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This article in AJ

  1. Vol. 80 No. 1, p. 27-30
     
    Received: June 30, 1986
    Published: Jan, 1988


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doi:10.2134/agronj1988.00021962008000010006x

Establishment Clipping of Tall Fescue and Companion Annual Ryegrass

  1. A. D. Brede  and
  2. J. L. Brede
  1. Jacklin Seed Company, W. 5300 Jacklin Ave., Post Falls, ID 83854.

Abstract

Abstract

Due to its soil stabilizing ability, annual ryegrass (Lolium multiflorum Lam.) is sometimes used as a companion crop with tall fescue (Festuca arundinacea Schreb.). Problems arise, however, because of the competitive nature of annual ryegrass. The purpose of this study was to develop a clipping treatment that could be used during turf establishment to allow annual ryegrass to effectively stabilize the soil in a mixture with tall fescue but would result in a small amount of annual ryegrass in the mature stand. Three field studies were conducted over a 3-yr period on Kirkland silt loam (fine, mixed, thermic, Udertic Paleustoll) in central Oklahoma. In the first study, individual seedlings were clipped in a factorial arrangement of cutting heights, weeks from emergence to first clip, and clipping repetitions. Regression indicated that 22 to 50% of the variability in shoot and root growth at 60 d of age could be attributed to initial clipping treatments. In a second study, on the first day of emergence 90% of ryegrass seedlings had emerged versus 50% of the tall fescue seedlings, suggesting the potential for managing species dominance via clipping. A third study evaluated two seeding rates and seven clipping treatments (developed in the earlier experiments) on 4:l fescue/ryegrass mixture. Waiting 6 wk before initially cutting the turf favored annual ryegrass, whereas tall fescue was generally favored by a single, close clipping (0-7 mm height) shortly after annual ryegrass emergence (0-3 d after emergence). Initial clipping treatments reduced ryegrass ground coverage at 60 d from 82% to as little as 46%.

Contnbution no. 5030 from the Oklahoma Agric. Exp. Stn.

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