Abstract
A panel of 48 of Italian rice varieties recently released and mostly included in the Common Catalogue of Agricultural Species was evaluated for susceptibility to panicle blast disease (Magnaporthe oryzae B. Couch) in open field conditions. Trials were performed under highly favourable conditions for the pathogen, and visual assessments focused on the severity and incidence of panicle blast symptoms. Only 8% of newly released varieties were classified as resistant, whereas 40% were highly susceptible. Our results confirmed that a fungicide treatment with tricyclazole at booting stage reduces the disease incidence and severity and that the effect is measurable up to 6 weeks after treatment. A double application of tricyclazole at stem elongation and booting stage was more effective than the single application. This study provides ready-to-use information to support rice growers in variety choice and planning of plant protection strategies, as well as public institutions in the emanation of guidelines for integrated pest management.
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Acknowledgments
Corteva (DU Pont, DOW Agrosciences) for financial support for the research activities. AgriDigit-Agromodelli project (DM n. 36502 of 20/12/2018), funded by the Italian Ministry of Agricultural, Food and Forestry Policies and Tourism.
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The datasets analysed in the current study are available from the corresponding author on reasonable request.
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The R code used for the analyses in the current study are available from the corresponding author on reasonable request.
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Mongiano, G., Titone, P., Bregaglio, S. et al. Susceptibility of novel Italian rice varieties to panicle blast under field conditions. Eur J Plant Pathol 160, 427–440 (2021). https://doi.org/10.1007/s10658-021-02254-3
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DOI: https://doi.org/10.1007/s10658-021-02254-3