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Australia to approve Bayer’s Serenade Opti biofungicideqrcode

Dec. 14, 2017

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Dec. 14, 2017
The APVMA is considering an application for the registration of Serenade Opti Biofungicide containing the new active constituent, Bacillus amyloliquefaciens strain QST 713. 
 
Serenade Opti Biofungicide is a biological fungicide intended for use as a preventative treatment in the control of botrytis bunch rot in grapevines. It is applied at a rate of 250 g/100 L with applications made at flowering, pre bunch closure and veraison through to harvest.
 
The bacterium, B. amyloliquefaciens, is prevalent in soils and has been found in a variety of habitats worldwide. The QST 713 strain of B. amyloliquefaciens is known to be antagonistic toward fungal plant pathogens. This antagonism may be achieved in several ways including nutrient competition, site exclusion, colonisation, and attachment of the bacteria to the fungal pathogen. The Fungicide Resistance Action Committee (FRAC), has designated B. amyloliquefaciens strain QST 713 (synonym B. subtilis strain QST 713) as a Group 44 fungicide, the mode of action has been defined as being a microbial disrupter of pathogen cell membranes.

 
Source: AgroNews

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