Abstract
Fumigants are used to reduce disease pressure and there is some evidence of benefits through promotion of beneficial microorganisms. The current study examined the effect of fumigation and a soil freshener implement, as recommended by the fumigant manufacturer, on the microbial community in a potato field in Southern Alberta. Fumigation did not greatly reduce microbial species abundance or diversity, though there were changes to the community structure. Fumigation and use of the soil freshener increased tuber size profiles, but not marketable yield. Fumigation was effective at reducing wilt ratings, but there was no added benefit to using the soil freshener in the current study. This research highlights the need for management tools to decide whether fumigation and application method will increase profitability within a given production system.
Resumen
Los fumigantes se usan para reducir la presión de la enfermedad y hay alguna evidencia de los beneficios mediante la promoción de microorganismos benéficos. El presente estudio examinó el efecto de la fumigación y un implemento ambientador de suelo, como lo recomienda el fabricante del fumigante, sobre la comunidad microbiana en un campo de papa del sur de Alberta. La fumigación no redujo grandemente la abundancia de especies microbianas o su diversidad, aunque hubo cambios en la estructura de la comunidad. La fumigación y el uso del ambientador del suelo aumentaron los perfiles del tamaño de tubérculo, pero no el rendimiento comercial. La fumigación fue efectiva en la reducción de niveles de marchitez, pero no hubo beneficio adicional por el uso del ambientador del suelo en el presente estudio. En este estudio sobresale la necesidad de herramientas de manejo para decidir si la fumigación y el método de aplicación aumentarán las ganancias dentro de un sistema de producción determinado.
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Acknowledgements
This work was supported by the Potato Early Dying Complex project funded by the University of Lethbridge Research Operating Fund (DY), in collaboration with the Potato Growers of Alberta, McCain Foods Limited, Cavendish Farms and Lamb Weston Holdings Inc. The authors also acknowledge CP Farms on whose land the work was carried out and for providing labor and equipment contributions.
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Neilson, J.A.D., Robertson, C.J., Snowdon, E.W. et al. Impact of Fumigation on Soil Microbial Communities under Potato Cultivation in Southern Alberta. Am. J. Potato Res. 97, 115–126 (2020). https://doi.org/10.1007/s12230-019-09761-4
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DOI: https://doi.org/10.1007/s12230-019-09761-4