Fusarium Wilt: A New Threat to Florida Lettuce Production
Pink-brown taproot discoloration caused by Fusarium oxysporum f.sp. lactucae (A). Iceberg field in the Everglades Agricultural Area (EAA) colonized by a wilting disease in the 2017– 2018 season identified as Fusarium wilt of lettuce (B). Credits: Germán Sandoya, UF/IFAS
view on EDIS

How to Cite

Sandoya, German, Jesse Murray, Richard Raid, and Christian Miller. 2020. “Fusarium Wilt: A New Threat to Florida Lettuce Production”. EDIS 2020 (5). https://doi.org/10.32473/edis-hs1385-2020.


Fusarium wilt of lettuce is a disease caused by the fungus Fusarium oxysporum f.sp. lactucae. The disease is present in all lettuce production areas worldwide. Recently this disease has been identified in Florida in localized fields. This new 4-page publication of the UF/IFAS Horticultural Sciences Department presents information about the disease, symptoms, and control measures useful to lettuce growers in Florida. Following these recommendations may help to avoid the spread of this fungus in muck soils at the Everglades Agricultural Area (EAA), where 90% of the lettuce in Florida is planted. Written by Germán V. Sandoya, Jesse J. Murray, Richard N. Raid, and Christian F. Miller.

view on EDIS


Cabral, C., Brunelli, K., Costa, H., Fonseca, M. E., S. Boiteux, L.Reis, A. 2014. Identification of Fusarium oxysporum f. sp. lactucae race 1 as the causal agent of lettuce wilt in Brazil. Tropical Plant Pathology, 39, 197-202. https://doi.org/10.1590/S1982-56762014000300002

Fang, X., You, M. P., Barbetti, M. J. 2012. Reduced severity and impact of Fusarium wilt on strawberry by manipulation of soil pH, soil organic amendments and crop rotation. European Journal of Plant Pathology, 134, 619-629. https://doi.org/10.1007/s10658-012-0042-1

Gordon, T., Koike, S. 2015. Management of Fusarium wilt of lettuce. In W. Elmer (Ed). Ecology and management of Fusarium diseases. Crop Protection, 73, 45 - 49. https://doi.org/10.1016/j.cropro.2015.01.011

Matheron, M.E., Porchas, M. 2015. Effect of lettuce cultivars and actigard on development of Fusarium wilt, 2015. Plant Disease Management Report 10: V104. https://doi.org/10.1094/PDMR09

Matheron, M.E., Porchas, M. 2018. Examination of lettuce varieties for resistance to Fusarium wilt, 2018. Plant Disease Management Report 13: V143.

Matheron, M.E., Pryor, B.M., Porchas, M. 2016. Evaluation of lettuce varieties for resistance to Fusarium wilt, 2016. Plant Disease Management Report 11: V124. Online publication. doi: 10.1094/PDMR10

Matheron, M.E., Pryor, B.M., Porchas, M. 2017. Comparison of lettuce varieties for resistance to Fusarium wilt, 2017. Plant Disease Management Report 12: V134. Online publication. doi: 10.1094/PDMR11

Murray, J., Raid, R.N., Miller, C.F., and Sandoya, G. 2020. First report of Fusarium oxysporum f. sp. lactucae causing vascular wilt of lettuce in Florida. Plant Disease https://doi.org/10.1094/PDIS-12-19-2625-PDN

Shimazu, J., Yamauchi, N., Hibi, T., Satou, M., Horiuchi, S., and Shirakawa, T. 2005. Development of sequence tagged site markers to identify races of Fusarium oxysporum f. sp. lactucae. Journal of General Plant Pathology, 71,183-189. https://doi.org/10.1007/s10327-005-0183-6

Short, D. P. G., Sandoya G., Vallad G. E., Koike S. T., Xiao C. L., Wu B. M., Gurung S., Hayes R. J. , Subbarao K. V. 2015. Dynamics of Verticillium Species Microsclerotia in Field Soils in Response to Fumigation, Cropping Patterns, and Flooding. Phytopathology, 105, 638-645. https://doi.org/10.1094/PHYTO-09-14-0259-R

Copyright (c) 2020 UF/IFAS