Application of calcined lime with simeconazole suppresses rice false smut disease

  • Taketo AshizawaEmail author
Disease Control


Rice false smut caused by Villosiclava virens is a devastating disease of rice. Because the primary infection source is chlamydospores in the soil, the effect of mixing calcined lime into paddy soil in combination with spraying the fungicide simeconazole on submerged soil before rice heading on the incidence of rice false smut was tested in 2016 and 2017. The calcined lime decreased the number of false smut balls, and additional spraying of simeconazole on paddy fields further decreased the incidence. Our findings suggest that calcined lime may be decreased the number of chlamydospores in field soil, and calcined lime applied with simeconazole is effective for controlling the disease.


Villosiclava virens Calcined lime Simeconazole Disease control Soil-borne 



We thank Dr. Takayuki Mitsunaga for assistance with the statistical analyses.

Compliance with ethical standards

Conflict of interest

The author declares no conflict of interest. The manuscript was prepared under compliance with ethical standards.

Animal studies and human participants

This article does not contain any studies with human participants or animal performed by the author.


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Copyright information

© The Phytopathological Society of Japan and Springer Japan KK, part of Springer Nature 2019

Authors and Affiliations

  1. 1.National Agriculture and Food Research OrganizationCentral Region Agricultural Research CenterTsukubaJapan

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