<?xml version="1.0" encoding="UTF-8"?><marc:collection xmlns:marc="http://www.loc.gov/MARC21/slim">
  <marc:record>
    <marc:leader>00000nam  2200000zi 4500</marc:leader>
    <marc:controlfield tag="001">9.951321</marc:controlfield>
    <marc:controlfield tag="003">CaOODSP</marc:controlfield>
    <marc:controlfield tag="005">20250530141004</marc:controlfield>
    <marc:controlfield tag="006">m     o  d f      </marc:controlfield>
    <marc:controlfield tag="007">cr bn|||||||||</marc:controlfield>
    <marc:controlfield tag="008">250523e19991025sncd    o    f000 0 eng d</marc:controlfield>
    <marc:datafield tag="040" ind1=" " ind2=" ">
      <marc:subfield code="a">CaOODSP</marc:subfield>
      <marc:subfield code="b">eng</marc:subfield>
      <marc:subfield code="e">rda</marc:subfield>
      <marc:subfield code="c">CaOODSP</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="086" ind1="1" ind2=" ">
      <marc:subfield code="a">A52-327/1999E-PDF</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="100" ind1="1" ind2=" ">
      <marc:subfield code="a">Campbell, C. A. </marc:subfield>
      <marc:subfield code="q">(Constantine A.), </marc:subfield>
      <marc:subfield code="d">1934- </marc:subfield>
      <marc:subfield code="e">author.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="245" ind1="1" ind2="0">
      <marc:subfield code="a">Harvesting straw : </marc:subfield>
      <marc:subfield code="b">will it affect soil quality? / </marc:subfield>
      <marc:subfield code="c">C.A. Campbell, G.P. Lafond, F. Selles, and V.O. Biederbeck.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="264" ind1=" " ind2="1">
      <marc:subfield code="a">Swift Current, Saskatchewan : </marc:subfield>
      <marc:subfield code="b">Semiarid Prairie Agricultural Research Centre : </marc:subfield>
      <marc:subfield code="b">Agriculture and Agri-Food Canada, Research Branch = Agriculture et agro-alimentaire Canada, Direction générale de la recherche, </marc:subfield>
      <marc:subfield code="c">October 25, 1999.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="300" ind1=" " ind2=" ">
      <marc:subfield code="a">1 online resource (2 pages, 5 unnumbered pages) : </marc:subfield>
      <marc:subfield code="b">graphs</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="336" ind1=" " ind2=" ">
      <marc:subfield code="a">text</marc:subfield>
      <marc:subfield code="b">txt</marc:subfield>
      <marc:subfield code="2">rdacontent</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="337" ind1=" " ind2=" ">
      <marc:subfield code="a">computer</marc:subfield>
      <marc:subfield code="b">c</marc:subfield>
      <marc:subfield code="2">rdamedia</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="338" ind1=" " ind2=" ">
      <marc:subfield code="a">online resource</marc:subfield>
      <marc:subfield code="b">cr</marc:subfield>
      <marc:subfield code="2">rdacarrier</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="500" ind1=" " ind2=" ">
      <marc:subfield code="a">Digitized edition from print [provided by Agriculture and Agri-Food Canada].</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="520" ind1=" " ind2=" ">
      <marc:subfield code="a">"It is well know that soil organic matter, whether measured in terms of Carbon or Nitrogen, increases with increasing rates of crop residues returned to the land. This being so, one would expect to find that continued harvesting of straw will eventually lead to a decrease in soil organic matter. But does it? The answer to this question seems to vary depending on the studies that have been conducted on this subject"--Page 1.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="650" ind1=" " ind2="0">
      <marc:subfield code="a">Straw</marc:subfield>
      <marc:subfield code="x">Harvesting.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="650" ind1=" " ind2="0">
      <marc:subfield code="a">Soils</marc:subfield>
      <marc:subfield code="z">Quality.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="650" ind1=" " ind2="6">
      <marc:subfield code="a">Paille</marc:subfield>
      <marc:subfield code="x">Récolte.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="650" ind1=" " ind2="6">
      <marc:subfield code="a">Sols</marc:subfield>
      <marc:subfield code="x">Qualité.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="710" ind1="2" ind2=" ">
      <marc:subfield code="a">Semiarid Prairie Agricultural Research Centre (Canada), </marc:subfield>
      <marc:subfield code="e">issuing body.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="710" ind1="1" ind2=" ">
      <marc:subfield code="a">Canada. </marc:subfield>
      <marc:subfield code="b">Agriculture and Agri-Food Canada. </marc:subfield>
      <marc:subfield code="b">Research Branch, </marc:subfield>
      <marc:subfield code="e">issuing body.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="856" ind1="4" ind2="0">
      <marc:subfield code="q">PDF</marc:subfield>
      <marc:subfield code="s">806 KB</marc:subfield>
      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2025/aac-aafc/A52-327-1999-eng.pdf</marc:subfield>
    </marc:datafield>
  </marc:record>
</marc:collection>
