rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    non sort: The
    title: influence of fertilization, phloem restriction, irrigation, microbes, and ethephon on pecan shuck disorders in Texas
  name:
    name part: Stein, Larry A.
    role:
      role term: creator
  name:
    name part: Halliwell, Robert S.
    role:
      role term: degree committee member.
  name:
    name part: McEachern, George Ray
    role:
      role term: degree supervisor.
  name:
    name part: Reed, David Wm
    role:
      role term: degree committee member.
  name:
    name part: Storey, J. Benton
    role:
      role term: degree committee member.
  name:
    name part: Taber, Ruth Ann
    role:
      role term: degree committee member.
  name:
    name part: Texas A & M University
    role:
      role term: degree granting institution.
  type of resource: text
  genre: bibliography
  genre: Academic theses
  origin info:
    place:
      place term: xx
    date issued: 1985
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: print
    extent: xxxii, 314 leaves : illustrations ; 29 cm
  abstract: Shuck disorders are a common production problem of Texas pecan producers. The shuck disorders observed in this study were not caused by stem end blight or shuck dieback. The principal shuck disorders studied were called sticktights. Four types of sticktights were observed: green, water stress, west Texas, and north Texas. All were characterized by poor kernel development. Three fertilization systems were evaluated: traditional ground applications, foliar sprays, and repeated ground applications. Traditional ground rates included a standard 112, high 224, and a very high 448 kg N/ha. Foliar sprays supplied 134, 79, or 11 kg N/ha plus some micronutrients. The repeated ground application gave a total of 400 kg N/ha. The high (224 kg N/ha) and foliar (134 kg N/ha) rates had the least number of sticktights. Lower (11, 79, and 112 kg N/ha) and higher (400 and 448 kg N/ha) rates had the most sticktights. The custom foliar spray failed to increase tissue nutrient levels although the Harvest Plus spray did increase the leaf micronutrient contents. There was a strong positive correlation between yield and sticktights. The sutures had more Ca and less K than the area between the sutures. There was a net movement of P, K, Ca, Mg, Cu, Mn, and Mo away from the sutures at shuck split. Trunk and limb clamps had a negative effect on tree growth with little effect on pecan quality and sticktights. An increase in carbohydrates and C/N ratio was not detectable which was attributed to feedback inhibition. Four irrigation frequencies were examined: weekly, 3 week, tensiometer, and no water. Significant differences in the tree water stress were found between the treatments, although no correlations were found between levels of stress and sticktights. The tensiometer treatments had the least sticktight percentage followed by the 3 week, weekly, and no water treatments respectively. In a microbe study, isolations from pecan shucks with sticktight symptoms yielded Phoma sp., Coniothyrium sp.…
  note: "Major subject: Horticulture."
  note: Typescript (photocopy).
  note: Vita.
  note: Ph. D. Texas A & M University 1985
  note: Includes bibliographical references (leaves 262-277).
  subject:
    geographic code: n-us-tx
  subject:
    topic: Pecan
    topic: Diseases and pests
    geographic: Texas
  subject:
    topic: Major horticulture
  subject:
    topic: Pecan
    topic: Diseases and pests
  subject:
    geographic: Texas
  identifier: http://proxy.library.tamu.edu/login
  identifier: https://hdl.handle.net/1969.1/DISSERTATIONS-447652
  related item:
    location:
      url: http://proxy.library.tamu.edu/login
  related item:
    location:
      url: https://hdl.handle.net/1969.1/DISSERTATIONS-447652
  record info:
    record content source: TXA
    record creation date: 870410
    record change date: 20220103135015.0
    record identifier: in00000433564
    language of cataloging:
      language term: eng