thoroughly with clean water to remove traces of bleach.
Rinse screens and nozzles and replace.

14 HERBICIDE RESISTANCE:

Plant populations tolerant to metsulfuron are expected to occur naturally after repeated applications of herbicides from the sulfonylurea group.

15 REPLANTING INTERVALS:

For soil pH of 5.6-8.5

Crop	Time
Barley	6 weeks on label (2 is sufficient)
Beans: Faba	9 months
Canola	9 months on label (1 is sufficient)
Canola (IT varieties)	10 days on label (1 is sufficient)
Cereal Rye	6 weeks on label (2 is sufficient)
Chickpeas	9 months
Clovers	9 Months on label (1 is sufficient)
Lentils	9 months
Linseed	9 months
Lucerne	9 months
Lupins	9 Months on label (1 is sufficient)
Maize	14 months on label (10 is sufficient)
Medic	9 Months on label (1 is sufficient)
Millet: Japanese	14 months on label (10 is sufficient)
Millet: Panorama	14 months on label (10 is sufficient)
Millet: White French	14 months on label (10 is sufficient)
Oats	9 Months on label (1 is sufficient)
Peas	9 Months on label (1 is sufficient)
Safflower	9 months
Sorghum	14 months on label (10 is sufficient)
Soybeans	14 months on label (10 is sufficient)
Sunflower	14 months on label (10 is sufficient)
Triticale	6 weeks on label (2 is sufficient)
Wheat	10 days on label (1 is sufficient)

16 WITHHOLDING PERIODS:

Crop	Type	Time
All	Grazing	Not required
All	Harvest	Not required

17 RE-ENTRY PERIOD:

Wear protective clothing if in contact with the crop before the spray has dried.

18 PROTECTIVE CLOTHING:

Overalls, boots and washable hat. Use gloves and face shield when handling the concentrate.

19 SOIL:

Soil texture:
Soil pH:
Soil organic matter:

20 MODE OF ACTION:

Metsulfuron is absorbed by leaves and translocated to growing points of the plant where it stops cell division. Tolerant species, such as wheat and barley, degrade metsulfuron (by hydroxylation of the phenyl ring then conjugation with sugars) much faster than do sensitive species. Degradation products are non toxic and herbicidally inactive. Secondary effects on photosynthesis account for the yellowing of treated plants.
It does not normally affect seed germination.

21 SELECTIVITY:

Crop tolerance:

Varietal sensitivities:

Wheat - Amery, Brookton, Calingiri and Kulin are sensitive.

Effect on Clover Species:

Effect on Medic Species:

Effect on Lucerne:

Effect on Native Plants:

22 DISEASE AND INSECT EFFECTS:

23 PLANT SYMPTOMS:

Growth stops as soon as metsulfuron is translocated to the growing points. In perennial species this may be many months after treatment and new growth may start elongating before dying at the tip. Death then progresses from the tip back to the base of the plant. In annual weeds, growth stops soon after spraying. The leaves turn yellow or red from 1 to 3 weeks after spraying and death follows, 1 to 2 weeks later.

SECONDARY EFFECTS:

Metsulfuron and residues in the soil from previous applications may make the crop more susceptible to Take-All, CCN, Rhizoctonia and zinc, copper and manganese deficiency (Hollaway, 1997).
It has no impact on N or P nutrition of cereals (Wilhelm et al, 1995).

24 TOXICITY:

Mammalian toxicity - low.
Acute oral LD50 - > 5000 mg/kg (rat)
Acute dermal LD50 - > 2000 mg/kg (rabbit).
Skin - mildly to not irritating.
Eye - mildly to not irritating.
Vapour inhalation - LC50 > 5 mg/L air (rat).
Chronic oral toxicity - Low. NOEL 50 ppm for 2 years (rat).
Birds - low toxicity. LD50 mallard ducks > 2000 mg/kg and bobwhite quail > 5000 mg/kg diet.
Fish - low toxicity. LC50 rainbow trout and bluegill > 150 mg/L.
Invertebrates - low toxicity. LC50(48 hour) Daphnia > 150 mg/L. 21 day NOEL for survival and breeding > 150 mg/L.
Bees - low toxicity. LD50 > 25 ug/bee.
Earthworms - low toxicity. LC50 > 1000 mg/kg soil.

25 TOXICITY SYMPTOMS:

Metsulfuron does not usually cause any symptoms because of its low toxicity.

26 FIRST AID:

If SWALLOWED: If large amounts are swallowed then induce vomiting.
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.
Advice to doctor: Treat symptomatically.
Contact the Poisons Information Centre on 131126.

27 ENVIRONMENTAL FATE:

Metsulfuron is broken down in the soil mainly by microbes and hydrolysis. The half life is usually in the range of 1 week to 1 month depending on soil conditions. (6.2 to 144 days in US studies). Degradation is quickest in warm, moist, acid soils with a high organic matter. Little is naturally degraded due to exposure to sunlight and volatilisation. In water there is degradation by hydrolysis. It is non-volatile, but will move through the soil profile with the water flow. On the EPA classification it ranges from mobile to intermediate mobility depending on the soil type. Mobility usually increases with increasing soil pH and decreasing organic matter. Despite its mobility it is not expected to cause problems in the environment because of its low rates of use, quick degradation and low toxicity. Very little leaching below the surface horizon of soils has been found. In animals the majority of metsulfuron ingested is excreted intact in the urine. There is no significant accumulation in milk or tissues.
Metsulfuron is stable to hydrolysis at neutral to alkaline pH. In acid conditions it hydrolyses in water with a half life of 21 days at ph 5 and 25⁰C and > 30 days at ph 5 and 15⁰C.

28 REGISTERED CROPS:

See HerbiGuide Species Solution tab.

29 REGISTERED WEEDS:

See HerbiGuide Species Solution tab.

30 REGULATION AND LEGAL:

UN number:
CAS numbers:
Hazchem code:
NOHSC classification:
Land transport:
Dangerous goods class (ADG):
Sea transport:
Proper shipping name:
International Maritime Dangerous Goods Code (IMDG):
Class:
Packaging group:
EPG:
Risk phrases:

31 PROPERTIES:

Water solubility at 25 C. - 1100 ppm at pH 5; 9500 ppm at pH 7
Octanol:Water ratio at 25 C. - 1.0 at pH 5; 0.014 at pH 7
Vapour Pressure at 25 C. - Very low. 2.5 x 10-12
Dissociation constant - 3.3 pKa
Melting point - 158 C.
Molecular weight - 381.37
Half life in water - 33 days at pH5 and 25 C. 2.1 days at pH5 and 45 C. 33 days at pH7 and 45 C.

32 SPILLS:

Sweep up granules and dipose in a chemical disposal pit.

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:

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.

METSULFURON-METHYL

2. Concentration of Active Constituent : 600g/kg
3. Formulation : Water-dispersible Granules.
4. Poison Schedule : Exempt from scheduling
5. Trade name : Ally - Du Pont
6. Product Colour : Grey-white
7. Product Flammability : Non flammable
8. Dangerous Goods Class : exempt.
9. Shelf Life : Unlimited if kept dry.
(When stored under ideal conditions- refer Page 4)
10. Mixtures Compatibility :
2,4-D amine MCPA amine
Agtryne MA (terbutryn + MCPA) L.V.E. MCPA
diuron (eg Diuron 80) metribuzin
dicamba (eg Banvel 200) Puma (fenoxaprop-ethyl)
Le Mat (omethoate) Roundup (glyphosate)
Lontrel (clopyralid) terbutryn (eg Igran 500 FW)
Lorsban (chlorpyrifos) Tigrex (diflufenican)
Do NOT mix with :- Achieve (tralkoxydim), Hoegrass/Nugrass (diclofop-methyl)
11. Registered Crop(s) : Wheat, Barley, Triticale, Cereal Rye.
12. Effect of Soil Texture on Herbicide : Residual weed control may be reduced on light soils under heavy rainfall.
13. Effect of Soil pH on Herbicide : Using Ally on highly alkaline soils (pH 8.5+) may result in reduced tolerance of following crops. Most rapid breakdown occurs in warm, moist acid soils.
14. Effect of Soil Organic Matter on Herbicide : Residual weed control may be reduced on high organic matter soils.
15. Mode of Action : Post-emergent - Foliar translocated. Some root absorption may occur after rainfall.
16. Application Timing : 3 leaf to before booting stage of the crop. If applying a tank mix always adhere to the crop stage recommendations for the companion product.
17. Rate Variations : 5 - 7 g/ha.
18. Rates Selection : Lower rate - 5g/ha. Higher rate use 7 g/ha for selected labelled weeds under high weed pressure, or when selected weeds are larger.
19. Crop Damage (Crop Tolerance) : Increased risk of adverse crop effect if applied to diseased crop, or stressed by any other cause.
20. Effect on Crop : Temporary yellowing, stunting.
21. Effect on Legume Species : Knockdown and residual effects will occur. DO NOT use on crops undersown with legume pasture species, eg clovers, medics.
22. Soil Moisture at Application :
DRY - Reduced efficacy will occur due to crop and weed stress.
MOIST - Ideal.
WATERLOGGED - Do not apply as crop stressed.
23. Frost Effects : Immediately prior to, during and after application possible decrease in efficacy as weeds are stressed, there is also a risk of temporary herbicide damage to the crop. After application the greater the number of consecutive days of frost the greater the risk to the crop.
24. Frost Free Days Required After Application : Not just a function of frost - will depend on daily temperatures which will influence the rate of growth.
25. Effect of Application Water Quality on Herbicide :
Saline Water - Little effect.
Soil Colloids - Little effect.
26. Recommended Water Volume : Minimum 50 L/ha boom, 20 L/ha aircraft.
27. Nozzle Type : Flat fan.
28. Recommended Nozzle Pressure : None recommended.
29. Recommended Filter Size :
30. Recommended Wetter: Du Pont Surfactant or other non-ionic surfactant.
Eg. 0.1% non-ionic active constituent at 100 mL/100 L.
31. Other Additives : Not recommended.
32. Rain Fastness : 2 hours.
33. Time Interval Before Effect is Noticed : 7 - 30 days.
35. Effect of Herbicide/Disease Interaction on Crop : CCN and Rhizoctonia: crop damage may occur. Generally the disease puts the crop under stress and therefore may cause crop injury. The effects of CCN and Rhizoctonia can be accentuated after application of Ally. Do NOT apply to crops affected by CCN.
36. Withholding Period : 0 days. But if area is to be grazed suggest 1-2 days to allow product to be translocated throughout target plant.
37. Plant-Back Period : Wheat - 10 days, Linseed - 9 months, Barley - 6 weeks, Lucerne - 9 months, Peas - 9 months, Medics - 9 months, Lupins - 9 months, Clovers - 9 months, Safflower - 9 months, Japanese Millet - 14 months, Oats - 9 months, Maize - 14 months, Faba Beans - 9 months, Sorghum - 14 months, Chickpeas - 9 months, Sunflower - 14 months, Rapeseed - 9 months, Soybeans - 14 months
39. Other Comments :
Numbered data from "Crop Herbicide Information"
Courtesy of A.J. Chambers, Vic. Dept of Food & Agric.

33 REFERENCES:

Hollaway, K. (1997). Australian Grain. April-May 1997, 11-14.

Wilhelm, N., Ramsey, W and Neate, S. (1995) Australian Grain. Western Focus. October-November. vii.

Acknowledgments:

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