Australia to approve Bayer CropScience's Routine 200 SC Fungicide

The Australian Pesticides and Veterinary Medicines Authority (APVMA) has proposed to approve Bayer CropScience's Routine 200 SC Fungicide, a suspension concentrate formulation containing 200 g/L of the new active constituent, isotianil.

Isotianil is a systemic fungicide, belonging to the chemical class of thiadiazole carboxamide that activates the plant’s defence mechanisms against a wide range of fungal and bacterial pathogens. As a plant activator, isotianil does not exhibit antimicrobial activity directly against the pathogenic microorganisms; instead, it induces systemic acquired resistance in the host plant.

The proposed product Routine 200 SC Fungicide is intended for use in bananas for the control of yellow sigatoka (Mycosphaerella musicola) and common leaf speckle (Mycospharella musae). The product Routine 200 SC Fungicide will be manufactured in Australia, Germany, Korea, France, Guatemala, and the USA.

The APVMA Chemistry section has evaluated the chemistry of the active constituent isotianil and associated product Routine 200 SC Fungicide including the manufacturing process, quality control procedures, stability, batch analysis results, and analytical methods, and found them to be acceptable.  Based on a review of the chemistry and manufacturing details, the registration of Routine 200 SC Fungicide, and approval of the active constituent isotianil, are supported from a chemistry perspective.

The APVMA invites comment from 15 February 2022 to 15 March 2022 on whether approval of the active constituent and registration of the product should be granted.