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  <titleInfo>
    <title>Determinación de dosis óptimas económicas de nitrógeno, fósforo y densidad de población en el cultivo de trigo (Tritricum vulgare) variedad balanya-80 en el departamento de Chimaltenango</title>
  </titleInfo>
  <name type="personal">
    <namePart>Estrada Aja, Mike Roberto.</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
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  <typeOfResource>text</typeOfResource>
  <originInfo>
    <place>
      <placeTerm type="code" authority="marccountry">gt</placeTerm>
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    <place>
      <placeTerm type="text">Guatemala, Guatemala</placeTerm>
    </place>
    <publisher>El autor</publisher>
    <dateIssued>1981</dateIssued>
    <dateIssued encoding="marc" point="start">1981</dateIssued>
    <issuance>monographic</issuance>
  </originInfo>
  <language>
    <languageTerm authority="iso639-2b" type="code">spa</languageTerm>
  </language>
  <physicalDescription>
    <extent>40 h.</extent>
  </physicalDescription>
  <note>Tesis (Ing. Agr.) -- Universidad de San Carlos de Guatemala. Facultad de Agronomía</note>
  <subject>
    <topic>Fósforo</topic>
    <topic>Efecto en trigo</topic>
  </subject>
  <subject>
    <topic>Nitrógeno</topic>
    <topic>Efecto en trigo</topic>
  </subject>
  <subject>
    <topic>Trigo</topic>
    <topic>Espaciamiento</topic>
  </subject>
  <subject>
    <topic>Trigo</topic>
    <topic>Guatemala</topic>
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  <subject>
    <topic>Trigo</topic>
    <topic>Rendimiento</topic>
  </subject>
  <subject>
    <topic>Trigo</topic>
    <topic>Variedades</topic>
  </subject>
  <identifier type="lccn">75269</identifier>
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    <recordCreationDate encoding="marc">980407</recordCreationDate>
    <recordChangeDate encoding="iso8601">20220329141902.0</recordChangeDate>
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