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Robust control across varying planting conditions with BOXER GOLD

Broadacre
01.11.2016

The introduction of BOXER GOLD® (Prosulfocarb + S-Metolachlor) to the Australian broadacre market represented the first alternative mode of action for control of Trifluralin resistant ryegrass populations in cereals and offered a solution for resistance management in pre-emergent weed control programs.

BOXER GOLD continues to provide a reliable and flexible solution for controlling annual ryegrass for growers across Australia.

The addition of S-Metolachlor to Prosulfocarb in BOXER GOLD also provides some useful benefits when moisture conditions at seeding are marginal. Two major contributing factors to a product's availability and performance when applied pre-emergent is its solubility and strength of binding to soil and organic matter.

Herbicides with low solubility generally require very good levels of soil moisture or larger volumes of rain post application to achieve good levels of incorporation and remain in soil water solution for uptake by germinating weeds. Herbicides with higher levels of solubility require lesser amounts of rainfall and are generally more plant available in conditions of lower soil moisture. S-Metolachlor is considered to have a moderate solubility at 480mg/L, being more soluble than either Prosulfocarb (13mg/L) or Pyroxasulfone / Sakura (3.5mg/L).

The rainfall requirements for incorporation and adsorption of BOXER GOLD after application are generally less than Sakura. This allows BOXER GOLD to be activated and taken up by emerging weed seeds sooner compared to Sakura in the same situation, providing better early weed control. Given climatic conditions around seeding are often hard to predict, growers might manage their production risk and subsequent weed control by selecting more than one single herbicide for their pre-emergent program and using the most appropriate product based on a paddock by paddock situation. This approach allows consideration of not only specific product attributes but also other factors such as differences in soil types, stubble loads, weed pressure and rotational plans with the aim of achieving the best solution for a given situation.

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