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Title:   Author  item
                                            Samac, Deborah

                                                         - *Debby*item
                                            Castell-Miller, Claudia
  Submitted to: Book Chapter
                                    Publication Type: Book / Chapter
                                    Publication Acceptance Date: 2/10/2017
                                    Publication  Date: 2/1/2023
                                    Citation: Samac, D.A., Castell-Miller, C.V. 2023. Diseases of wild rice. In: Hollier, C. A., Padgett, G. B. and Draper, M. A., editors. Diseases of Field Crops. St. Paul, Minnesota: APS Press. p. 373-381.Interpretive Summary:
                                Technical Abstract: Diseases are much more pronounced in cultivated wild rice than in natural stands, most likely due to the narrower genetic base of the populations, plant stress due to high planting density and floodwater removal prior to harvest, and high relative humidity in the plant canopy. Yield losses occur as a result of reduced grain filling from reduced photosynthetic capacity from foliar diseases, lodging of stalks, reduced productivity or plant death from crown rots, and infection of grain. The major diseases of wild rice are: fungal brown spot, leaf sheath and stem rot, spot blotch, crown and root rot, bacterial brown spot, and bacterial leaf streak. A disorder called Johnson brown occurs on cultivars with the ‘Johnson’ genetic background. These plants are hyper-susceptible to foliar diseases and appear to lack basal disease resistance. This chapter provides information on disease symptoms, pathogen characteristics, and disease management practices for the major and minor diseases of wild rice.


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