Bayer CropScience is supplying its own proprietary liquid spray grade Ammonium Sulphate (AMS) to the western Canadian crop protection market. This product is being sold as a utility modifier for use with Infinity and Tundra herbicides.
Ammonium Sulphate utility modifier has a concentration of 400 g/L (40% solution). It should be added to Infinity or Tundra for control of cleavers greater than three whorls in size. The Infinity and Tundra labels state “For control of cleavers at the four to six whorl stage, add ammonium sulphate at 500 g/ha”. Thus, the application rate of Ammonium Sulphate utility modifier for use with Infinity or Tundra
herbicides is 1.25 L/ha (500 g/ha ÷ 400 g/L) or 0.5 L/ac.
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