<i>Phytophthora cactorum </i>によるイチゴ疫病に対する土壌還元消毒法および数種殺菌剤の防除効果と残効年数

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  • 三澤 知央
    北海道立総合研究機構　農業研究本部　道南農業試験場
  • 新村 昭憲
    北海道立総合研究機構　農業研究本部　中央農業試験場

書誌事項

タイトル別名
  • Control Effectiveness of Biological Soil Disinfestation and Some Fungicides against Phytophthora Rot of Strawberry Caused by <i>Phytophthora cactorum </i>and Its Duration
  • Phytophthora cactorumによるイチゴ疫病に対する土壌還元消毒法および数種殺菌剤の防除効果と残効年数
  • Phytophthora cactorum ニ ヨル イチゴ エキビョウ ニ タイスル ドジョウ カンゲン ショウドクホウ オヨビ スウシュ サッキンザイ ノ ボウジョ コウカ ト ザンコウネンスウ

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<p>The biological soil disinfestation（BSD）and the use of three soil fumigants and metalaxyl granule against Phytophthora rot of strawberry caused by Phytophthora cactorum were evaluated in terms of their control effectiveness,during the period of 2003-2008 in the field．The three soil fumigants were also evaluated of their effective duration against the pathogen. BSD was highly effective with protective values of 90, 98 and 99 in 2003, 2004 and 2007, respectively. However, in 2006, the method was observed to be not effective owing to the low temperature and lack of sunshine during the treatment period. The three soil fumigants, i.e., dazomet granule, tape formulation of chloropicrin and methyl-isothiocyanate･1, 3-dichloropropene oil solution,were effective with protective values of 65-74, 63-90 and 81-97, respectively. These three soil fumigants remained effective 2 cropping seasons after treatment. The application of metalaxyl granule before planting showed no control effectiveness.</p>

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