Ozcrop Metsulfuron 600WG Herbicide

When used as directed, Metsulfuron 600WG Herbicide has an NIL withholding period, and stock may continue to graze where the product has been used in pasture situations. To ensure product efficacy, it is recommended that stock be removed from the pasture for about three days. However, this is only best practice advice. Certain plants, such as bracken, are naturally toxic to stock. When toxic plants are present, it is recommended that grazing be delayed until complete browning of treated plants has occurred.

Metsulfuron Methyl is registered to control Alligator Weed. However, the critical comments for the product state that the product should not be applied in aquatic situations. To the best of our knowledge, Biactive Glyphosate formulations are the only herbicides recommended for this purpose.

There is a NIL withholding period for Metsulfuron 600WG Herbicide, and stock may continue to graze where the product has been used in pasture situations. To ensure product efficacy, it is recommended that stock be removed from the pasture for about three days. However, this is only best practice advice. Certain plants, such as bracken, are naturally toxic to stock.
When toxic plants are present, it is recommended that grazing be delayed until complete browning of treated plants has occurred.

Metsulfuron 600WG Herbicide is not registered or recommended for use in any domestic turf or garden situation, and to do so is at your own risk. When applying metsulfuron-methyl, there is a risk of root uptake of non-target broadleaf (e.g. trees & shrubs) species due to its mobility potential, which is affected by environmental factors, soil profiles, temperatures and rainfall. The half-life of metsulfuron-methyl ranges from 14 to 180 days, with a typical time of 30 days. The plant back period could be up to 6 months. Metsulfuron-Methyl is broken down in the soil mainly by chemical hydrolysis and, to a lesser degree, by soil microbes. Other factors which affect breakdown are soil pH, soil moisture and temperature. Research indicates it is faster in warm, wet, and acidic soils and slowest in alkaline, cold, and dry soils.

Buckthorn (Rhamnus alaternus) is not listed as a species controlled by Metsulfuron 600WG Herbicide. However, as Buckthorn is a Mediterranean broadleaf species, it should be susceptible to Herbicides often used to control trees. For stem injection applications, these include Surefire Treeson Herbicide, Tordon RegrowthMaster Herbicide & Tressel 250 SL Herbicide. A basal bark spray could also be applied using Access Herbicide. Access Herbice, Garlon Herbicide and Vigilant II gel Herbicide can be applied to cut stump applications. Alternatively, a mixture of Glyphosate and Metsulfuron 600WG could be used as a foliar spray or by stem injection. Note that these chemicals are 'off-label', so results may be mixed.

Ozcrop Metsulfuron 600WG Herbicide is not registered or recommended to control radiata pine.  If you choose to use Ozcrop Metsulfuron 'off-label' via the stem injection method, you can find tips and injection method instructions on product listings such as "Tordon RegrowthMaster Herbicide."  A few basic tips when stem injecting, for example, with a 3/8 drill bit or an axe, is to get the herbicide into the phloem tissue in the tree.  Once a hole or opening has been made, the herbicide must be injected as soon as possible before any sap can set.  On smaller trees (i.e. 10cm), 3 injection sites are recommended, and on larger trees (60cm), 14 injection sites are adequate.

Including a penetrant with Metsulfuron 600WG Herbicide will guarantee a much better kill, especially when spraying hard-to-kill, noxious woody weeds.  We also recommend the inclusion of a 3rd woody weed chemical in the mix, such as Grazon Extra or an equivalent to Grazon DS (Scrubba, Hatchet, Raizon etc.), for the best results.  The combination of triclopyr, picloram and metsulfuron is very potent and has provided successful results when spraying lantana for many years.

Do not use Metsulfuron Methyl 600WG Herbicide on Buffalo Turf (including Sir Walter).  Metsulfuron-Methyl targets and kills broadleaf species of plants.  Buffalo Grass is a broadleaf species, and severe damage & death would be expected. 

Metsulfuron-Methyl is not registered or recommended for use in Turf or Lawn situations.  Metsulfuron targets mainly broadleaf species of plants which also include most shrubs, trees, hedges, roses etc in your garden so spray drift or accidental application can cause problems.  It can also remain active in the soil for a period of time and cause damage or death to non-target plants.  We would recommend you consider using a selective herbicide registered for use in turf, such as Dicamba M Selective Herbicide, Fairway Herbicide or 24D Amine, 

The activity of Metsulfuron Methyl is dependant on several factors, including soil acidity, soil temperature & moisture, clay content, and, particularly, organic matter content.  Compared to other herbicides, the results from Metsulfuron Methyl may be slow to appear, and weeds may only appear to be stunted or suppressed.  Metsulfuron does remain active in the soil for some time.  The effects from Metsulfuron may not be seen for weeks rather than days.

Metsulfuron Methyl is not registered for use in Buffalo Turf.  Metsulfuron Methyl Herbicide is designed to kill broadleaf species of plants.  Buffalo Turf is also a broadleaf species so the application of metsulfuron will cause severe damage and most likely death of the turf.  If you are looking at removing broadleaf weeds I would suggest looking at herbicides that are registered for use in Buffalo Turf - Surefire Buffalo, Bindi & Broadleaf Weedkiller (https://bit.ly/Surefire-Buffalo)