New Product Registered for Ginseng: Scholar 230 SC Fungicide

By: J. Chaput, OMAFRA, Minor Use Coordinator, Guelph

The Pest Management Regulatory Agency (PMRA) recently announced the approval of a minor use registration for SCHOLAR® 230SC Fungicide (fludioxonil) for control of diseases caused by Rhizoctonia, Botrytis and Alternaria and suppression of Cylindrocarpon on ginseng in Canada. SCHOLAR® 230SC was already registered on pome fruit, stone fruit and sweet potatoes for control of a number of important diseases.

Rhizoctonia, Cylindrocarpon, Botrytis and Alternaria are some of the most common, damaging diseases of ginseng in North America and have been the subject of much research and registration activity. The registration of SCHOLAR® 230SC is an important step towards improving the pest management toolkit for ginseng.

This minor use label expansion project was initiated in 2004 as a joint project between Agriculture & Agri-Food Canada, Pest Management Centre (AAFC-PMC) and the U.S. IR-4 in response to minor use priorities identified by producers and extension personnel in both countries. The following is provided as an abbreviated, general outline only. Users should consult the complete label before using SCHOLAR® fungicide.

For labelled diseases of ginseng SCHOLAR® 230SC can be applied at a rate of 0.6 – 1.2 L per hectare in sufficient water to ensure thorough coverage and/or penetration into the root zone. Up to 3 applications per season can be applied at a 14 – 21 day interval. Do not apply within 14 days of harvest of ginseng.

Follow all other precautions and directions for use on the SCHOLAR® 230SC fungicide label carefully.

SCHOLAR® 230SC should be used in an IPM program and in rotation with other management strategies to adequately manage resistance. SCHOLAR® fungicide has the same active ingredient (fludioxonil) as one of the components of SWITCH 62.5 WG (fludioxonil + cyprodinil), and therefore, additional rotational products should be included between applications of SCHOLAR and SWITCH.

We wish to acknowledge the personnel of the former AAFC Delhi Research station whose work was critical to securing the necessary data to support this registration. We also wish to acknowledge the personnel Syngenta Crop Protection Canada 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 copies of the new minor use label contact Sean Westerveld, OMAFRA Ginseng & Medicinal Herbs Specialist, Simcoe (519) 426-4323, Marvin Karges, OGGA, Simcoe (519) 426-7046, Jim Chaput, OMAFRA, Guelph (519) 826-3539 or visit

About Sean Westerveld

Ginseng and Medicinal Herbs Specialist, OMAFRA
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