For the grape and small fruit markets, it will be marketed as Tavano 5%SC, according to a news release.
In citrus, cucurbits, fruiting and leafy vegetables, potatoes and other crops, it will be called Oxo 5%SC.
Both have been registered for use by the U.S. Environmental Protection Agency.
A petition is pending with the national Organic Program for use in organic production.
The new formulation is the result of an agreement between Certis and Kaken Pharmaceutical Co. Ltd. of Tokyo, Japan.
Polyoxin D zinc salt provides broad-spectrum control against several diseases, including Alternaria leaf blight and early blight, Botrytis and powdery mildew.
The original formulation was registered in late 2008.
Polyoxin D zinc salt is made through fermenting a naturally occurring microbe, Stroptomyces cacaoi var. asoensis, which was isolated from soil in Japan.
The product works on pathogenic fungi by inhibiting the formation of chitin, which is critical in cell wall structures.
Polyoxin D zinc salt belongs to the Fungicide Resistance Action Committee group 19.