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Book: Proceedings of the Second International Turfgrass Research Conference
Published by: American Society of Agronomy, Crop Science Society of America



  1.  p. 79-88
    Proceedings of the Second International Turfgrass Research Conference

    Eliot C. Roberts (ed.)

    ISBN: 978-0-89118-573-4


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Seasonal growth and major nutrient uptake of turfgrasses under cool, wet conditions1

  1. F.J. Wray


Clippings from plots of five turfgrasses, Poa pratensis L., ‘Merion’ and ‘Fylking;’ Festuca rubra L., ‘Pennlawn;’ Agrostis palustris Huds., ‘Penncross;’ and A. tenuis Sibth., ‘Bardot’ were collected weekly throughout a 20-week growing season. The clippings were weighed fresh, dried, weighed again, and analyzed for N, P, and K. Highest total dry matter yields were produced by Penncross and Bardot, primarily because of better early and late season growth. Peak dry weights in all species occurred 1 to 2 weeks following periods of high rainfall. No obvious relation was observed between dry matter production and sunlight or temperature patterns throughout the season. Nutrient removal generally paralleled dry matter production. Early clippings from Merion bluegrass and Pennlawn fescue contained more N, P, and K after the periods of peak growth. Merion and Fylking bluegrasses gave higher N and P analyses during the first 2 and 4 weeks of the growing season respectively. Additional index words: Seasonal dry matter production, Growth patterns, Chemical analysis of clippings, Poa pratensis L., Festuca rubra L., Agrostis spp.

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Copyright © 1974. Copyright 1974 by the American Society of Agronomy, Inc. and the Crop Science Society of America, Inc., 5585 Guilford Rd., Madison, WI 53711 USA