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Filtering by: Advisor Johnson, Linwood E. Remove constraint Advisor: Johnson, Linwood E. Degree Name Doctor of Philosophy (Ph.D.) Remove constraint Degree Name: Doctor of Philosophy (Ph.D.)

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  • Dietary compostion and nutritional status of sheep and goats grazing two rangeland types in Baluchistan, Pakistan

    Creator:
    Wahid, Abdul
    Abstract:
    The main objective of this research was to assess the nutritional status of sheep and goats grazing two rangeland types in Baluchistan, Pakistan. These types were Artemisia maritima/Haloxylon griffithii association represented by the Zarchi Field Station and Cymbopogon shoenanthus, found at the Tomagh Field Station. Seasonal above ground biomass production...
    Resource Type:
    Dissertation
    Full Text:
    guidance filled the gaps in my professional personality. Dr. D. E. Johnson, my major professor, is a

  • Identification of restoration potential on southwestern Oregon rangelands

    Creator:
    Barrington, Mack R.
    Abstract:
    The objectives of this research were to 1) evaluate the establishment and peak standing crop of Berber Orchardgrass (Dactylis glomerata var. "Berber"), Palestine Orchardgrass (Dactylis glomerata var. "Palestine"), and Sheep Fescue (Festuca ovina var. "Covar") ; 2) to assess establishment and production changes resulting from environmental gradients (elevation, slope, aspect,...
    Resource Type:
    Dissertation
    Full Text:
    . Douglas Johnson for his unfailing support and guidance through the dark before the dawn. Thanks Doug for

  • Cattle behavior and distribution on the San Joaquin Experimental Range in the foothills of central California

    Creator:
    Harris, Norman Rex
    Abstract:
    Small herds of cows were observed and spatially mapped over continuous twenty-four hour periods. Treatments were implemented that investigated the effect of water site and supplementation on animal distribution patterns. A series of six observation periods constituted each observation series. Observation series were repeated winter (January) and summer (July) for...
    Resource Type:
    Dissertation
    Full Text:
    manuscripts. Dr. Douglas E. Johnson helped design and establish the experiment, observe animals, analyze data

  • Morphological variability and seed dormancy of Amelanchier (Rosaceae) grown in Oaxaca, Mexico

    Creator:
    Cruz-Cruz, Efrain
    Abstract:
    The purpose of this research was to determine whether hybridization between Amelanchier denticulata. (H.B.K.) Koch and Amelanchier nervosa (Decaisne) StandL occurs in Oaxaca, Mexico, and to evaluate components of yield and germination characteristics and seed dormancy of Amelanchier denticulata. Amelanchier nervosa and Amelanchier denticulata samples and morphological characters were used...
    Resource Type:
    Dissertation
    Full Text:
    . Douglas E. Johnson for his insight and advise through the process ofmy studies; especially, for his time