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Posted 25 October 2011. PMN Crop News.

Presidio Fungicide Registered for Drip Irrigation in California Vegetables

New registration brings excellent disease control to even more brassica, cucurbit, fruiting and leafy crop growers

Source: Valent U.S.A. Press Release.

Walnut Creek, California (September 28, 2011)--Valent U.S.A. Corporation has received registration for drip applications of Presidio® Fungicide on brassica, cucurbits, and fruiting and leafy vegetables in California.


This new registered use gives California vegetable growers the ability to effectively prevent or control downy mildew and Phytophthora blight (caused by P. capsici) even earlier in the season. Growers who use Presidio through drip irrigation gain the advantage of an effective new class of chemistry and another method of application to protect their vegetable crops.

“Presidio is highly active on even fungicide-resistant Oomycete pathogens, giving growers a powerful tool to incorporate into their disease management programs,” said Gerald Holmes, Valent product development manager.

The new drip irrigation application also gives growers better control of soil-borne diseases, because Presidio translocates through the plant for complete protection.

“By putting Presidio in drip irrigation, you put it right where it needs to be for soil-borne diseases that affect the root and the crown,” Holmes said. “Because Presidio has great systemic activity, it can translocate through the plant—protecting the roots and aboveground plant parts as well.”

Unlike other fungicide products, Presidio has no known tank mix limitations with other fungicides or insecticides. Presidio can also be applied via sprinkler or used as a foliar treatment.

“With a variety of application options, a novel mode of action, outstanding efficacy and MRLs now in place in Canada, Presidio is an excellent tool for growers,” Holmes said.

For more information on Presidio, please visit