2024-03-29T06:34:16Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/680272022-11-17T02:08:08Zhdl_2115_20070hdl_2115_157Airborne basidiospores as an inoculum source of Typhula variabilis and the effect of hilling on the incidence of Typhula winter rot of carrotsIkeda, SachikoHoshino, TamotsuMatsumoto, Naoyuki1000000234948Kondo, Norioopen accessThe final publication is available at Springer via http://dx.doi.org/doi:10.1007/s10327-016-0693-4Cultural controlInfection periodOverwintering carrotsSpore dispersalTyphula variabilis470Typhula winter rot on overwintering carrots caused by Typhula variabilis is a newly confirmed disease, and no practical control measure is yet available. To develop a control method, here we researched the infection period of T. variabilis and the time that winter rot appeared on carrots. Using spore traps, we found that basidiospore rain occurred from September to November before snowfall in Memuro, Hokkaido. In addition, carrot leaves collected in autumn had already been infected by T. variabilis. These epidemiological investigations revealed that the pathogen releases basidiospores to infect carrot leaves before snow cover, resulting in root decay under snow. An effective control method was then developed to avoid direct contact of basidiospores of T. variabilis with plant tops by covering the plants with soil in autumn. Thus, the percentage of rotted roots was reduced to about half.Springer2017-01engjournal articleAMhttp://hdl.handle.net/2115/68027https://doi.org/10.1007/s10327-016-0693-41345-2630Journal of general plant pathology8314650https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/68027/1/JGPP-D-16-00150-au%281118last%29.pdfapplication/pdf175.46 KB2017-01