Japanese Journal of Phytopathology
Online ISSN : 1882-0484
Print ISSN : 0031-9473
ISSN-L : 0031-9473
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Volume 90, Issue 2
Displaying 1-3 of 3 articles from this issue
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  • Efficacy of different spray practices and fungicides against Sclerotinia rot of cabbage
    M. HISHIIKE
    2024 Volume 90 Issue 2 Pages 79-86
    Published: May 25, 2024
    Released on J-STAGE: May 25, 2024
    DOIhttps://doi.org/10.3186/jjphytopath.90.79
    JOURNAL RESTRICTED ACCESS
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    We tested multiple-nozzle fungicide spray booms with or without swinging the boom to assess their efficiency for spray coverage on cabbage and/or efficacy of the fungicide against Sclerotinia rot of cabbage. Tests with water-sensitive paper showed that sprays without swinging the booms provided better coverage of young cabbage plants and cabbage heads than sprays with boom swinging. Disease incidence after sprays of an iprodione suspension without swinging the boom was 50% less than that after sprays with swinging. Thus, control efficacy of fungicide sprays is higher when the booms are not swung, at least against Sclerotinia rot of cabbage.

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  • Volatilized, slightly acidic electrolyzed water suppresses gray mold on cut rose flowers
    Y. TAKAGAWA, M. NIKAIDO, M. HAMATANI, T. SOEJIMA, M. TANAKA, T. NISIZA ...
    2024 Volume 90 Issue 2 Pages 87-93
    Published: May 25, 2024
    Released on J-STAGE: May 25, 2024
    DOIhttps://doi.org/10.3186/jjphytopath.90.87
    JOURNAL RESTRICTED ACCESS
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    Electrolyzed water has sterilizing power against bacterial and fungal pathogens. Here we volatilized slightly acidic electrolyzed water (SAEW) using a forced-air volatilizing system and tested its efficacy against Botrytis cinerea, which causes gray mold, on cut roses stored in high humidity. The volatilized SAEW inhibited germination of conidia and development of gray mold on petals treated with at least 10,000 μg/m2 of free available chlorine (FAC). Treatment of volatilized SAEW with 20,000 μg/m2 of FAC inhibited gray mold on cut flowers densely packed in a bucket for transport to the market. The volatilized SAEW inhibited disease development on cut flowers with naturally adhering B. cinerea. Importantly, the volatilized SAEW does not wet the flowers. These results provide new insight into practical use of the treatment to prevent gray mold on cut roses.

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