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

 

This chapter in PROCEEDINGS OF THE SECOND INTERNATIONAL TURFGRASS RESEARCH CONFERENCE

  1.  p. 467-473
     
    Proceedings of the Second International Turfgrass Research Conference

    Eliot C. Roberts (ed.)

    ISBN: 978-0-89118-573-4

     

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doi:10.2135/1974.proc2ndintlturfgrass.c71

Influence of two new growth regulating chemicals on Baron Kentucky bluegrass1

  1. W.G. Brown and
  2. D.B. White

Abstract

A ‘Baron’ Kentucky bluegrass turf community showed 50% growth suppression 3 weeks after treatment with (Acetic acid di-)α-α′-imino-N-(phosphonomethyl)diammonium salt (MON 0175) and 3-trifluoromethyl sulfonamide-p-acetotoluidide (MBR 6033). MBR 6033 maintained influence for a period of 10 weeks. MON 0175 suppressed growth for a minimum of 12 weeks. Slight lightening of foliage color was observed during the 2-week period after treatment at the highest rate. Discoloration and/or normal color was replaced after the second week by a green darker than that of the control. Both chemicals reduced flower head development by 60 to 80%.

Growth regulators reduced root growth of sod transplanted 3 months after treatment. Turf treated with growth regulators and supplemental potassium produced twice the root growth of grass treated with growth regulators alone.

Development of hardiness apparently was not affected by growth regulator treatment. Additional index words: MON 0175, MBR 6033, Growth regulation, Bluegrass, Winter injury.

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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