Challenges and prospects for building resilient disease management strategies and tactics for the New York table beet industry

Authors: PETHYBRIDGE, SARAH - Cornell University; KIKKERT, JULIE - Cornell University; Hanson, Linda; NELSON, SCOT - University Of Hawaii

Submitted to: Agronomy
Publication Type: Review Article
Publication Acceptance Date: 7/2/2018
Publication Date: 7/4/2018
Citation: Pethybridge, S.J., Kikkert, J.R., Hanson, L.E., Nelson, S.C. 2018. Challenges and prospects for building resilient disease management strategies and tactics for the New York table beet industry. Agronomy. 8:112. https://doi.org/10.3390/agronomy8070112.
DOI: https://doi.org/10.3390/agronomy8070112

Interpretive Summary:

Technical Abstract: The New York table beet industry is expanding and has unique challenges to minimize crop loss in both conventional and organic production. Diseases may reduce plant population density and increase heterogeneity in a stand, reduce the duration of time foliage is healthy, and decrease the yield of marketable roots. Rhizoctonia solani and Pythium ultimum are dominant in the pathogen complex affecting crop stand and root health. Cercospora leaf spot caused by the fungus, Cercospora beticola, is a highly destructive disease affecting foliar health. In conventional table beet production, fungicides are applied in-furrow and at emergence for early season and root disease control, and applied to foliage periodically thereafter for foliar disease control. Resistance within C. beticola populations to single-site mode-of-action fungicides poses the most significant threat to the resilience of conventional disease management. An integrated approach to reduce pesticide application when not economically warranted (i.e. a false positive) is urgently required. For foliar disease, improved scheduling of fungicides may reduce usage without loss of disease control. For soil-borne diseases, pre-plant quantification of soilborne inoculum may support the selection of fields with lower inoculum densities to minimize risk of early season and root disease. For organic production, some OMRI-registered products have moderate efficacy for foliar disease control, but strategies to reduce inoculum and select fields at lowest risk of disease will be paramount. Crop rotation has shown promise for disease management, but host range of several of the major soilborne pathogens limits the utility of this method in the production region.