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Effect of Skin Sooty and Decay Disease Control on ‘Niitaka’ Pear Fruit for Storage

신고배 저장중 과피얼룩 및 부패병에 대한 방제 효과

  • Lee, Jung-Sup (Horticultural & Herbal Crop Environment Div. National Institute of Horticultural & Herbal Science, RDA) ;
  • Choi, Jin-Ho (Pear Experimental Station, National Institute of Horticultural & Herbal Science, RDA,) ;
  • Park, Jong-Han (Horticultural & Herbal Crop Environment Div. National Institute of Horticultural & Herbal Science, RDA) ;
  • Kim, Dae-Hyun (Horticultural & Herbal Crop Environment Div. National Institute of Horticultural & Herbal Science, RDA) ;
  • Han, Kyung-Sook (Horticultural & Herbal Crop Environment Div. National Institute of Horticultural & Herbal Science, RDA) ;
  • Han, You-Kyoung (Horticultural & Herbal Crop Environment Div. National Institute of Horticultural & Herbal Science, RDA)
  • 이중섭 (국립원예특작과학원 원예특작환경과) ;
  • 최진호 (배시험장) ;
  • 박종한 (국립원예특작과학원 원예특작환경과) ;
  • 김대현 (국립원예특작과학원 원예특작환경과) ;
  • 한경숙 (국립원예특작과학원 원예특작환경과) ;
  • 한유경 (국립원예특작과학원 원예특작환경과)
  • Published : 2009.12.01

Abstract

Postharvest skin sooty dapple and decay disease of pear fruit often originates at small stain symptoms that occurred during harvest and handling. Experiments were conducted to characterize the effect of timing of application of disease control materials, and to evaluate sequential postharvest applications of fungicides or fungicides and bio-control agents. Fungicides and bio-control agents were increasingly less effective when the period between harvest and application was prolonged. Thiabendazole (TBZ) applied to fruit without artificial wounding or inoculation effectively reduced skin sooty and decay disease when applied within 3 weeks or 6 weeks in 2 years of study. TBZ, Fludioxonil and pyrimethanil were effective in controlling skin sooty and decay disease at artificial wounds inoculated with Cladosporium tenuissimum up to 14 days after inoculation. Application of TBZ at harvest followed 3 weeks later by application of Fludioxonil was superior to application of TBZ at harvest alone. Two bacterial biocontrol agents reduced skin sooty and decay disease at pear wounds inoculated with C. tenuissimum up to 14 days after inoculation with C. tenuissimum, but were ineffective when applied at 28 days after inoculation. Of possible sequential arrangements of fungicide and bio-control treatments, application of the most effective material promptly after harvest generally resulted in the highest level of disease control.

배 저장 중 신고에서 발생되는 과피얼룩 및 부패증상의 발생억제를 위해 2년간 시험한 결과 수확 후 약제 또는 생물제제 살포로 발병을 억제할 수 있었으며, 살포시기가 늦어질수록 발병가능성은 높은 것으로 나타났다. 한편, 처리시기와 관련하여 과실 수확 후 6주 또는 그 이후 처리는 상처부위의 부패 발생 억제효과가 낮았다. 그러나 TBZ를 수확 3~6주에 처리시 저장중 과피얼룩 및 부패과 발생은 현저히 억제되었다. 또한, TBZ, Fludioxonil과 Pyrimethanil 처리에 의한 과피얼룩 및 부패과 발생은 상처접종 처리에서 최대 14일까지 발병이 억제되었다. 그리고 수확시 TBZ 및 3주 후 Fludioxonil 처리는 수확시 TBZ 단용처리보다 발병억제력이 높았다. 한편, 2종의 생물제제(EXTN-1, Bio-Save 110)는 C. tenuissimum 접종처리에서 저장 14일까지 발병을 억제하여 저장 유통중 발생하는 상처부위 발병 억제가 가능 할 것으로 판단되었다. 결론적으로 저장 중 과피얼룩 및 부패방제를 위해 서로 다른 약제조합을 수확 후 저장 전에 처리할 때 가장 높은 방제효과를 얻을 수 있었다.

Keywords

References

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