Metsulfuron-methyl

1 Trade nameManufacturerForm
4FARMERS METSULFURON METHYL 600 WETTABLE POWDER CEREAL HERBICIDE4 FARMERS PTY LTDWP
AGCHEM METSULFURON-METHYL 600 WETTABLE POWDER CEREAL HERBICIDEIMTRADE AUSTRALIA PTY LTDWP
AGRICROP BRUSH KING 600 HERBICIDEAGRICROP PTY LTDDF
APS METSULFURON WATER DISPERSIBLE GRANULE HERBICIDEAGRICULTURAL PRODUCT SERVICES PTY LTDWG
ARM METSULFURON HERBICIDEPROTERRA PTY LTDWP
CHEMAG METSULFURON WG HERBICIDEIMTRADE AUSTRALIA PTY LTDWG
CHEMFORCE METSULFURON 600WG HERBICIDEFRANK VANDERKLEY & PAUL RICHARDS T/A CHEMFORCE AUSTRALIAWG
CONQUEST METSULFURON 600 WG HERBICIDECONQUEST AGROCHEMICALS PTY LTDWG
DOW AGROSCIENCES METSULFURON HERBICIDEDOW AGROSCIENCES AUSTRALIA LIMITEDWG
DUPONT ALLY HERBICIDEDU PONT (AUSTRALIA) LTDDF
DUPONT BRUSH-OFF BRUSH CONTROLLERDU PONT (AUSTRALIA) LTDGR
ECHEM METSULFURON-METHYL WG HERBICIDEECHEM (AUST) PTY LIMITEDWG
ESTEEM WDG SELECTIVE HERBICIDESIPCAM PACIFIC AUSTRALIA PTY LTDWG
FARMOZ BUSHWACKER BRUSH CONTROL HERBICIDEFARMOZ PTY LIMITEDWP
FARMOZ BUSHWACKER WG HERBICIDEFARMOZ PTY LIMITEDWG
FARMOZ LYNX 600 HERBICIDEFARMOZ PTY LIMITEDWP
FARMOZ LYNX WG HERBICIDEFARMOZ PTY LIMITEDWG
GENEREX METSULFURONGENEREX AUSTRALIA PTY LIMITEDDF
GENFARM MURON 600 WG HERBICIDEGENFARM CROP PROTECTION PTY LTDWG
INNOVA METSULFURON 600 HERBICIDESYNGENTA CROP PROTECTION PTY LIMITEDWG
KEN-MET 600 WATER DISPERSIBLE GRANULE HERBICIDEKENSO CORPORATION (M) SDN BHDWG
MACSPRED METMAC 600 HERBICIDEMACSPRED PTY LTDWG
METSUN 600 HERBICIDEGROW CHOICE PTY LIMITEDWG
NUFARM ASSOCIATE HERBICIDENUFARM AUSTRALIA LIMITEDWG
OSPRAY METSULFURON 600WG HERBICIDEOSPRAY PTY LTDWG
OZCHEM WOODY WEED SPRAY HERBICIDEOZCHEM PTY LTDWG
PARTI-SAN 600 HERBICIDE BY SANONDASANONDA (AUSTRALIA) PTY LTDWG
RAINBOWGREEN METSULFURON BRUSH CONTROL HERBICIDERAINBOWGREEN PTY LTDWG
RAINBOWGREEN MUSTER HERBICIDERAINBOWGREEN PTY LTDWG
RYGEL BRUSHMASTER HERBICIDERYGEL AUSTRALIA PTY LTDWG
RYGEL METSULFURON 600 WG HERBICIDERYGEL AUSTRALIA PTY LTDWG
S U METSULFURON 600 HERBICIDESU PTY LTDWG
SELECTIVE HERBICIDE AIM WDGNUFARM AUSTRALIA LIMITEDWG
SMART METSULFURON 600 WG HERBICIDECROP SMART PTY LTDWG
SUMMIT SUM-MET DF HERBICIDESIPCAM PACIFIC AUSTRALIA PTY LTDDF
TECHCHEM METSULFURON-METHYL 600 WETTABLE POWDER CEREAL HERBICIDERURAL AGRICULTURAL CHEMICAL SUPPLIERS PTY LTDWP
TITAN METSULFURON 600 WG HERBICIDETITAN AG PTY LTDWG
TRADELANDS METSULFURON-M WG HERBICIDETRADELANDS PTY LTDWG
TWO-WAY 600 WG HERBICIDEAGVANTAGE PTY LTDWG
UNITED FARMERS METSULFURON METHYL 600 HERBICIDEUNITED FARMERS CO-OPERATIVE COMPANY LTDWP
UNITED FARMERS METSULFURON WG HERBICIDEUNITED FARMERS CO-OPERATIVE COMPANY LTDWG
WHITESTAR METSULFURON 600WG HERBICIDEAGRICULTURAL PRODUCT SERVICES PTY LTDWG
WSD METSULFURON HERBICIDEREBOP HOLDINGS PTY LTD T/A WESTERN STOCK DISTRIBUTORSDF


2 PRICE:

$98/kg

3 ACTIVE INGREDIENTS: Metsulfuron 600g/kg

4 CHEMICAL GROUP: B

5 RELATED HERBICIDES:

ArsenalImazapyr 250g/L or 750g/kg
BroadstrikeFlumetsulam 800g/kg
ChlorsulfuronChlorsulfuron 750g/kg
EclipseMetosulam 714g/kg
ExpressTribenuron methyl 750g/kg
FlameImazapic 240g/L
Harmony MMetsulfuron 68g/kg + thifensulfuron 682g/kg
IntervixImazamox 33g/L + imazapyr 15g/L
Iodosulfuron 50Iodosulfuron 50g/kg + mefenpyr
LightningImazapyr 175g/L + imazethapyr 525g/L
Logran 750Triasulfuron 750g/kg
LondaxBensulfuron 600g/kg
Mesosulfuron 30Mesosulfuron 30g/L
Metsulfuron-methylMetsulfuron 600g/kg
MonzaSulfosulfuron 750g/kg
MusterEthametsulfuron methyl 750g/kg
OnDutyImazapic 525 + Imazapyr 175g/L
Raptor WG 700Imazamox 700 g/Kg
SempraHalosulfuron 750g/kg
SpinnakerImazethapyr 700g/kg or 240g/L
SulfometuronSulfometuron 750g/kg
TitusRimsulfuron 250g/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
CropTime
Barley6 weeks on label (2 is sufficient)
Beans: Faba9 months
Canola9 months on label (1 is sufficient)
Canola (IT varieties)10 days on label (1 is sufficient)
Cereal Rye6 weeks on label (2 is sufficient)
Chickpeas9 months
Clovers9 Months on label (1 is sufficient)
Lentils9 months
Linseed9 months
Lucerne9 months
Lupins9 Months on label (1 is sufficient)
Maize14 months on label (10 is sufficient)
Medic9 Months on label (1 is sufficient)
Millet: Japanese14 months on label (10 is sufficient)
Millet: Panorama14 months on label (10 is sufficient)
Millet: White French14 months on label (10 is sufficient)
Oats9 Months on label (1 is sufficient)
Peas9 Months on label (1 is sufficient)
Safflower9 months
Sorghum14 months on label (10 is sufficient)
Soybeans14 months on label (10 is sufficient)
Sunflower14 months on label (10 is sufficient)
Triticale6 weeks on label (2 is sufficient)
Wheat10 days on label (1 is sufficient)

16 WITHHOLDING PERIODS:

CropTypeTime
AllGrazingNot required
AllHarvestNot 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.