Growers can now use Certis USA’s polyoxin D zinc salt fungicide OSO on organic acreage, thanks to the bio-pesticide’s recent listing by the Organic Materials Review Board (OMRI).
Introduced by Certis USA in 2012, OSO is a broad-spectrum fungicide used to control diseases such as powdery mildew, Botrytis blight, black scurf, early blight and late blight.
Currently approved for use in all states on a variety of crops, including potatoes, OSO has a zero-day pre-harvest interval.
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