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Optimum irrigation strategy to maximize yield and quality of potato: A case study in southern Alberta, Canada

The ability to understand how various irrigation levels impact potato productivity could facilitate the introduction of variable‐rate irrigation technology for high‐quality potato production in southern Alberta, Canada. A two‐year field study (2015 and 2016) was therefore conducted to assess the eff...

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Bibliographic Details
Published in:Irrigation and drainage 2021-10, Vol.70 (4), p.609-621
Main Authors: Yari, Aghil, Gilbert, Laura, Madramootoo, Chandra A., Woods, Shelley A., Adamchuk, Viacheslav I.
Format: Article
Language:English
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Summary:The ability to understand how various irrigation levels impact potato productivity could facilitate the introduction of variable‐rate irrigation technology for high‐quality potato production in southern Alberta, Canada. A two‐year field study (2015 and 2016) was therefore conducted to assess the effect of three irrigation levels on yield and quality of potato. Several parameters were measured including climatic data, irrigation amounts, total and marketable potato yield, and tuber quality parameters (specific gravity and glucose content). The Alberta Irrigation Management Model was used to estimate irrigation levels based on soil, crop, and weather variables. The year 2015 was exceptionally dry, resulting in a total of 21 irrigation events, and a total of 12 irrigation events were undertaken in the 2016 growing season. In 2015, the crop in plots receiving normal irrigation (361 mm per season) produced slightly lower total yield than plots receiving high irrigation (480 mm per season), but the normal irrigation plots produced statistically higher marketable yield and better tuber quality in terms of specific gravity and glucose content. In 2016, there were no significant differences between potato yield and quality between irrigation treatments because the rainfall for the year was close to the long‐term average annual rainfall. Résumé La capacité de comprendre comment divers niveaux d'irrigation influent sur la productivité de la pomme de terre pourrait faciliter l'introduction de la technologie d'irrigation à débit variable (VRI) pour une production de pommes de terre de haute qualité dans le sud de l'Alberta, au Canada. Une étude de terrain de deux ans (2015 et 2016) a donc été menée pour évaluer l'effet de trois niveaux d'irrigation sur le rendement et la qualité de la pomme de terre. Plusieurs paramètres ont été mesurés, notamment les données climatiques, les quantités d'irrigation, le rendement total et commercialisable en pommes de terre et les paramètres de qualité des tubercules (densité et teneur en glucose). Le modèle de gestion de l'irrigation de l'Alberta (AIMM) a été utilisé pour estimer les niveaux d'irrigation en fonction des variables du sol, des cultures et des conditions météorologiques. L'année 2015 a été exceptionnellement sèche, ce qui a entraîné un total de 21 événements d'irrigation et un total de 12 événements d'irrigation a été entrepris au cours de la saison de croissance 2016. En 2015, la récolte des parcelles recevant une irriga
ISSN:1531-0353
1531-0361
DOI:10.1002/ird.2556