Stop the Rot researchers recently published several new Plant Disease Management Reports on the results of field trials in the first season of work. Reports are now available from three participating states (GA, WA, NY).
Researchers conducted trials to evaluate and compare different options currently used by growers to manage bacterial rots, including:
- Irrigation and nitrogen management practices;
- Bactericides applied in the field;
- Cultural practices including different methods for and timing of harvesting, topping, and rolling;
- Post-harvest disinfectants for managing bacterial rots in storage.
More reports will be added to this list as they are published.
list last updated August 2021
Objectives B1 and B2: Irrigation and nitrogen management
da Silva, A., H.I. de Jesus, B. Dutta. 2021. Effects of irrigation method, nitrogen rate, and fertilizer application timing on bacterial diseases in Vidalia onion, Georgia 2020. Plant Disease Management Report 15:V012. https://doi.org/10.1094/PDMR15
Belo, T., L. du Toit, T. Waters, M. Derie, and G. LaHue. 2021. Effects of irrigation frequency and final irrigation timing on onion bacterial diseases in the Columbia Basin of Washington, 2020. Plant Disease Management Reports 15:V109 https://doi.org/10.1094/PDMR15
Objective B3: Bactericides
Dutta, B. 2021. Evaluation of onion growth stage directed chemical applications and thrips management program on center rot incidence in onion bulbs in Georgia, 2020. Plant Disease Management Report 15:V023. https://doi.org/10.1094/PDMR15
Dutta B. 2021. Evaluation of bactericides and plant defense inducers to manage center rot of onion in Georgia, 2020. Plant Disease Management Report 15:V027. https://doi.org/10.1094/PDMR15
du Toit, L.J., Derie, M.L., Gundersen, B., Waters, T.D., and Darner, J. 2021. Efficacy of bactericides for management of bacterial leaf blight and bulb rots in an onion crop in Pasco, WA, 2020. Plant Disease Management Reports 15:V107. https://doi.org/10.1094/PDMR15
Hoepting, C.A., S. K. Caldwell and E. R. van der Heide. 2021. Evaluation of selected pesticides for control of bacterial bulb rot in onion, 2020. Plant Disease Management Reports 15.V108 https://doi.org/10.1094/PDMR15
Hoepting, C.A., S. K. Caldwell and E. R. van der Heide. 2021. Variety evaluation and effect of copper bactericide on bacterial bulb rot in onion, 2020. Plant Disease Management Reports 15:V107. https://doi.org/10.1094/PDMR15
Objective B4: Cultural practices
Dutta B. 2021. Evaluation of harvesting methods on post-harvest incidence of center rot and sour skin in onion, Georgia 2020. Plant Disease Management Report 15:V025. https://doi.org/10.1094/PDMR15
Dutta B. 2021. Evaluation of digging methods on post-harvest incidence of center rot and sour skin in onion, Georgia 2020. Plant Disease Management Report 15:V026. https://doi.org/10.1094/PDMR15
du Toit, L.J., M. L. Derie, B. Gundersen. 2021. Efficacy of late-season cultural practices on bacterial leaf blight and bulb rots in an onion bulb crop in Pasco, WA, 2020. Plant Disease Management Reports 15:V100. https://doi.org/10.1094/PDMR15
Objective B5: Post-harvest treatments
du Toit, L.J., M. L. Derie, B. Gundersen. 2021. Efficacy of disinfectants applied to onion bulbs in storage for control of bacterial bulb rots, Pasco, WA, 2020-2021. Plant Disease Management Reports 15.V102. https://doi.org/10.1094/PDMR15