By Potatoes in Canada
Jan. 27, 2016, Canada – Syngenta Canada Inc. has launched Orondis Ultra, a new fungicide for the control of oomycete diseases caused by downy mildews and Phytophthora species in potatoes and vegetables.
Orondis Ultra is a combination of the newly registered active ingredient, oxathiapiprolin, which belongs to the piperidinyl-thiazole-isoxazolines (Group U15) class of fungicides, and mandipropamid (Group 40).
In field trials, oxathiapiprolin has demonstrated excellent preventative and residual control at low use rates. Other benefits of oxathiapiprolin include no known cross-resistance to other fungicides and excellent rainfastness.
Orondis Ultra aims to deliver translaminar and acropetal activity, moving across the leaf surface, as well as upwards into new growth via the plant’s water-conducting vessels. Both modes of action work in tandem to protect the growing canopy, protecting plants during periods of active growth.
Applied preventatively in potatoes, Orondis Ultra delivers 21 days of residual late blight control, according to a press release. Late blight, caused by the oomycete Phytophthora infestans, is the single most damaging potato disease. The strong late blight control provided by Orondis Ultra allows growers to increase fungicide spray intervals and potentially reduce the overall number of fungicide applications targeting late blight.
In addition to potatoes, Orondis Ultra can be used on head and stem brassica vegetables including broccoli and cabbage, bulb vegetables, such as onion and garlic, leafy vegetables, such as arugula and celery, and cucurbit vegetables, including cucumber and squash. See the Orondis UItra label for a complete list of crops and diseases.
Orondis Ultra will be available for sale in spring 2016.