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    <ns1:definition xml:lang="en">Direct length measurement of randomly sampled blades</ns1:definition>
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    <ns4:attribute>Mn content</ns4:attribute>
    <ns4:entity>Kelp</ns4:entity>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Biochemical"/>
    <ns1:definition xml:lang="en">Mn content</ns1:definition>
    <ns4:acronym xml:lang="en">MNC</ns4:acronym>
    <rdfs:label xml:lang="en">Mn content</rdfs:label>
  </ns2:Class>
  <ns2:Class rdf:about="https://cropontology.org/rdf/CO_360:0000231">
    <rdfs:label xml:lang="en">Fouling area</rdfs:label>
    <ns4:entity>Kelp</ns4:entity>
    <ns4:acronym xml:lang="en">FOA</ns4:acronym>
    <ns1:definition xml:lang="en">Fouling area</ns1:definition>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Biotic_stress"/>
    <ns4:attribute>Fouling area</ns4:attribute>
  </ns2:Class>
  <ns2:Class rdf:about="https://cropontology.org/rdf/CO_360:0000229">
    <ns4:entity>Kelp</ns4:entity>
    <ns1:definition xml:lang="en">Percent dry weight of tissue sample</ns1:definition>
    <ns4:attribute>Percent dry weight</ns4:attribute>
    <rdfs:label xml:lang="en">Percent dry weight of tissue sample</rdfs:label>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Morphological"/>
    <ns4:acronym xml:lang="en">TSPDW</ns4:acronym>
  </ns2:Class>
  <ns2:Class rdf:about="https://cropontology.org/rdf/CO_360:0000218">
    <rdfs:label xml:lang="en">Presence of white patches - Measurement</rdfs:label>
    <ns1:definition xml:lang="en">Presence or absence of white patches</ns1:definition>
    <rdfs:subClassOf>
      <ns2:Restriction rdf:nodeID="N0e529398be6a4c5ab6fabc8c2730829c">
        <ns2:onProperty rdf:resource="https://cropontology.org/rdf/method_of"/>
        <ns2:someValuesFrom rdf:resource="https://cropontology.org/rdf/CO_360:0000234"/>
      </ns2:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Measurement"/>
  </ns2:Class>
  <ns2:ObjectProperty rdf:about="https://cropontology.org/rdf/method_of">
    <rdfs:label>method_of</rdfs:label>
  </ns2:ObjectProperty>
  <ns2:Class rdf:about="https://cropontology.org/rdf/CO_360:0000281">
    <rdfs:label xml:lang="en">Dry weight of combined subplots - Measurement</rdfs:label>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Measurement"/>
    <rdfs:subClassOf>
      <ns2:Restriction rdf:nodeID="Nf2eab9fb94ca49f48f54c490db5bb57b">
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        <ns2:someValuesFrom rdf:resource="https://cropontology.org/rdf/CO_360:0000283"/>
      </ns2:Restriction>
    </rdfs:subClassOf>
    <ns1:definition xml:lang="en">Direct measurement of the dry weight of all sampled 1cm subplots</ns1:definition>
  </ns2:Class>
  <ns2:Class rdf:about="https://cropontology.org/rdf/CO_360:0000024">
    <ns1:definition xml:lang="en">Stipe length</ns1:definition>
    <ns4:attribute>Length</ns4:attribute>
    <ns4:acronym xml:lang="en">SL</ns4:acronym>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Morphological"/>
    <rdfs:label xml:lang="en">Stipe length</rdfs:label>
    <ns4:entity>Stipe</ns4:entity>
  </ns2:Class>
  <ns2:Class rdf:about="https://cropontology.org/rdf/CO_360:0000233">
    <ns1:definition xml:lang="en">Presence of herbivores</ns1:definition>
    <ns4:entity>Kelp</ns4:entity>
    <ns4:attribute>Presence of herbivores</ns4:attribute>
    <rdfs:label xml:lang="en">Presence of herbivores</rdfs:label>
    <ns4:acronym xml:lang="en">HEP</ns4:acronym>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Biotic_stress"/>
  </ns2:Class>
  <ns2:Class rdf:about="https://cropontology.org/rdf/CO_360:0000288">
    <ns1:definition xml:lang="en">Direct measurement of the dry weight of the entire plot</ns1:definition>
    <rdfs:label xml:lang="en">Dry weight of plot - Measurement</rdfs:label>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Measurement"/>
    <rdfs:subClassOf>
      <ns2:Restriction rdf:nodeID="Nf347dc00edea4123bc34c8ae2b985ba4">
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        <ns2:someValuesFrom rdf:resource="https://cropontology.org/rdf/CO_360:0000272"/>
      </ns2:Restriction>
    </rdfs:subClassOf>
  </ns2:Class>
  <ns2:Class rdf:about="https://cropontology.org/rdf/CO_360:0000226">
    <ns1:definition xml:lang="en">Presence of sori</ns1:definition>
    <rdfs:label xml:lang="en">Presence of sori</rdfs:label>
    <ns4:acronym xml:lang="en">SOP</ns4:acronym>
    <ns4:attribute>Presence of sori</ns4:attribute>
    <ns4:entity>Kelp</ns4:entity>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Morphological"/>
  </ns2:Class>
  <ns2:Class rdf:about="https://cropontology.org/rdf/CO_360:0000294">
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Measurement"/>
    <ns1:definition xml:lang="en">Done by New Jersey Feed Labs </ns1:definition>
    <rdfs:subClassOf>
      <ns2:Restriction rdf:nodeID="N058fa6c62b504d1ca65ecb3248199dba">
        <ns2:someValuesFrom rdf:resource="https://cropontology.org/rdf/CO_360:0000295"/>
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      </ns2:Restriction>
    </rdfs:subClassOf>
    <rdfs:label xml:lang="en">Moisture content - Measurement</rdfs:label>
  </ns2:Class>
  <ns2:Class rdf:about="https://cropontology.org/rdf/CO_360:0000205">
    <rdfs:label xml:lang="en">Stipe diameter - Measurement</rdfs:label>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Measurement"/>
    <ns1:definition xml:lang="en">Direct measurement of the diameter of the stipe</ns1:definition>
    <rdfs:subClassOf>
      <ns2:Restriction rdf:nodeID="N77e8a6d0fb6d497ba78f02de7b3ab01e">
        <ns2:someValuesFrom rdf:resource="https://cropontology.org/rdf/CO_360:0000223"/>
        <ns2:onProperty rdf:resource="https://cropontology.org/rdf/method_of"/>
      </ns2:Restriction>
    </rdfs:subClassOf>
  </ns2:Class>
  <ns2:Class rdf:about="https://cropontology.org/rdf/CO_360:0000132">
    <ns4:attribute>Pb content</ns4:attribute>
    <ns4:acronym xml:lang="en">PBC</ns4:acronym>
    <ns1:definition xml:lang="en">Pb content</ns1:definition>
    <ns4:entity>Kelp</ns4:entity>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Biochemical"/>
    <rdfs:label xml:lang="en">Pb content</rdfs:label>
  </ns2:Class>
  <ns2:Class rdf:about="https://cropontology.org/rdf/CO_360:0000228">
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Morphological"/>
    <rdfs:label xml:lang="en">Tissue sample weight</rdfs:label>
    <ns4:acronym xml:lang="en">TSW</ns4:acronym>
    <ns4:attribute>Tissue sample weight</ns4:attribute>
    <ns1:definition xml:lang="en">Tissue sample weight</ns1:definition>
    <ns4:entity>Kelp</ns4:entity>
  </ns2:Class>
  <ns2:Class rdf:about="https://cropontology.org/rdf/CO_360:0000282">
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Measurement"/>
    <rdfs:label xml:lang="en">Sampled subplot count - Measurement</rdfs:label>
    <rdfs:subClassOf>
      <ns2:Restriction rdf:nodeID="Nae651b3094e04fe58191f0f49c4503d4">
        <ns2:someValuesFrom rdf:resource="https://cropontology.org/rdf/CO_360:0000284"/>
        <ns2:onProperty rdf:resource="https://cropontology.org/rdf/method_of"/>
      </ns2:Restriction>
    </rdfs:subClassOf>
    <ns1:definition xml:lang="en">Direct count of the number of subplots sampled from within a plot</ns1:definition>
  </ns2:Class>
  <ns2:Class rdf:about="https://cropontology.org/rdf/CO_360:0000053">
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Measurement"/>
    <ns1:definition xml:lang="en">Done by New Jersey Feed Labs </ns1:definition>
    <rdfs:subClassOf>
      <ns2:Restriction rdf:nodeID="Nf370cab4a3014afbaac94451ab8b8248">
        <ns2:onProperty rdf:resource="https://cropontology.org/rdf/method_of"/>
        <ns2:someValuesFrom rdf:resource="https://cropontology.org/rdf/CO_360:0000052"/>
      </ns2:Restriction>
    </rdfs:subClassOf>
    <rdfs:label xml:lang="en">Ash content - Measurement</rdfs:label>
  </ns2:Class>
  <ns2:Class rdf:about="https://cropontology.org/rdf/CO_360:0000209">
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Estimation"/>
    <rdfs:subClassOf>
      <ns2:Restriction rdf:nodeID="N6ceb68660575474b86a35d8c99d205a6">
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        <ns2:someValuesFrom rdf:resource="https://cropontology.org/rdf/CO_360:0000227"/>
      </ns2:Restriction>
    </rdfs:subClassOf>
    <rdfs:label xml:lang="en">Sorus area - Estimation</rdfs:label>
    <ns1:definition xml:lang="en">Visual estimation of area covered by sori</ns1:definition>
  </ns2:Class>
  <ns2:Class rdf:about="https://cropontology.org/rdf/CO_360:0000284">
    <ns4:attribute>Sampled subplot count</ns4:attribute>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Agronomic"/>
    <rdfs:label xml:lang="en">Sampled subplot count</rdfs:label>
    <ns1:definition xml:lang="en">The count of the number of sampled subplots (1cm subsamples)</ns1:definition>
    <ns4:acronym xml:lang="en">SPTC</ns4:acronym>
    <ns4:entity>Subplot</ns4:entity>
  </ns2:Class>
  <ns2:Class rdf:about="https://cropontology.org/rdf/CO_360:0000230">
    <ns1:definition xml:lang="en">Presence of fouling</ns1:definition>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Biotic_stress"/>
    <ns4:entity>Kelp</ns4:entity>
    <ns4:attribute>Presence of fouling</ns4:attribute>
    <ns4:acronym xml:lang="en">FOP</ns4:acronym>
    <rdfs:label xml:lang="en">Presence of fouling</rdfs:label>
  </ns2:Class>
  <ns2:Class rdf:about="https://cropontology.org/rdf/CO_360:0000185">
    <rdfs:label xml:lang="en">stipe composition</rdfs:label>
    <rdfs:subClassOf>
      <rdf:Description rdf:about="https://cropontology.org/rdf/Nominal">
        <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Scale"/>
      </rdf:Description>
    </rdfs:subClassOf>
    <rdfs:subClassOf>
      <ns2:Restriction rdf:nodeID="N28992285bacf43658af1423bff756541">
        <ns2:someValuesFrom rdf:resource="https://cropontology.org/rdf/CO_360:0000206"/>
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      </ns2:Restriction>
    </rdfs:subClassOf>
  </ns2:Class>
  <ns2:Class rdf:about="https://cropontology.org/rdf/CO_360:0000289">
    <rdfs:subClassOf>
      <ns2:Restriction rdf:nodeID="Na54776a3d8054096908b86ecffe18485">
        <ns2:someValuesFrom rdf:resource="https://cropontology.org/rdf/CO_360:0000266"/>
        <ns2:onProperty rdf:resource="https://cropontology.org/rdf/method_of"/>
      </ns2:Restriction>
    </rdfs:subClassOf>
    <rdfs:label xml:lang="en">Plot blade count - Measurement</rdfs:label>
    <ns1:definition xml:lang="en">Direct count of the number of blades in the entire plot</ns1:definition>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Measurement"/>
  </ns2:Class>
  <ns2:Class rdf:about="https://cropontology.org/rdf/CO_360:0000222">
    <rdfs:label xml:lang="en">Blade thickness</rdfs:label>
    <ns4:attribute>Thickness</ns4:attribute>
    <ns4:acronym xml:lang="en">BT</ns4:acronym>
    <ns4:entity>Blade</ns4:entity>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Morphological"/>
    <ns1:definition xml:lang="en">Blade thickness</ns1:definition>
  </ns2:Class>
  <ns2:Class rdf:about="https://cropontology.org/rdf/CO_360:0000223">
    <rdfs:label xml:lang="en">Stipe diameter</rdfs:label>
    <ns4:acronym xml:lang="en">SD</ns4:acronym>
    <ns4:entity>Stipe</ns4:entity>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Morphological"/>
    <ns1:definition xml:lang="en">Stipe diameter</ns1:definition>
    <ns4:attribute>Diameter</ns4:attribute>
  </ns2:Class>
  <ns2:Class rdf:about="https://cropontology.org/rdf/CO_360:0000212">
    <ns1:definition xml:lang="en">Direct measurement of the dried weight of a tissue sample</ns1:definition>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Measurement"/>
    <rdfs:subClassOf>
      <ns2:Restriction rdf:nodeID="N77f1dae5da5143078148254ecf6cf496">
        <ns2:someValuesFrom rdf:resource="https://cropontology.org/rdf/CO_360:0000228"/>
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      </ns2:Restriction>
    </rdfs:subClassOf>
    <rdfs:label xml:lang="en">Dry weight of tissue sample - Measurement</rdfs:label>
  </ns2:Class>
  <ns2:Class rdf:about="https://cropontology.org/rdf/CO_360:0000156">
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Biochemical"/>
    <ns4:attribute>Cr content</ns4:attribute>
    <ns4:acronym xml:lang="en">CRC</ns4:acronym>
    <ns1:definition xml:lang="en">Cr content</ns1:definition>
    <ns4:entity>Kelp</ns4:entity>
    <rdfs:label xml:lang="en">Cr content</rdfs:label>
  </ns2:Class>
  <ns2:Class rdf:about="https://cropontology.org/rdf/CO_360:0000295">
    <ns4:acronym xml:lang="en">MC</ns4:acronym>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Biochemical"/>
    <rdfs:label xml:lang="en">Moisture content</rdfs:label>
    <ns4:entity>Kelp</ns4:entity>
    <ns4:attribute>Moisture content</ns4:attribute>
    <ns1:definition xml:lang="en">Moisture content</ns1:definition>
  </ns2:Class>
  <ns2:Class rdf:about="https://cropontology.org/rdf/CO_360:0000207">
    <rdfs:label xml:lang="en">Presence of bullations - Measurement</rdfs:label>
    <rdfs:subClassOf>
      <ns2:Restriction rdf:nodeID="N78360ccce03d44fbba675b183dd2cb0d">
        <ns2:someValuesFrom rdf:resource="https://cropontology.org/rdf/CO_360:0000225"/>
        <ns2:onProperty rdf:resource="https://cropontology.org/rdf/method_of"/>
      </ns2:Restriction>
    </rdfs:subClassOf>
    <ns1:definition xml:lang="en">Presence or absence of bullations</ns1:definition>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Measurement"/>
  </ns2:Class>
  <ns2:Class rdf:about="https://cropontology.org/rdf/CO_360:0000196">
    <rdfs:subClassOf>
      <ns2:Restriction rdf:nodeID="N7e2664138faa4bc09b4249a66db30a50">
        <ns2:someValuesFrom rdf:resource="https://cropontology.org/rdf/CO_360:0000222"/>
        <ns2:onProperty rdf:resource="https://cropontology.org/rdf/method_of"/>
      </ns2:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Measurement"/>
    <rdfs:label xml:lang="en">Blade thickness - Measurement</rdfs:label>
    <ns1:definition xml:lang="en">Direct thickness measurement of randomly sampled blades</ns1:definition>
  </ns2:Class>
  <ns2:Class rdf:about="https://cropontology.org/rdf/CO_360:0000008">
    <rdfs:label xml:lang="en">Blade length</rdfs:label>
    <ns4:acronym xml:lang="en">BL</ns4:acronym>
    <ns1:definition xml:lang="en">Blade length</ns1:definition>
    <ns4:attribute>Length</ns4:attribute>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Morphological"/>
    <ns4:entity>Blade</ns4:entity>
  </ns2:Class>
  <ns2:Class rdf:about="https://cropontology.org/rdf/CO_360:0000144">
    <ns4:acronym xml:lang="en">ALC</ns4:acronym>
    <ns4:entity>Kelp</ns4:entity>
    <rdfs:label xml:lang="en">Al content</rdfs:label>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Biochemical"/>
    <ns1:definition xml:lang="en">Al content</ns1:definition>
    <ns4:attribute>Al content</ns4:attribute>
  </ns2:Class>
  <ns2:Class rdf:about="https://cropontology.org/rdf/CO_360:0000206">
    <rdfs:subClassOf>
      <ns2:Restriction rdf:nodeID="Nb0bae269fbf74f28b575ddf3e6893b6b">
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        <ns2:someValuesFrom rdf:resource="https://cropontology.org/rdf/CO_360:0000224"/>
      </ns2:Restriction>
    </rdfs:subClassOf>
    <rdfs:label xml:lang="en">Stipe composition - Measurement</rdfs:label>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Measurement"/>
    <ns1:definition xml:lang="en">Composition of the stipe (either hollow if there is any hollow portion, or solid if completely solid)</ns1:definition>
  </ns2:Class>
  <ns2:Class rdf:about="https://cropontology.org/rdf/CO_360:0000290">
    <ns1:definition xml:lang="en">Direct count of the number of blades in a 1cm subsample of a plot</ns1:definition>
    <rdfs:subClassOf>
      <ns2:Restriction rdf:nodeID="Nfb21e9e26e8a411f95d395e6cdbc512c">
        <ns2:someValuesFrom rdf:resource="https://cropontology.org/rdf/CO_360:0000266"/>
        <ns2:onProperty rdf:resource="https://cropontology.org/rdf/method_of"/>
      </ns2:Restriction>
    </rdfs:subClassOf>
    <rdfs:label xml:lang="en">Subplot blade count - Measurement</rdfs:label>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Measurement"/>
  </ns2:Class>
  <ns2:Class rdf:about="https://cropontology.org/rdf/CO_360:0000280">
    <ns1:definition xml:lang="en">Direct measurement of the wet weight of all sampled 1cm subplots</ns1:definition>
    <rdfs:label xml:lang="en">Wet weight of combined subplots - Measurement</rdfs:label>
    <rdfs:subClassOf>
      <ns2:Restriction rdf:nodeID="N7ebf1fe599894c6fb7897cd0b6eeeec0">
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      </ns2:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Measurement"/>
  </ns2:Class>
  <ns2:Class rdf:about="https://cropontology.org/rdf/CO_360:0000048">
    <ns1:definition xml:lang="en">Lipid content </ns1:definition>
    <ns4:attribute>Lipid content</ns4:attribute>
    <rdfs:label xml:lang="en">Lipid content</rdfs:label>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Biochemical"/>
    <ns4:entity>Kelp</ns4:entity>
    <ns4:acronym xml:lang="en">LC</ns4:acronym>
  </ns2:Class>
  <ns2:Class rdf:about="https://cropontology.org/rdf/CO_360:0000108">
    <ns4:acronym xml:lang="en">ZNC</ns4:acronym>
    <ns1:definition xml:lang="en">Zn content</ns1:definition>
    <ns4:entity>Kelp</ns4:entity>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Biochemical"/>
    <rdfs:label xml:lang="en">Zn content</rdfs:label>
    <ns4:attribute>Zn content</ns4:attribute>
  </ns2:Class>
  <ns2:Class rdf:about="https://cropontology.org/rdf/CO_360:0000084">
    <ns4:acronym xml:lang="en">CLC</ns4:acronym>
    <ns1:definition xml:lang="en">Cl content</ns1:definition>
    <ns4:entity>Kelp</ns4:entity>
    <rdfs:label xml:lang="en">Cl content</rdfs:label>
    <ns4:attribute>Cl content</ns4:attribute>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Biochemical"/>
  </ns2:Class>
  <ns2:Class rdf:about="https://cropontology.org/rdf/CO_360:0000184">
    <rdfs:subClassOf>
      <ns2:Restriction rdf:nodeID="Naf22ccb7ed214f99b35b8c0565158606">
        <ns2:onProperty rdf:resource="https://cropontology.org/rdf/scale_of"/>
        <ns2:someValuesFrom rdf:resource="https://cropontology.org/rdf/CO_360:0000205"/>
      </ns2:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf>
      <ns2:Restriction rdf:nodeID="Na5f78f3a271140a1b28e2a58cdc8bf3e">
        <ns2:someValuesFrom rdf:resource="https://cropontology.org/rdf/CO_360:0000196"/>
        <ns2:onProperty rdf:resource="https://cropontology.org/rdf/scale_of"/>
      </ns2:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Numerical"/>
    <rdfs:label xml:lang="en">mm</rdfs:label>
  </ns2:Class>
  <ns2:Class rdf:about="https://cropontology.org/rdf/CO_360:0000234">
    <rdfs:label xml:lang="en">Presence of white patches</rdfs:label>
    <ns1:definition xml:lang="en">Presence of white patches</ns1:definition>
    <ns4:entity>Kelp</ns4:entity>
    <ns4:acronym xml:lang="en">WPP</ns4:acronym>
    <ns4:attribute>Presence of white patches</ns4:attribute>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Biotic_stress"/>
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