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@ARTICLE{Aidoo:888883,
      author       = {Aidoo, A. K. and Arthur, S. and Bolfrey-Arku, G. and Osei,
                      K. and Lamptey, J. N. L. and Mochiah, M. B. and
                      Ohene-Mensah, G. and Frimpong, F. and Appiah-Kubi, Z. and
                      Danquah, E. O.},
      title        = {{S}torage rot of seed yam resulting from speargrass
                      injuries},
      journal      = {African crop science journal},
      volume       = {28},
      number       = {2},
      issn         = {2072-6589},
      address      = {Kampala},
      reportid     = {FZJ-2020-05288},
      pages        = {203 - 211},
      year         = {2020},
      abstract     = {Postharvest rot due to injury is a major contributing
                      factor to the declining quality of stored seed yams
                      (Dioscorea spp.). Among the several known injuries, the
                      piercing effect of speargrass rhizomes has become a serious
                      constraint for yam production in Ghana. The objective of
                      this study was to assess injuries on seed yams resulting
                      from piercing of speargrass rhizomes and their effects on
                      postharvest rots in Ghana. Eighty farmer fields from Mem,
                      Watro, Asanteboa and Abour in the Atebubu-Amantin Municipal
                      in the Bono East Region of Ghana were screened for
                      speargrass incidence and injury on harvested tubers, for
                      laboratory analysis of pathogens in 2016 and 2017. The
                      tubers were sorted into four categories of seed yam based on
                      weight. Thirty seed yams each of two selected white yam
                      cultivars (Dente and Kpamyo) with visible speargrass
                      rhizome-pierced-tubers (VSRPT) and non- speargrass rhizome
                      pierced healthy tubers (NSRPHT) were randomly selected and
                      stored in a ban for weekly assessment of rot. The rotten
                      tissues from the localised area of VPSRT were subjected to
                      pathological investigations in the laboratory. The incidence
                      of injury seemingly increased with increasing tuber weight.
                      It was $0\%$ for < 100 g samples and averagely $14\%$ for >
                      1 kg samples, irrespective of cultivars and locations.
                      Incidence of rot from NSRPHT sample was observed 5 weeks
                      after storage (WAS) for both cultivars; and 2 WAS from the
                      VSRPT sample and $40\%$ higher than NSRPHT at 8 WAS. Eight
                      and six known rot pathogens were isolated from the rotten
                      tissues of VSRPT of Dente and Kpamyo, respectively. Injury
                      from the piercing of speargrass rhizome significantly
                      contributed to hastening of tuber rots; while tuber injury
                      increased with increasing speargrass density. Appropriate
                      management of speargrass is essential for commercial seed
                      yam growers to reduce tuber damage which affects yam
                      quality, storage and marketing.},
      cin          = {IBG-2},
      ddc          = {640},
      cid          = {I:(DE-Juel1)IBG-2-20101118},
      pnm          = {582 - Plant Science (POF3-582)},
      pid          = {G:(DE-HGF)POF3-582},
      typ          = {PUB:(DE-HGF)16},
      doi          = {10.4314/acsj.v28i2.6},
      url          = {https://juser.fz-juelich.de/record/888883},
}