LIBERTYVILLE, Ill.--(BUSINESS WIRE)--Valent BioSciences Corporation today announced that the Chilean registration authorities, Servicio Agricola y Ganadero, have approved ProTone SL™ Plant Growth Regulator for enhancing color development in red table grapes. This represents the first registration of abscisic acid (S-ABA), a new active ingredient, which has numerous potential crop quality and stress management applications. This approval comes after several years of successful field-testing
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