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Filtering by: Alternative title ssim Range plant leaflet 57 Remove constraint Alternative title ssim: Range plant leaflet 57 Creator Alkoshab, Othman Remove constraint Creator: Alkoshab, Othman Degree Field Horticulture Remove constraint Degree Field: Horticulture

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  • An evaluation of the Diagnosis and Recommendation Integrated System (DRIS) on hazelnuts (Corylus avellana) in Oregon

    Creator:
    Alkoshab, Othman
    Abstract:
    This study evaluates Beufil's Diagnosis and Recommendation Integrated System (DRIS) on hazelnuts. Although sufficiency ranges are currently the main approach for fertilizer recommendations in Oregon, DRIS enhanced nutritional interpretations, and might alter recommendations. Reference values (DRIS norms) were developed using 15 years of published and unpublished field data. DRIS indices...
    Resource Type:
    Masters Thesis
    Full Text:
    many soil and plant diagnostic methods (57). It is difficult to find a chemical extractant for

  • Chilling and nutritional requirements of fruit trees in Yemen

    Creator:
    Alkoshab, Othman
    Abstract:
    A portion of this study was initiated to provide the basis for implementing a chill unit accumulation procedure in Yemen. Most continuous or daily minimum, maximum temperature models severely underestimated chilling units, and slight modifications offered little improvement for the complex models. Only the Crossa Raynaud formula approximated generally accepted...
    Resource Type:
    Dissertation
    Full Text:
    sufficiency range method. DRIS was excellent in predicting relative nutrient responses. CHILLING AND