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Funded Project
Funding Program: Working Groups
Project Title: Sunflower Pathology Working Group
Project Directors (PDs):
Samuel Markell [1]
Robert Harveson [2]
Charles Block [3]
Thomas Gulya [4]
Febina Mathew [5]
Sue Thompson [6]
Malcolm Ryley [7]
Lead State: ND

Lead Organization: North Dakota State University
Cooperating State(s): Iowa, Nebraska, South Dakota
Undesignated Funding: $20,000
Start Date: Mar-01-2019

End Date: Feb-29-2020
Pests Involved: pathogens/disease
Site/Commodity: Sunflower
Area of Emphasis: Disease identification and IPM
Summary: THE PROBLEM. Approximately 85-90% of the 2.0 M acres of sunflower planted annually in the U.S. are in the North Central States. According the National Sunflower Association, diseases are the most significant biological yield-limiting factor for sunflower production. Despite this, few pathologists work on sunflower and limited reference and Extension literature on sunflower diseases exist. Consequently, disease identification is challenging for growers and a near-total lack of IPM recommendations has resulted in a ‘spray and pray’ approach to disease management.
OUR APPROACH To address these problems, the Sunflower Pathology Working Group (SPWG) was established in 2013 with the specific mission of increasing IPM awareness by creating new academic reference and Extension materials. Our approach is deliberate, with stakeholder surveys and focus groups playing a crucial role. All activities are consistent with the mission of the North-Central IPM Center and designed to increase knowledge among stakeholders and collaboration among professionals, ultimately leading to positive economic and environmental impacts by limiting needless fungicide applications.
Major outputs to date include a Feature Article in the APS journal Plant Disease (in press), a ‘Diagnostic Guide’ in the APS journal Plant Health Progress (2018), an APS ‘Plant Disease Lesson’ (2018), a disease identification article in the National Sunflower Association Sunflower Magazine (2018), a press release and two associated newspaper articles (2018), the first American Phytopathological Society (APS) Compendium of Sunflower Diseases (2016), a 20-disease diagnostic card set (2015, rev. 2017), two disease chapters in major monographs/books (2015, 2018), a diagnostic card-deck (2016), additional manuscripts (Extension and academic) that are in various pre-publication stages (2019) and over a dozen funded grant proposals.
Four/seven members are from North Central states (consistent with the RFP). We have recruited experts from overseas to actively support the mission of the working group, including Sue Thompson (USQ, UQ) and Malcolm Ryley (UQ, AAPS fellow).
ANTICIPATED IMPACT. We believe the impacts of this material is very high, and use history as a guide. Additionally, we make a very concerted effort to publicly credit the NCIPM center for support. As very recent examples of credit and impact, the SPWG was highlighted in a press release by the University of Nebraska on 11/15/18; within days it was picked up by Crop Watch (published 11/15/18), on 11/18/18 will be published in Scottsbluff Star Herald (est. readership 20,000), anticipated to be published in Nebraska Farmer, and Bob Harveson had conducted three media interviews with local radio stations in Western Nebraska. Nationally, a section of the Plant Disease Feature article highlighted the role of the SPWG. Nationally and internationally, usage of the Extension material (diagnostic cards) is documented by a Chinese translation, and reproduction under ‘common use’ by at least one company. Similarly, Sunflower Compendium sales are at 353, very high for a small acreage field crop, and printings paid for by corporate partners.


Objectives: In 2019-2020, we propose to compose a Plant Health Progress ‘Diagnostic Guide’, two CABI data sheets, and a Plant Disease Lesson. We plan to continue to increase communication among pathologists working on sunflower. We plan to meet in person for a week (tentatively November in New Orleans) to plan, design, edit, complete and/or publish outputs. Outcomes will be measure and assessed through feedback from surveys at stakeholder meetings and surveys of the Great Plains Diagnostic Network diagnosticians.


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