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:
    title: Optimization of grain sorghum water use efficiency under high frequency irrigation by system simulation and stochastic dynamic programming
  name:
    name part: Howell, Terry Allen.
    role:
      role term: creator
  name:
    name part: Hiler, E. A.
    role:
      role term: degree supervisor.
  name:
    name part: Jordan, W. R.
    role:
      role term: degree committee member.
  name:
    name part: Runkles, J. R.
    role:
      role term: degree committee member.
  name:
    name part: Wilkes, L. H.
    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: 1974
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: print
    extent: 223 leaves illustrations
  abstract: Water deficits reduce plant growth and subsequently, crop yields. Man has relied upon irrigation to overcome these crop water deficiencies. But since the present supplies of water are limited, more efficient irrigation application methods must be developed and utilized effectively. High frequency irrigation has been shown to be an efficient means more minimizing crop water deficits while maximizing irrigation application efficiency. This research evaluated the effects of high frequency irrigation on grain sorghum growth and yield and developed guidelines for the optimal utilization of a scarce resource--water--under high frequency irrigation. An experiment was conducted in fully instrumented field lysimeters which had undisturbed soil cores. Rainfall was eliminated as a variable by an automated movable shelter which protected the lysimeters from rain. The field measurements that were made in each lysimeter were soil water content, leaf temperature, leaf resistance, leaf water potential, leaf area index, and crop height. Measurements of windspeed, air temperature, dew-point temperature, and net radiation were made above the crop. The yield and water use efficiency of grain sorghum under high frequency irrigation was decreased primarily by water deficits occurring during the boot-to-bloom growth period. Water use efficiency was increased when water deficits were carefully managed by applying small, frequent applications of water and avoiding large deficits during the boot-to-bloom period. ...
  note: Ph. D. in Agricultural Engineering Texas A & M University
  subject:
    topic: Major agricultural engineering
  identifier: http://proxy.library.tamu.edu/login
  identifier: https://hdl.handle.net/1969.1/DISSERTATIONS-171202
  related item:
    location:
      url: http://proxy.library.tamu.edu/login
  related item:
    location:
      url: https://hdl.handle.net/1969.1/DISSERTATIONS-171202
  record info:
    record content source: TXA
    record creation date: 791113
    record change date: 20220103135242.0
    record identifier: in00000152214
    language of cataloging:
      language term: eng