Disease Fungicides Leafy Vegetables

Ranman 400SC Fungicide Label Expanded via Minor Use Program for Suppression of White Rust on Spinach

J. Chaput, OMAFRA, Minor Use Coordinator, Guelph

The Pest Management Regulatory Agency (PMRA) recently announced the approval of an URMULE registration for RANMAN 400SC FUNGICIDE for suppression of white rust on spinach in Canada. White rust is a common disease of spinach in many areas of North America and has been increasing in prevalence in some parts of Canada in recent years. The active ingredient cyazofamid was already labeled on potatoes, cucurbits and carrots for several important diseases.

The minor use project for white rust of spinach was sponsored in 2009 by the minor use office of OMAFRA as a result of minor use priorities established by growers and extension personnel. The minor use label expansion for Ranman Fungicide is an important step towards developing an improved pest management toolkit for spinach in Canada.

The following is provided as a general outline only. Users should consult the complete label before using Ranman Fungicide.

Ranman Fungicide can be used for suppression of white rust on spinach at a rate of 0.15 – 0.2 L per ha in 300 – 500 L water per ha. Apply Ranman Fungicide on a 7 day schedule beginning when disease if first seen or when conditions favour disease development.

Do not apply more than 5 times per year and do not apply within 1 day of harvest for spinach.

Ranman Fungicide should be used in an integrated pest management program and in rotation with other management strategies to adequately manage resistance.

Follow all other precautions and directions for use on the Ranman Fungicide label carefully.

We wish to acknowledge the personnel of ISK Biosciences Corporation for their support of this registration and the personnel of the Pest Management Regulatory Agency for evaluating and approving this important pest management tool.

For a copy of the new minor use label contact Marion Paibomesai, OMAFRA, Guelph (519) 826-4963 or Jim Chaput, OMAFRA, Guelph (519) 826-3539 or visit http://www.bartlett.ca/bartlett/default.htm or http://www.uap.ca/.

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