Syngenta Introduces New Fungicide, Postiva, for Ornamentals

Syngenta’s Postiva is now available to ornamental growers for control of such diseases as Fusarium, leaf spots, Botrytis and powdery mildew.

Postiva is approved by the U.S. EPA for use in ornamental nurseries, greenhouses and residential and commercial landscapes, according to a news release from Syngenta.

Postiva is the first fungicide available to ornamental growers powered by Adepidyn, a next-generation succinate dehydrogenase inhibitor (SDHI), Syngenta said in the news release. Through a combination of Adepidyn and difenoconazole, a demethylation inhibitor (DMI) fungicide, in FRAC Groups 7 and 3, Postiva offers a strong defense against multiple pathogens while helping delay the development of resistance.

Postiva has also demonstrated strong activity against bacterial pathogens such as Pseudomonas spp. and Xanthomonas spp., broadening the spectrum of control for a complete plant protection treatment.

“When applied, Postiva rapidly establishes a rainfast barrier of protection, preventing infection and disease progression. To stop diseases from spreading, growers should apply Postiva prior to or at the first sign of disease symptoms,” said Nancy Rechcigl, technical services manager for ornamentals at Syngenta.

Postiva can be applied by spray, drench, chemigation or cold fogging to ornamentals, vegetable plants and non-bearing fruit and nut plants that are grown for retail sales.

Dean Mosdell, Ph.D., technical services manager for ornamentals at Syngenta, said that Postiva makes an excellent rotation partner to diversify disease control programs.