Annual Report of The Kansai Plant Protection Society
Online ISSN : 1883-6291
Print ISSN : 0387-1002
ISSN-L : 0387-1002
Original Articles
Maintaining high soil pH in planting row by lime applications with serial earthing-ups alleviate welsh onion white rot disease in cold season
Hiroyuki IyozumiMikihiko SuzukiYoshika OkamuraChizuko Kageyama
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JOURNAL FREE ACCESS

2014 Volume 56 Pages 37-41

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Abstract

We examined the effect of lime applications with serial earthing-ups on welsh onion white rot disease in an infested field. By 4-serial lime applications from October until December, the rate of vendible welsh onions was raised from 3.3% to 24.0%. To define the effect of maintaining high soil pH in cold season, we carried out the inoculation test using a combination of leaf sheath disks and sclerotia at different pH values and temperatures. The disease incidence in leaf sheath disks with the initial pH 7.0 or 7.5 was significantly fewer than that with pH 6.5 or lower at 10 or 5°C. From these results, we suggest the benefit of the maintaining high soil pH in cold season to alleviate welsh onion white rot disease.

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© 2014 The Kansai Plant Protection Society
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