Ronstar 2G - Granular Herbicide

Ronstar 2G is a granular herbicide containing the active ingredient oxadiazon. Ronstar 2G controls annual broad leaf weeds and grasses.

Ronstar 2G is formulated as a granule to give pre-emergence residual control of the weeds, while
offering outstanding levels of crop safety.

Now with specific off-label approval for ornamental shrub beds (20102995)

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How Ronstar Works and How to Use It

How Ronstar 2G Works
Ronstar 2G granules, when applied to moist soil, dissolve, forming an invisible herbicide barrier. As weed seeds germinate and grow through the soil surface, they pick up the herbicide through the shoots and die. Weed control using Ronstar 2G should be effective for up to 3 months.

There is no uptake by the roots and it is this property of Ronstar 2G that ensures safety to the plant.

How to Use Ronstar 2G
Application rate is 1kg per 100m maximum individual rate. The total dose is 1.5kg per 100m (equivalent to 150kg per Ha).

Ensure no granules have lodged in the foliage, as this could result in scorch. Apply the granules, at half rate in opposite directions, to ensure good coverage.

Like all residual herbicides, soil moisture is essential to ensure that Ronstar 2G can be taken up by the weed seedlings as they grow.

Ensure the soil surface is left undisturbed after application to maintain the residual barrier effects of Ronstar 2G. Do not mix the granules into the soil.

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Weeds Controlled

Crop Tolerance

KEY: T = Tolerant, MS = Moderately Susceptible, S = Susceptible.

Do not treat Hydrangea, Spirea or Genista pilosa. Other species not listed should be treated in small numbers in order to evaluate crop safety before applying RONSTAR 2G granules on a large scale.