|1 Trade name||Manufacturer||Form|
|DUAL GOLD HERBICIDE||SYNGENTA CROP PROTECTION PTY LIMITED||EC|
ACTIVE INGREDIENT: METOLACHLOR 960 g/L4 CHEMICAL GROUP: K.
5 RELATED HERBICIDES: Alachlor6 GENERAL DESCRIPTION:
7 APPLICATION METHODS AND TIPS:Metolachlor is normally applied to bare soil or in combination with a knock down herbicide. Rainfall is important to wash the herbicide from plant residue into the soil. High plant residue levels may reduce weed control (eg. 4 t/ha wheat straw reduced weed control by 20%). For grass weed control, the ideal placement for metolachlor is just above the germinating seeds. Deeper incorporation appears beneficial for broadleaved weed control. This may be due to metolachlor being more efficiently absorbed by shoots and cotyledons of grasses compared to roots and vice versa for broadleaved species.
15 REPLANTING INTERVALS:
|All unregistered crops||6 months|
16 WITHHOLDING PERIODS:
17 RE-ENTRY PERIOD:Wear protective clothing if re entry before the spray has dried.
24 TOXICITY:Repeated exposure may cause allergic disorders.
26 FIRST AID:Contact Poisons Information Centre on 13 11 26.
20 MODE OF ACTION:Metolachlor is absorbed by the roots and young leaves (coleoptile) of all germinating plants. It requires moist soil and rainfall to wash it into the top few centimetres of soil to be effective. It moves mainly in an upward direction and inhibits plant growth. The primary biochemical mechanism is unknown. Growth inhibition is due to a reduction in both cell division and enlargement. Longitudinal growth is reduced more than lateral growth. This results in a compact appearance of affected roots. Protein and fat synthesis, respiration, lignification and anthocyanin production are reduced. Hormonal effects also occur resulting in hormone like symptoms.
23 PLANT SYMPTOMS:Seeds normally germinate but often fail to emerge. Seedlings that do emerge have stunted and abnormal growth. The first leaf may fail to unfold. Roots are stunted and compact. Leaf senescence may be delayed.
27 ENVIRONMENTAL FATE:Metolachlor is degraded mainly by microbes in the field. The half life is normally 3 to 8 weeks and may be up to 12 weeks under cold, dry conditions in silty soils. The half life is usually longer in clay loams than sandy loams which is contrary to most other herbicides.
|2.||Concentration of Active Constituent : 960 g/L|
|3.||Formulation : Emulsifiable Concentrate|
|4.||Poison Schedule : 5|
|5.||Trade name : Dual Gold - Novartis|
|6.||Product Colour : Yellow to brown liquid.|
|7.||Product Flammability : Flammable.|
|8.||Dangerous Goods Class :|
|9.||Shelf Life : In excess of 2 years.|
|10.||Mixtures Compatibility : Flowable Gesaprim (atrazine)|
|11.||Registered Crop(s) : Wheat, Barley, Pastures.|
|12.||Effect of Soil Texture on Herbicide : Poor seed bed can result in uneven spray cover and weed germination to escape through 'holes' in the herbicide barrier. Leaching is inhibited by high clay and/or silt content.|
|13.||Effect of Soil pH on Herbicide : Not significant.|
|14.||Effect of Soil Organic Matter on Herbicide : Rapidly adsorbed by organic matter. Organic matter is the main constituent determining leaching behaviour as metolachlor is rapidly adsorbed. Crop damage is more likely on soils with low organic matter.|
|15.||Mode of Action : Affects coleoptile absorption of nutrients, germinating monocotyledon seedlings absorb most metolachlor through the shoots, just above the seed. Dicotyledon plants appear to absorb the herbicide through both shoots and roots. Short residual pre-emergent.|
|16.||Application Timing : Immediately after planting and before crop and weeds have emerged.|
|17.||Rate Variation : 300 to 500 mL/ha.|
|18.||Rates Selection : Lower rate in dry areas or when shorter residual control is required or in situations where crop competition is strong. Higher rate in wet areas or when longer residual control is required or in situations where crop competition is minimal.|
|19.||Crop Damage (Crop Tolerance) :|
|20.||Effect on Crop : Good crop tolerance.|
|21.||Effect on Clover Species : Clovers have good tolerance. In trials Trikkala sub-clover; Haifa white; Maral Persian; Paradanna; Balansa and Redquin showed excellent tolerance to maximum registered rate.|
|22.||Soil Moisture at Application :|
|23.||Frost Effects : Not applicable.|
|24.||Frost Free Days Required After Application : Not applicable.|
|26.||Recommended Water Volume : Sufficient to give good coverage of soil with equipment used. Minimum of 60 L/ha stated on label.|
|27.||Nozzle Type : Flat fan or hollow cone.|
|28.||Recommended Nozzle Pressure : Follow manufacturer's recommendations.|
|30.||Recommended Wetter : Nil.|
|31.||Other Additives : Not applicable.|
|32.||Rain Fastness : Not applicable.|
|33.||Time Interval Before Effect is Noticed : Effects noted as reduced weed numbers reaching seedling stage.|
|36.||Withholding Period : Nil.|
|37.||Plant-Back Period : 6 months except for certain tolerant crops specified on the label.|
|38.||Spray Tank Clean-Up : Wash thoroughly with clean water after use.|
|39.||Other Comments : Apply after sowing and before crop and weeds emerge. Sufficient rain is needed within 10 days to move the Dual into the soil. If rain does not fall within this period lightly incorporate.|