Japanese Journal of Phytopathology
Online ISSN : 1882-0484
Print ISSN : 0031-9473
ISSN-L : 0031-9473
Originals
Control of root rot of Russell prairie gentian (Eustoma grandiflorum) in hydroponic culture using a mixture of azoxystrobin and metalaxyl M.
M. SATOUN. FUKUTA
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2016 Volume 82 Issue 2 Pages 93-100

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Abstract
For the stable production of Russell prairie gentian (Eustoma grandiflorum) flowers in hydroponic culture, we tested various applications of a granular mixture of azoxystrobin and metalaxyl M. The results indicated that application of 0.25 or 0.5 g/seedling of the mixture to the top of each peat block in the cell tray soon after transplantation of seedlings suppressed root rot caused by Pythium spinosum. This concentration of fungicidal ingredients in the nutrient solution is lower than the regulatory limit imposed by the Japanese government. The tests were repeated over 2 years, and similar results were obtained. Based on these results, we can control of root rot in Russell prairie gentian with a granular mixture of azoxystrobin and metalaxyl M.
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© 2016 The Phytopathological Society of Japan
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