Suppressing effects of paper pot transplantation and sulfur material application on southern blight on Jerusalem artichoke

Jerusalem artichoke contain inulin and is used to produce functional foods.
However, southern blight (stem rot), caused by the soil borne fungus Sclerotium rolfsii, has been a significant important threat to Jerusalem artichoke cultivation.
Two techniques, such as sulfur fertilizer broadcast and paper pot seedling transplantation, have been reported to suppress this disease.
Each technique alone could not control the disease at high levels, but the combination of the two techniques might showed a high suppressing effect.
Thus, in this study, we evaluated their suppressing effects on Southern blight of paper pot seedling transplantation (T1), sulfur fertilizer broadcast (T2), and their combined use (T1+ T2). Additionally, we also investigated the effects on the plant height, yield, and inulin content of Jerusalem artichoke.
The effect of the treatment on the disease was investigated in S. rolfsii inoculated area, and the effects of the treatment on plant height, yield, and inulin content were investigated in non-inoculated area of the field.
Most of the plants died in the control (non-treatment) plot, disease index was significantly suppressed in the T1 and T2 plots, and a higher suppressing effect was observed in the combined T1+T2 plot.
There were no significant differences in plant height, yield, and inulin content among all the plots.
Sulfur fertilizer broadcast, paper pot seedling transplantation, and their combination could be used for suppressing southern bright in Jerusalem artichoke cultivation, and they are expected to be a new available cultivated technology.

IV Asian Horticultural Congress – AHC2023

Y. Matsumoto, M. Yamaga, T. Watanabe

Helianthus tuberosus, inulin, Sclerotium rolfsii, southern stem rot, yield

https://doi.org/10.17660/ActaHortic.2024.1404.133