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: effect of nitrogen source and clipping on the absorption of N, P, and K by Tifgreen bermudagrass (Cynodon dactylon x C. transvaalensis L.)
  name:
    name part: Reeves, Sim Adair.
    role:
      role term: creator
  name:
    name part: Creger, C. R.
    role:
      role term: degree committee member.
  name:
    name part: Joham, H. E.
    role:
      role term: degree supervisor.
  name:
    name part: McBee, George G.
    role:
      role term: degree supervisor.
  name:
    name part: Merkle, M. G.
    role:
      role term: degree committee member.
  name:
    name part: Swoboda, A. R.
    role:
      role term: degree committee member.
  name:
    name part: Texas A & M University
    role:
      role term: degree granting institution.
  type of resource: text
  genre: theses
  genre: Academic theses.
  origin info:
    place:
      place term: txu
    date issued: 1971
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: print
    extent: 114 leaves illustrations
  abstract: Three controlled environmental experiments were conducted using a hydroponic design to study effects of repeated clipping, various N, P, and K substrate levels, and N forms on the uptake of N, P, and K by Tifgreen Bermudagrass (Cynodon dactylon x C. transvaalensis L.). The levels of N, P, and K used were 300, 150, 25 ppm N; 5, 30, 90 ppm; and 50, 250, 400 ppm K. Plants, when harvested, were separated into three fractions, (roots, mat, and clippings) and each fraction analyzed for N, P, and K content. Clipping every three days over a 21 day period caused no significant changes in the total uptake of N, P, and K. The greatest variation in uptake was found in the mat fraction. Initial uptake curves for N, P, and K at three substrate levels over a six-day period indicated a direct relationship between substrate levels and rate of uptake. There was a direct relationship between N and K substrate levels and the dry weight of clippings removed, whereas an inverse relationship was observed for P substrate levels. ...
  note: Ph. D. in Plant and Soil Science Texas A & M University
  subject:
    topic: Major plant and soil science
  classification: SB433 .R432 1971
  identifier: http://proxy.library.tamu.edu/login
  identifier: https://hdl.handle.net/1969.1/DISSERTATIONS-173093
  related item:
    location:
      url: http://proxy.library.tamu.edu/login
  related item:
    location:
      url: https://hdl.handle.net/1969.1/DISSERTATIONS-173093
  record info:
    record content source: TXA
    record creation date: 791116
    record change date: 20220103135406.0
    record identifier: in00000161644
    language of cataloging:
      language term: eng