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: Soil phosphorus status and fertilizer use in select agricutural soils in Nicaragua
  name:
    name part: Niemeyer, Patrick G.
    role:
      role term: creator
  type of resource: text
  genre: bibliography
  origin info:
    place:
      place term: xx
    date issued: 2001
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: print
    form: remote
    extent: viii, 123 leaves : illustrations ; 28 cm.
  abstract: A survey of small, medium and large Nicaraguan producers indicated a heavy reliance on imported complete fertilizer. Analysis of soils sampled from the large-scale commercial producers found low P retention in the lowland heavy clay soils. These soils contained high amounts of plant available P as indicated by four soil P testing methods, Texas A&M, Bray I, Mehlich III and Olsen. These same methods extracted less P from soils from Pacific coast volcanic lowlands and central highland uplands, indicating significant P retention in soils of these two regions. These findings are supported by a greenhouse study in which an indicator crop grown in the lowland clay soils demonstrated no response to added P. A high response in the indicator crop was observed in the volcanic lowland and central highland soils. Correlation between the four P extraction methods and plant response in the volcanic lowland and central highland soils was high, indicating all methods were adequate for these soils. A statistical correlation of the P quantities extracted by the four methods from all soils in the study found that all methods correlated well, indicating that all methods are adequate for the soils in the study. A phosphorus fractionation method found lowland-clay soils were dominated by the Ca-P fraction. The predominant fractions in volcanic lowland and central highland soils were Fe-P and Al-P.
  note: by Patrick G. Niemeyer.
  note: "Major subject: Soil Science".
  note: Vita.
  note: Also available online.
  note: Issued also on microfiche from Lange Micrographics.
  note: M.S. Texas A&M University 2001.
  note: Includes bibliographical references (leaves 89-95).
  subject:
    topic: Major soil science
  identifier: https://hdl.handle.net/1969.1/ETD-TAMU-2001-THESIS-N61
  related item:
    location:
      url: https://hdl.handle.net/1969.1/ETD-TAMU-2001-THESIS-N61
  record info:
    record content source: TXA
    record creation date: 020605
    record change date: 20220103134508.0
    record identifier: in00001696269