Please contact our Customer Centre for pricing information 0800 100 123

Product Description

Please call the customer centre on 0800 100 123 for alternative options.

Why Use Guardian Plus - Discontinued

  • ​Post-emergence herbicide for grass & broadleaf weed control in maize.
  • Controls atrazine & dicamba resistant fathen.
  • Ideal for control of problem summer grasses and broadleaf weeds.


​Nicosulfuron 40g/litre

Regulatory Information

  • Registered pursuant to the ACVM Act 1997, No P7927
  • EPA approval No HSR000237
  • Agrecovery

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To order this product contact the customer centre and place your order.

0800 100 123


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Product Sizes available

  • 10 L

Delivery Options

  • Freight to farm
  • Ravensdown pickup point

Important Information


    ​Post-emergence herbicide for annual and perennial grass weed and broadleaf weed control in maize.

    Controls fathen that may be resistant to atrazine and dicamba.

    Already contains a surfactant system and does NOT require any additional surfactant to be added to the spray solution.

    Guardian Plus provides superior control of many hard to kill annual and perennial grass weeds in maize as well as some broadleaf weeds such as triazine and dicamba resistant fathen. Guardian Plus is compatible in a tank mixtures with atrazine ie Ravensdown Atratec or Atraflo.


    Broadleaf Weeds: For best results, Guardian Plus should be applied before weeds have reached the 4 true leaf stage, (75 to 100mm). Weeds larger than 4 true leaves may only be suppressed.

    Grass Weeds: Apply when there is sufficient leaf area for good uptake but before the grass has formed a thick layer. Apply to summer grass at a maximum of three tillers or 75mm in length.

    Apply evenly to the weed canopy using ground based spray equipment at a minimum water rate per hectare of 200 litres. Position the boom nozzles between the rows of the maize for direct coverage of weeds. The use of nozzles on droppers from the boom will improve target weed coverage. Donot apply Guardian Plus into the maize whorls as crop damage may occur.

    Applications to maize crops greater than 500mm risks crop injury. To avoid injury Guardian Plus is best applied from 2nd leaf through until the 8th leaf stage of the maize, when the crop is growing vigorously without moisture stress.


    Guardian Plus is rapidly absorbed by foliage and translocated throughout the weed. This stops the synthesis of vital plant growth chemicals. Weeds stop growing immediately and discoloration of leaves occurs, followed by dieback that spreads slowly throughout the weed.


    2 x 10L packs per Outer (box).


    • Keep out of reach of children.
    • Store in accordance with NZS 8409 Management of Agrichemicals.
    • Store in original container tightly closed in a locked, dry, cool, well ventilated area away from foodstuffs, fertilizers and seeds.

    Please refer to the product label for product handling and storage details.


    When stored appropriately this product should show no significant degradation for two years from the date of manufacture. Please contact your Ravensdown Account Manager, or the Customer Centre on 0800 100 123, for further information about the use of any product that is older than this.


    • Prior to mixing Guardian Plus, thoroughly rinse sprayer, tank, booms, hoses, and nozzles with water.
    • Shake container well before pouring.
    • Pour Guardian Plus into the spray tank half filled with water, and add the remainder of the water while agitating.
    • If adding other post-emergence herbicides, add after Guardian Plus is thoroughly mixed in the half filled tank.

    Apply the spray mix within 24 hours of mixing. Guardian Plus is compatible in tank mixtures with atrazine - Ravensdown Atratec and Atraflo. Do nottank mix with products containing mesotrione.


    Guardian Plus already contains a surfactant system, do not add any additional surfactant.