Metsulfuron-Methyl 600 WGPlant Protection Product ComparisonPlant Protection Product ComparisonReport inaccuraciesReport inaccuracies

Controls a wide range of weeds in cereals (not oats), such as sorrel, turnip, mustard, Doublegee, geranium, lupins, peas, dock, wireweed, storks bill, medics, sub-clover, Paterson’s curse, volunteer legumes, soursob, cape tulip. Often used as a spike for glyphosate.  Also controls bracken and blackberry.

GENERAL INSTRUCTIONS

4Farmers Metsulfuron-Methyl 600 WG Selective Herbicide is a selective systemic herbicide which is adsorbed through the roots and foliage with rapid translocation acting by inhibiting cell division in meristems thus stopping growth. Some crops are extremely sensitive to low concentrations of this product. See “Sprayer Cleanup” section. Where treatment is delayed or where weeds are not actively growing due to adverse conditions, results may be slow to appear and weeds may only be stunted or suppressed. Instructions specific for cereals: With the exception of the preplant weed control recommendations, apply at the early post emergence stage of the crop (3 leaf to before booting) when weeds are small (i.e. no greater than 5cm in height or diameter) and actively growing. Best weed control is obtained when rainfall wets the soil to a depth of 5 to 7.5cm within 4 weeks of application. Where treatment is delayed or where weeds are not actively growing due to adverse conditions, results may be slow to appear and weeds may be only stunted or suppressed (eg. Indian Hedge Mustard). 4Farmers Metsulfuron-Methyl 600 WG Selective Herbicide will remain in the soil for a period of time (see Crop Rotation Recommendations). The persistence of 4Farmers MetsulfuronMethyl 600 WG Selective Herbicide in the soil is dependent on various environmental conditions e.g. soil pH, temperature, soil moisture and organic matter. Wet, warm, acid soils high in organic matter favour breakdown of 4Farmers Metsulfuron-Methyl 600 WG Selective Herbicide in the soil. It should be noted that 4Farmers Metsulfuron-Methyl 600 WG Selective Herbicide does not provide a commercially acceptable level of soil residual weed control. Crops other than wheat, barley, triticale and cereal rye may be extremely sensitive to low concentrations of 4Farmers Metsulfuron-Methyl 600 WG Selective Herbicide residues in the sprayer or in the soil. See “Sprayer Clean-up” and “Crop Rotation Recommendations”. The recommendation of the addition of 4Farmers MetsulfuronMethyl 600 WG Selective Herbicide to 4Farmers Glyphosate 470 or 4Farmers Potassium Glyphosate 500 as a pre-plant knockdown is to enhance the control of certain broadleaf weeds (e. g. doublegee, sorrel, erodium, clover, medic and soursob) and to help prevent (or at least minimise) the risk of resistant weeds occurring. Its purpose is not to provide residual control of weeds.

Instructions specific for brush and herbaceous weed control:

Apply when bushes/plants are actively growing. Where treatment is delayed or bushes/plants are not actively growing due to adverse conditions (such as a period of prolonged dry weather) or if partial spray coverage occurs, results may be slow to appear and subsequent regrowth may occur. Should regrowth occur, re-treatment at the recommended rate is advised. Re-treatment of blackberries should only be undertaken once regrowth has reached one (1) metre tall - this may not be until two (2) years after the initial application. For control of bushes previously sprayed with other brush control herbicides or for bushes which may have been burned or slashed ensure two (2) years has elapsed. Due to the widespread picking of blackberries by the public, it is recommended that the product is not applied to bushes bearing mature fruit.

Instructions specific for treatment of pasture or pasture renovation:

Allow weeds to recover from grazing before application. Docks and Sorrel in particular require fresh leaf growth for adequate uptake of chemicals. Legumes will be removed from pasture if oversprayed with 4Farmers Metsulfuron-Methyl 600 WG Selective Herbicide. Some grasses will be damaged in pasture sprayed with the product and biomass production may be reduced for several months. 4Farmers Metsulfuron-Methyl 600 WG Selective Herbicide used on established Perennial Phalaris and/or established Perennial Cocksfoot may cause temporary yellowing and some stunting. 4Farmers Metsulfuron-Methyl 600 WG Selective Herbicide can severely damage Annual and Perennial Ryegrass. 4Farmers Metsulfuron-Methyl 600 WG Selective Herbicide does not control/ damage Silvergrass (Vulpia spp.), Brome Grass (Bromus spp.) or Winter grass (Poa spp.). Sorrel seedlings may germinate after the break in the following year, particularly after cultivation. 23 The ungerminated clover seed bank is not affected by 4Farmers Metsulfuron-Methyl 600 WG Selective Herbicide application. Clover vigour is often increased in the year following application where seed banks are reasonable. The seed set of clover in the year of application of 4Farmers Metsulfuron-Methyl 600 WG Selective Herbicide will be significantly reduced particularly from the WinterSpring application. This effect may impact on the clover seed bank therefore re-sowing may be necessary. Where clover seed banks are high re-sowing is not necessary. For pasture topping situations a combination of 4Farmers Metsulfuron-Methyl 600 WG Selective Herbicide plus 4Farmers glyphosate can be used, however the Crop Rotation recommendations should be observed. Refer to the Directions of Use section of each product for the appropriate rate and critical comments for the target weed spectrum.