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Filtering by: Subject Defoliation -- Oregon Remove constraint Subject: Defoliation -- Oregon Committee Member Doescher, Paul Remove constraint Committee Member: Doescher, Paul Rights Statement Copyright Not Evaluated Remove constraint Rights Statement: Copyright Not Evaluated

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  • The effects of defoliation on Bromus tectorum seed production and growth

    Creator:
    Mayer, Kara Hempy
    Abstract:
    Cheatgrass (Bromus tectorum L.) is a widespread exotic weed in the Intermountain sagebrush steppe. An annual grass, it is highly prolific and very competitive with native perennial grass seedlings. A clipping experiment carried out at two cheatgrass-dominated sites (Lincoln Bench and Succor Creek) in eastern Oregon analyzed effects of defoliation...
    Resource Type:
    Masters Thesis
    Full Text:
    -dominated sites (Lincoln Bench and Succor Creek) in eastern Oregon analyzed effects of defoliation on

  • Growth responses of Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) to defoliation

    Creator:
    Osman, Khalid Amir
    Abstract:
    The effect of defoliation intensity and season on Douglas-fir growth were studied in three replications in the Siuslaw National Forest during 1988-1990. Four intensities of defoliation were applied once in either spring or summer 1988. Stem diameter and canopy area were linearly inversely proportional to the level of defoliation. Defoliation...
    Resource Type:
    Dissertation
    Full Text:
    Defoliation. Khalid A. Osman and Steven H. Sharrow Department of Rangeland Resources, Oregon State