A Practical Estimating Method of the Dose-Response Curve between Inoculum Density of Plasmodiophora brassicae and the Disease Severity for Long-term IPM Strategies

JARQ : Japan Agricultural Research Quarterly
ISSN 00213551
書誌レコードID(総合目録DB) AA0068709X
本文フルテキスト
44-04-07.pdf1.22 MB

A model was developed to evaluate long-term temporal changes in disease severity (DS) of the clubroot disease of Chinese cabbage in the field with various management strategies. The model consists of a dose-response curve (DRC) of resting spore (RS) density of Plasmodiophora brassicae and DS, and the rate of RS density change due to leafy daikon cropping as a decoy plant, plowing the clubbed roots in the soil after harvest, and natural reduction. The DRC was estimated by greenhouse experiments. Three DRCs were estimated by experiments carried out in 1995-1997. The DRC in 1996 predicted the highest DS at all RS densities and hence was considered to represent a conducive condition, and that in 1997 predicted the lowest DS and was considered to represent a suppressive condition, respectively. Field data for three years (1996-1998) fell into an area surrounded by both DRC. This result confirmed the validity of the DRCs. Also the model was validated by field experiments where leafy daikon was cultivated before planting Chinese cabbage. The usefulness of the model for long-term prediction of temporal changes of DS was discussed.

刊行年月日
作成者 TSUSHIMA Seiya MURAKAMI Hiroharu AKIMOTO Takayuki KATAHIRA Mitsuhiko KUROYANAGI Yukiko SHISHIDO Yoshihiro
著者キーワード

clubroot

crop rotation

disease control

population dynamics

公開者 Japan International Research Center for Agricultural Sciences
オンライン掲載日
国立情報学研究所メタデータ主題語彙集(資源タイプ) Journal Article
44
4
開始ページ 383
終了ページ 390
DOI 10.6090/jarq.44.383
権利 Japan International Research Center for Agricultural Sciences
言語 eng

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