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  1. Growth, nitrogen use efficiency, and leachate comparison of subirrigated and overhead irrigated pale purple coneflower seedlings

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    Author(s): Jeremy R. Pinto; Rhiannon A. Chandler; R. Kasten Dumroese
    Date: 2008
    Source: HortScience, Vol. 43(3): 897-901
    Publication Series: Miscellaneous Publication
    PDF: View PDF  (157 KB)

    Description

    Pale purple coneflower [Echinacea pallida (Nutt.) Nutt.] was grown within three container volumes (90, 105, and 340 cm3) under subirrigation and overhead irrigation treatments. Subirrigated coneflowers showed increased seedling quality with more biomass (14%), better nitrogen use efficiency (13%), greater nitrogen content (N; 11%), more height (15%), and lower mortality compared with overhead-irrigated seedlings. Plants also showed increasing height, biomass, and N content with increasing container volume. Overhead irrigated coneflowers had more leachate compared with subirrigated seedlings, which produced none. Leachate electrical conductivity and N were monitored throughout the growing season and decreased at similar rates, whereas subirrigation effluent levels remained constant. Subirrigation offers a viable alternative to traditional overhead irrigation systems by producing this native plant with equal or better quality without discharging potentially harmful leachate into the environment.

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    Citation

    Pinto, Jeremy R.; Chandler, Rhiannon A.; Dumroese, R. Kasten. 2008. Growth, nitrogen use efficiency, and leachate comparison of subirrigated and overhead irrigated pale purple coneflower seedlings. HortScience, Vol. 43(3): 897-901

    Keywords

    Echinacea pallida, mortality, runoff, electrical conductivity

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