Determining the Distribution of Foliar Diseases and Fungicide Resistance in Indiana to Identify Best Management Options for Improved Disease Control in Soybean
Foliar and stem diseases have been problematic in Indiana soybean fields in recent years and wet conditions during the 2018 season led to increased problems with pod and seed quality. Successful disease management first starts with proper identification of the disease and then using variety resistance when available. Foliar fungicides can provide good disease control if targeted properly for each specific disease. A number of factors can contribute to reduced fungicide effectiveness and loss of disease control and include: 1) Inaccurate diagnosis and fungicide selection; 2) Applying at an improper rate, coverage, or timing; 3) Environmental conditions; and 4) Resistance development and weak mode of action on pathogen population. Frogeye leaf spot resistance to QoI fungicides has been reported in four counties in Indiana (Zhang et al., 2018). In order to prescribe proper management options for farmers it is important to determine the distribution of fungicide resistance in Indiana. We propose two objectives that will proactively continue research on gaining a better understanding of soybean disease distribution and management in Indiana: 1) Continue to document and confirm the distribution of soybean foliar diseases and fungicide resistance, and 2) Field evaluation of integrated management options for soybean foliar disease in Indiana.
The ultimate goal of this research is to understand the distribution of foliar and stem diseases and fungicide resistance in Indiana and then identify new options that may improve foliar disease control, yield, and seed quality. These results will be used to provide unbiased information to Indiana farms about when and where fungicide treatments will improve disease control and seed quality.
Publications:
Kandel, Y. R., Hunt, C. L., Ames, K. A., Arneson, N., Bradley, C., Byamukama, E., Byrne, A. M., Chilvers, M. I., Giesler, L. J., Halvorson, J., Hooker, D. C., Kleczewski, N. M., Malvick, D., Markell, S. G., Potter, B., Pedersen, W., Smith, D. L., Tenuta, A., Telenko, D. E. P., Wise, K. A., Mueller, D. S., 2020. Meta-analysis of soybean yield response to foliar fungicides evaluated from 2005 to 2018 in the United States and Canada. 2020. Plant Disease doi.org/10.1094/pdis-07-20-1578-re
Conrad, A. M.†, Ravellette, J. D.‡, Shim, S.‡, and Telenko, D. E. P. 2021. Fungicide comparison for soybean diseases in central Indiana, 2020. Plant Disease Management Reports. 15:CF020.
Piñeros-Guerrero, N.†, Ravellette, J. D.‡, and Telenko, D. E. P. 2021. Evaluation of fungicides for foliar diseases on soybean in central Indiana, 2020. Plant Disease Management Reports. 15: CF080.
Piñeros-Guerrero, N.†, Ravellette, J. D.‡, and Telenko, D. E. P. 2021. Fungicide comparison for soybean diseases in southwestern Indiana, 2020. Plant Disease Management Reports. 15:CF081.
Conrad, A. M.†, Telenko, D. E. P. and Ravellette, J. D.‡ 2020. Evaluation of fungicides for control of foliar diseases of soybean northwestern Indiana, 2019. Plant Disease Management Reports. 14: CF027.
da Silva, C. R.‡, Telenko, D. E. P., and Ravellette, J. D.‡ 2020. Evaluation of fungicides for management of foliar diseases on soybean in central Indiana, 2019. Plant Disease Management Reports. 14: CF083.
Haupt, C.#, Telenko, D. E. P., and Ravellette, J. D.‡ 2020. Evaluation of fungicides for control of foliar diseases on soybean in southwestern Indiana, 2019. Plant Disease Management Reports. 14:CF087.
Shim, S.‡, Telenko, D. E. P., and Ravellette, J. D.‡ 2020. Evaluation of fungicide timing and efficacy for foliar diseases in soybean in central Indiana, 2019. Plant Disease Management Reports. Vol. 14:CF051.
Telenko, D. E. P., Ravellette, J. D.‡, and Conrad, A. 2019. Evaluation of foliar fungicides on soybean in northwestern Indiana, 2018. Plant Disease Management Reports. Vol. 13:CF132.
Telenko, D. E. P., Ravellette, J. D.‡, and Shim, S.‡ 2019. Evaluation of foliar fungicides for soybean disease management in central Indiana, 2018. Plant Disease Management Reports. Vol. 13:CF130.
Telenko, D. E. P., Ravellette, J. D.‡, and Shim, S.‡ 2019. Evaluation of fungicides for foliar disease control on soybean in central Indiana, 2018. Plant Disease Management Reports. Vol. 13:CF131.
†AUTHOR NOTED WITH † is/was a graduate student in Dr. Telenko's program.
Research supported by:
