3 ACTIVE INGREDIENTS: Rimsulfuron 250 g/kg as a dry flowable water dispersible granule
4 CHEMICAL GROUP: B.
5 RELATED HERBICIDES:
Chlorsulfuron, metsulfuron, triasulfuron.
6 GENERAL DESCRIPTION:
Mainly used for the suppression of Blackberry Nightshade and control of other broadleaf weeds in Tomatoes.
7 APPLICATION METHODS AND TIPS:
9 ADJUVANTS:
Spray oils may improve weed control but may reduce selectivity on the crop.
10 WATER QUALITY:
Hard water
Colloids
pH
11 COMPATIBILITY:
Trace elements.
12 EQUIPMENT:
Boom spray as overall treatment of band spray.
14 HERBICIDE RESISTANCE:
Weeds tolerant to rimsulfuron are expected to develop after multiple applications of this and other group B herbicides.
18 PROTECTIVE CLOTHING:
20 MODE OF ACTION:
Selective and systemic.
Uptake and translocation:
Absorbed by foliage and roots.
Physiological effects:
Inhibits the acetolactate synthase (ALS) enzyme.
Cell growth and division is stopped because branched chain amino acid synthesis is stopped.
Residual Life and Breakdown:
Selectivity:
Selectivity is due to rapid inactivation of rimsulfuron by tolerant species.
23 PLANT SYMPTOMS:
May cause temporary chlorosis or a lighter green colour of the crop (tomatoes) which usually disappears within 2 weeks days. Chlorosis usually doesn't occur if there has been 3 sunny days before spraying.
Weeds may take 1-3 weeks to yellow or discolour before dying.
SECONDARY EFFECTS:
24 TOXICITY:
Summary:
Low toxicity to humans, animals, invertebrates, insects and fish.
Over 50% is excreted intact in the faeces and urine in mammals.
No detectable residues were found in the fat, milk or muscle of lactating goats.
At high dose rates, residues of <0.02 ppm were found in fat, eggs and muscle of poultry.
Details:
Mammalian toxicity - Low toxicity.
Acute oral LD50 - Low toxicity. >5000 mg/kg (rats), [For comparison table salt is 3000 mg/kg]
Chronic oral toxicity NOEL - 1.6 mg/kg/day for one year.
Acceptable daily intake ADI for humans - 0.02 mg/kg/day.
Not carcinogenic, mutagenic or teratogenic (i.e. does not cause cancer or reproductive problems).
Other Species -
Birds - Low toxicity.
Fish - Low toxicity LC50 > ppm.
Invertebrates - Low toxicity.
Bees - Low toxicity.
Moderately toxic to green algae.
Highly toxic to Duckweed (Lemma spp.).
25 TOXICITY SYMPTOMS:
Symptoms are mainly decreased body weight gain, loss of appetite and diuretic effect at high dose rates (>190 mg/kg/day).
26 FIRST AID:
27 ENVIRONMENTAL FATE:
It has a half life in soil of 5-17 days in the field. In experiments it has ranged from 5 days at 60% soil moisture and 20C to 77 days at 40% soil moisture and 5C. The half life is around 18-24 days under anaerobic conditions.
Sunlight appears to have little effect on the rate of breakdown.
The half life in water at 25C is 5-15 hours at pH 9, 7-25 days at pH 7 and 1.5-5 days at pH 5.
It has an EPA classification for soil mobility that ranges from
It is highly mobile in the soil but field studies indicate little downward movement in the soil.
Leaching - <0.001 ppb soil water concentration is expected at a depth of 1 m in soil. In field studies none was found below 15 cm deep.
It is not expected to accumulate in the soil or ground water.
Ground water contamination - not expected.
Replanting intervals - Only tomatoes and potatoes can be grown after a tomato crop that has been treated. 18 months for all other Wheat, Barley and Oats and 23 months for Sunflower, Maize and Zucchini in Australia until further data presented. In the USA Replanting interval for Wheat, Oats and Barley is 6 months and 11 months for Sunflower, Maize and Zucchini.
Accumulation in milk and tissues. - none expected.
No residues were found in tomato 7 days post treatment. Metabolites were <0.1ppm 60 days after treatment.
Rimsulfuron and it metabolites appear to be not soluble in fat.
Maximum Residue Limit (MRL) - 0.05 mg/kg.
28 REGISTERED CROPS: (Button)
29 REGISTERED WEEDS: (Button)
31 PROPERTIES:
Water solubility at 25 C. - ppm at pH ;
Oil solubility -
Octanol:Water ratio at 25 C. - 1.94 at pH 5; 0.0344 at pH 7.
Vapour Pressure at 25 C. - 1.5 x 10-8
Dissociation constant - pKa
Melting point - 176-178C.
Molecular weight - 431.1
Half life in water - days at pH5 and 35 C.
Colour - White
Density - 0.784
Form - Powder at room temperature.
Field Crop Herbicide Information:
CHEM NAME Rimsulfuron
2. Concentration of Active Constituent : 250g/kg
Trade Name : Titus
3. Formulation : Dry flowable water dispersible granule
4. Poison Schedule : 0
6. Product colour : white
7. Product Flammability :
8. Dangerous Goods Class : Nil
9. Shelf Life :
10. Mixtures Compatibility : Don't store mixtures.
11. Registered Crop(s) : Tomatoes
12. Effect of Soil Texture on Herbicide :
13. Effect of Soil pH on Herbicide :
14. Effect of Soil Organic Matter on Herbicide :
15. Mode of Action :
16. Application Timing : Early post emergence to weeds (cotyledon to 2 leaf stage for Blackberry Nightshade and cotyledon to 4 leaf stage for other weeds . Post emergence to the beginning of flowering of tomatoes.
17. Rate Variations :
18. Rates Selection : 60 g/ha with a repeat application of 60 g/ha 7-14 days later. No more than 150 g/ha total to be applied.
19. Weeds Controlled :
20. Effect on Crop :
21. Effect on Legume Species : Damaging
22. Soil Moisture at Application :
DRY -
MOIST -
WATERLOGGED -
23. Frost Effects :
24. Frost Free Days Required After Application :
25. Effect of Application Water Quality on Herbicide :
Saline Water -
Soil Colloids -
26. Recommended Water Volume : 50 L/ha
27. Nozzle Type : Flat fan.
28. Recommended Nozzle Pressure :
29. Recommended Filter Size : Mesh size as suitable for nozzle being used.
30. Recommended Wetter
31. Other Additives : Use a wetting agent. Don't use spray oils because these may cause crop damage.
32. Rain Fastness : 2 hours.
33. Time Interval Before Effect is Noticed :
34. Weed Symptoms :
35. Effect of Herbicide/Disease Interaction on Crop :
36. Withholding Period : 28 days before harvest. 42 days for grazing.
37. Plant-Back Period :
Spray Tank Clean-Up : Drain tank and flush with clean water. Fill the tank with clean water and add 300 mL of 4% chlorine bleach per 100 L of water. Flush through lines then agitate for 15 minutes before emptying. Repeat this then flush with clean water. Remove and clean filters and nozzles separately. Don't use chlorine with ammonia cleaners or fertilisers because this can release toxic chlorine fumes.
Remove the nozzles and screens and clean separately.
Other Comments :
Restricted entry period - nil.
Protective clothing. Face shield or goggles when handling the concentrate and mixing.
33 REFERENCES:
DuPont technical information.
Acknowledgments:
Collated by HerbiGuide. For more information see www.herbiguide.com.au or phone 08 98444064.