Physical Description
Contains 40g/litre of Nicosulfuron in the form of an oil dispersion.
Chemical Group
Sulfonylurea urea
Uses
Guardian is used post crop emergence for the control of perennial and annual grasses and certain broadleaf weeds in maize grain and silage.
Benefits
Guardian provides superior control of many hard to kill annual and perennial grass species in maize as well as some broadleaf weeds such as triazine and dicamba resistant Fathen. Can be readily mixed with many other post emergence herbicides commonly used in maize crops such as Ravensdown Atrazine 90 DF and Dicam 480.
Application
Apply Guardian evenly to the weed canopy using ground based spray equipment at a minimum water rate of 200L/ha. Position the boom nozzles between the rows of maize for direct coverage of weeds. The use of nozzles on droppers from the boom will improve target weed coverage. For best results Guardian should be applied before weeds have reached the 4 true leaf stage. Weeds past the 4 true leaf stage may only be suppressed. The maize crop growth stage best for application is between 2 and 8 leaf stage when the crop is growing vigorously without moisture stress. Applications to maize plants greater than 500mm in height risk crop injury.
Mode of Action
Guardian is rapidly absorbed by foliage and translocated throughout weeds. This stops the synthesis of vital plant growth chemicals. Weeds stop growing immediately and discolouration of leaves occurs, followed by dieback that spreads slowly throughout the weed.
Environmental Fate
Guardian residuals can persist in the soil for up to 5 months depending on soil conditions and rainfall conditions.
Withholding Period
For silage maize, 56 days.
Storage and Handling
Transporter will require a Dangerous goods licence to collect this product
Store Guardian in tightly sealed, original container, out of reach of children in accordance with NZS 8409 Management of Agrochemicals.
Avoid contact with skin and eyes. Avoid inhalation of spray mist. When handling wear protective clothing such as gloves, eye protection, overalls and boots
Rainfall
Guardian is rainfast 6 hours after application. Rainfall within this time may affect results.
Additional Information
Benefit adjuvant is required in many situations to be added when using Guardian. Benefit should be applied at 500ml per 100litres of water. Refer to Guardian label.
For Further Information
Click to view the Guardian Front Label
Click to view the Guardian booklet label
Click to view the Guardian MSDS (Material Safety Data Sheet)
Registered pursuant to the ACVM Act 1997, P007927