MCPA 750 Selective Herbicide

Sir Walter Buffalo grass is likely susceptible to MCPA 750 Selective Herbicide as it is a broadleaf plant species. However, the product label does not indicate if the Agapanthus may also be vulnerable. An off-label trial would need to be undertaken at your own risk to test the suitability of MCPA for this use.

MCPA is generally considered safe when used according to label instructions. However, it is important to take precautions when using any herbicide around wildlife, livestock and pets. It is advisable to avoid applying the herbicide when livestock or pets are in the vicinity, especially during grazing periods or when they have direct access to treated areas. Only allow re-entry to the area after the spray has dried if possible.

MCPA 750 Selective Herbicide is a selective herbicide for the control of various broadleaf weeds in established turf. Since Nara Native Turf (Zoysia) & Tall Fescue are types of grass (not broadleaf), it should be safe to use MCPA 750 Selective Herbicide as long as it is used according to the instructions.

MCPA 750 Selective Herbicide is a selective herbicide for the control of broadleaf weeds, not grasses.  It will not have any effect on summer grass but will target Sir Walter as it is a broadleaf species.  We do not recommend using MCPA 750 Selective Herbicide for this purpose.  We suggest you consider either a post-emergent spray such as Metric Herbicide or a pre-emergent treatment such as Barricade Herbicide, Spratan Herbicide, Oxafert Herbicide, Ronstar Herbicide, Freehand Herbicide or OnSet 10GR Herbicide.

Spraying Glyphosate (Roundup) & MCPA either in a tank mix together or immediately after each other is fine.  MCPA 750  is a selective herbicide for controlling many broadleaf weeds in established pastures, grass playing fields and lawns, and in cereals, grass seed and linseed crops, but it is only registered to control spiny emex in cropping situations.  Dicamba M Selective herbicide is registered to control spiny emex in domestic situations as a spot spray for seedlings only, rate 12.5 mL/ 10 L water (APVMA permit PER11463.)

Selective broadleaf herbicides can be applied to Ryegrass Turf to remove the weeds without damaging the grass.  We recommend turf-specific selective herbicides such as Kamba M Herbicide or Surefire Buffalo, Bindi & Broadleaf Weedkiller as the better options to consider. 

Although clover is not listed as a plant that MCPA 750 Selective Herbicide is registered to control, it is likely to damage or kill clover in certain situations or when used at specific rates.  Careful attention must be paid to the directions of use label and the critical comments for each application to see if clover is at risk when MCPA is applied.

MCPA 750 Selective Herbicide is not registered for the control of Lantana. Other selective herbicides for the control of woody weeds which you may want to consider that are registered for lantana are as follows: Hatchet Herbicide, Lantana 600 Herbicide, Grazon Extra, and Garlon 600 Herbicide.  Always read 'directions for use' carefully before use.

MCPA 750 Selective Herbicide is a selective Herbicide that targets broadleaf weeds.  Paspalum is grass, not broadleaf, so MCPA 750 Selective Herbicide will not have control over it.

Soil microorganisms rapidly degrade MCPA and its formulations. It has low persistence, with a reported field half-life of 14 days to 1 month, depending on soil moisture and soil organic matter. The more organic matter, the more slowly things tend to move. Compost is high in organic matter, while sand is not. Different soil types have different water-penetration rates. The pesticide’s ability to dissolve in water is also crucial.

MPCA 750 does not have any Export Slaughter Interval (ESI) or Trade Advice listed on the products label or with the APVMA. 

MCPA 750 has a withholding period (WHP) for cereals & pastures not graze or cut for stock food for 7 days after application.  A Harvest withholding period is not required when used as directed.

Our interpretation is that there is not an ESI applicable when used as directed, however, if you are exporting products or produce that may be affected by this you should always check with the APVMA (Gov't Pesticide Regulator) as this information may have changed.  The APVMA can be contacted on Phone: 02 6770 2300 or [email protected]

This information and product advice is not intended to be advice or recommendations for any specific use or circumstance.  You should seek specialist advice before using any product. Always follow the manufacturer’s guidelines. Specialist Sales liability is limited.​