University of Georgia

A website from the College of Agricultural and Environmental Sciences

Alternaria Brassicicola Research Project

Enhancing resiliency of broccoli production by mitigating Alternaria leaf blight and head rot in the eastern United States

Publications

Journal Articles Published:-

  • Davis II, R. L., Hoidal, N., and Everhart, S. E. 2025. Characterization of structure and diversity of Alternaria brassicicola populations within and between fields in Connecticut, Massachusetts, and Georgia. (Under Review in Phytopathology)
  • Kaur, N., Malik, A.A., Cerritos-Garcia, D.G., Bach, R.A.K., Everhart, S., and Dutta, B. 2025. Cross-resistance in Alternaria brassicicola from naturally infested broccoli seeds against two succinate dehydrogenase inhibitor fungicides. Applied and Environmental Microbiology https://doi.org/10.1128/aem.01083-25
  • Davis, R., Cerritos-Garcia, D. G., Martin, A. G., Fenton, M. F., Patel, K., Nieto-Lopez, E., Saint-Preux, C., Betaw, H., Hoepting, C., Rideout, S., Langston, D., Smart, C.D., Dutta, B., Everhart, S.E. 2025. Determining the causal agents of Alternaria leaf blight and head rot affecting broccoli in the Eastern United States. Plant Disease (in press).
  • Gangurde, S. S., Kaur, N., Guo, B. & Dutta, B. 2025. Leaf epicuticular wax and hormone‐mediated resistance to Alternaria brassicicola in broccoli. Physiologia Plantarum 177, e70172 .
  • Kaur, N. & Dutta, B. 2024. Aggressive alternaria brassicicola with reduced fungicide sensitivity can be associated with naturally infested broccoli seeds. Plant Disease 108, 2154–2161.
  • Kaur, N. & Dutta, B. 2024. Characterization of seed-to-seedling transmission of alternaria brassicicola in broccoli. Plant Disease 108, 2046–2052.
  • Cassity-Duffey, K., Coolong, T., Dutta, B. & McAvoy, T. 2024. Assessing broccoli cultivar susceptibility to Alternaria brassicicola in Georgia. Plant Health Progress 25, 484–491.
  • Nieto-Lopez, E. H. et al. 2023. Species Identification and Fungicide Sensitivity of Fungi Causing Alternaria Leaf Blight and Head Rot in Cole Crops in the Eastern United States. Plant Disease 107, 1310–1315.

Plant Disease Management Reports (PDMR) Published :-

  • Kaur, N., Donahoo, M., Foster, M.J., and Dutta, B. 2025. Evaluation of fungicide programs for the management of Alternaria leaf blight and head rot in broccoli in Tift County, Georgia, 2023-24. Plant Health Progress (accepted)
  • Kaur, N., Donahoo, M., Foster, M.J., and Dutta, B. 2025. Evaluation of fungicide programs for the management of Alternaria leaf blight and head rot in broccoli in Tift County, Georgia, 2024-25. Plant Health Progress (in press)
  • Hoepting, C. A., Mertson, S.L., Schultz, D., and Caldwell, S. K. 2023. Evaluation of organic and conventional fungicides for control of Alternaria leaf spot and head rot in broccoli, Geneva, NY, 2023. 18:V117
  • Higgins, D. S., Adams, C. M., and Fletcher, A. L. 2023. Evaluation of broccoli cultivar response to Alternaria leaf blight and head rot, 2023. 18:V072
  • Higgins, D. S., Adams, C. M., and Fletcher, A. L. 2023. Evaluation of DMI fungicides for control of Alternaria leaf blight and head rot in broccoli, 2023. 18:V071
  • Dutta, B. and Foster, M. J. 2022. Evaluation of organic fungicides for the management of Alternaria leaf blight and head rot in broccoli in Tift County, Georgia, 2022. 17:V134.
  • Dutta, B. and Foster, M. J. 2022. Evaluation of conventional fungicides for the management of Alternaria leaf blight and head rot in broccoli in Tift County, Georgia, 2022. 17:V135.
  • Cassity-Duffey, K, Coolong, T., and Dutta, B. 2022. Evaluation of the effect of timing of simulated leaf wetness on disease severity in Alternaria leaf blight and head rot in broccoli, Oconee County, GA 2021. Plant Disease Management Report. 16:V153.
  • Hoepting, C. A., Caldwell, S. K. 2022. Evaluation of organic and conventional fungicides for control of Alternaria leaf spot in broccoli in Geneva, NY, 2022. 17:V139.
  • Kaur, N., and Dutta, B. 2022. Evaluation of fungicide programs for the management of Alternaria leaf blight and head rot in broccoli in Tift County, Georgia, 2021. PDMR 16:V169.
  • Dutta, B., and Kaur, N. 2022. Evaluation of organic fungicides for the management of Alternaria leaf blight and head rot in broccoli in Tift County, Georgia, 2021. PDMR 16:V130.
  • Hoepting, C. A., Caldwell, S. K., and van der Heide., E. R. 2021. Evaluation of select fungicides for control of Alternaria leaf spot and head rot in broccoli, 2021. 16:V175.

Press Release Articles:-

Newsletters/Extension Bulletins:-

  • Fonsah, E.G., Dutta, B., Da Silva, A., Coolong, T., and Sparks, A. 2024.An Economic Production Guide for Vegetable Growers, Agents and Specialists in Georgia University of Georgia Cooperative Extension Bulletin AGECON-10-10PR.
  • Coolong, T., Sparks, S., and Dutta, B. 2024. Fresh Market Broccoli Production in Georgia. University of Georgia Cooperative Extension Bulletin B1460. 
  • Kaur N and Dutta B. 2025 Aggressive Alternaria brassicicola with reduced fungicide sensitivity can be associated with naturally infested broccoli seeds. UGA IPM Newsletter. Vol. 9, Issue 2. https://ipm.uga.edu/2025/03/29/
  • Gangurde, S, Kaur, N, Dutta, B. 2024. Leaf epicuticular wax mediated resistance against Alternaria brassicicola in broccoli. UGA Cooperative Extension Annual Publication 113-6. https://extension.uga.edu/publications/detail.html?number=AP113-6.
  • Control Alt Delete: Enhancing Resiliency of Broccoli Production by Mitigating Alternaria Leaf Blight and Head Rot in the Eastern United States-Major Findings and Impact