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: Lime requirement for coastal plain soils
  name:
    name part: Rao, Renuka B.
    role:
      role term: creator
  type of resource: text
  genre: bibliography
  origin info:
    place:
      place term: xx
    date issued: 1995
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: print
    extent: xxii, 193 leaves : illustrations ; 28 cm.
  abstract: A diverse group of forage crops grown in acid soils in Texas, range from highly pH sensitive alfalfa to relatively pH insensitive bermudagrass. Although the chemical attributes of East Texas Timberlands and their lime responsiveness have been well documented, there is little published information on appropriate lime application rates to overcome acidity problems. Adoption of any currently available laboratory methods for making lime recommendations in Texas has been delayed due to lack of critical evaluation of these methods. Our objectives were to 1) Study the effect of lime on soil parameters and crop yields; 2) Compare and evaluate the LR methods in the laboratory; 3) Calibrate the. laboratory LR methods against LR obtained from field incubation. Applied limestone increased soil pH in all the soils but the pH response to liming changed over the course of the study when the experiment was continued for more than one season/year. Lime rates >2.24 Mg ha- I decreased 0.01M CaCI2 and IM KCI extractable Al to < I mg kg-'. Lime treatments with 100% effective calcium carbonate equivalent (ECCE) produced a higher soil pH than 62% ECCE limestone because of its increased surface area and therefore, greater reactivity. Lime rates applied to the soils, which have pH values of 4.2 to 4.9, were sufficient to neutralize all of the exchange Al and raise the pH values to range of 5.3 to 6.7. Coastal bermudagrass did not respond to lime at half of the locations because it is tolerant to a wide range of soil properties. Marshall ryegrass was more responsive to lime due to its moderate tolerance to Al. Increased clover yields were negatively correlated with exchangeable Al and exchange acidity at all sites. Wheat (TAM 200) was responsive to lime only at one location. The SMP-single, SMP-double and Yuan double buffers were well and about equally suited as methods to predict LR to achieve pH 6.5 and 7.0 in the laboratory and field experiments. The double buffers had greater accuracy at…
  note: by Renuka B. Rao.
  note: Vita.
  note: "Major Subject: Soil Science".
  note: Issued also on microfiche from University Microfilms Inc.
  note: Includes bibliographical references.
  note: Ph. D. Texas A&M University 1995.
  subject:
    topic: Major soil science
  identifier: 96-15873 UMI
  identifier: http://proxy.library.tamu.edu/login
  related item:
    location:
      url: http://proxy.library.tamu.edu/login
  record info:
    record content source: TXA
    record creation date: 961010
    record change date: 20190325093224.0
    record identifier: in00001321337