Ametryn 500

Ametryn 500

1 Trade name	Manufacturer	Form
AGRONICA AMETREX SC HERBICIDE	FARMOZ PTY LIMITED	SC
FLOWABLE PRIMATOL Z LIQUID HERBICIDE	SYNGENTA CROP PROTECTION PTY LIMITED	SC
HALLEY AMETRYN 500SC HERBICIDE	HALLEY INTERNATIONAL ENTERPRISE (AUSTRALIA) PTY LTD	SC
SIPCAM PACIFIC AMESIP 500 FLOWABLE HERBICIDE	SIPCAM PACIFIC AUSTRALIA PTY LTD	SC
VIKING HERBICIDE	CROP CARE AUSTRALASIA PTY LTD	SC

3 ACTIVE INGREDIENTS: Ametryn 500 g/L as a liquid formulation.

4 CHEMICAL GROUP: C.

Triazine.

5 RELATED HERBICIDES:

Atrazine, cyanazine, cyprazine, desmetryn, dipropetryn, metribuzin, procyazine, prometon, prometryn, propazine, secbumeton, simazine, terbuthylazine, terbutryn.

6 GENERAL DESCRIPTION:

A soil applied, upward translocated triazine herbicide.

7 APPLICATION METHODS AND TIPS:

10 WATER QUALITY:

Hard water

Colloids

pH

11 COMPATIBILITY:

Trace elements.

14 HERBICIDE RESISTANCE:

18 PROTECTIVE CLOTHING:

20 MODE OF ACTION:

Soil applied.

Uptake and translocation:

Absorbed by roots and translocated upwards in the xylem water stream.

Little or no downward translocation from shoots.

Physiological effects:

Residual Life and Breakdown:

Selectivity:

23 PLANT SYMPTOMS:

SECONDARY EFFECTS:

24 TOXICITY:

Summary:

Schedule 5.

Details:

Mammalian toxicity - low.

Acute oral LD50 - 1110 mg/kg, [For comparison table salt is 3000 mg/kg]

Acute dermal LD50 - > mg/kg (rabbit).

Skin -

Eye -

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 - toxicity.

Fish - toxicity 96 hour LC50 3.7 mg/L (Bluegill)¹²¹⁴.

Invertebrates - toxicity.

Bees - toxicity.

25 TOXICITY SYMPTOMS:

26 FIRST AID:

27 ENVIRONMENTAL FATE:

It has a half life in soil of 3-4 weeks.

It has an EPA classification for soil mobility that ranges from

Ground water contamination

Replanting intervals

Accumulation in milk and tissues.

31 PROPERTIES:

Active is a white solid.

Water solubility at 20 C. - 185 ppm;

Oil soluble.

Octanol:Water ratio at 25 C. - at pH 5;

Vapour Pressure at 20 C. - 8.4 x 10^-7 mm Hg.

Dissociation constant - pKa

Melting point - 84-85 C.

Molecular weight - 227.3

Half life in water - days at pH5 and 35 C.

It has a leaching index of 6. (for comparison, trifluralin is 0-1 and chlorsulfuron is 25-30).

It has a half life 27 days at 20 degrees and 50% WHC in Mohlin soil.

33 REFERENCES:

Ashton, F.M. and Crafts, A.S. (1981) Mode of Action of Herbicides. (Wiley-Interscience publication).

Acknowledgments:

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