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  <titleInfo>
    <title>Correlations between plant height and light interception in grasses by different light meter devices</title>
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  <name type="personal">
    <namePart>Coelho, Janerson José</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
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  <name type="personal">
    <namePart>Santos, Erick Rodrigo da Silva</namePart>
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  <name type="personal">
    <namePart>Cunha, Márcio Vieira da</namePart>
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  <name type="personal">
    <namePart>Santos, Mércia Virginia Ferreira dos</namePart>
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    </role>
  </name>
  <name type="personal">
    <namePart>Dubeux Júnior, José Carlos Batista</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
    </role>
  </name>
  <name type="personal">
    <namePart>Mello, Alexandre Carneiro Leão de</namePart>
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      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
    </role>
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  <genre authority="marc">abstract or summary</genre>
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  <abstract>


ABSTRACT:      This  study  tested  if  the  type  of  light  meter  device  can  influence  the  relationships  between  plant  canopy  height with  light  interception  (LI)  and  leaf  area  index  (LAI),  in  different  types  of  warm-season  grasses.  LI  and  LAI  were  measured  using  Digital  Plant  Canopy  Imager  model  120  (CI-120)  (CID  Bio-science®)  and  Plant  Canopy  Analyzer  LAI-2000  (LI-COR®). Seven warm-season grasses were evaluated Urochloa decumbens (Stapf) R.D. Webster.; Urochloa ruziziensis (R.Germ. &amp; C.M. Evrard)  Crins;  Megathyrsus  maximum  (Jacq.)  B.K.  Simon  &amp;  S.W.L.  Jacobs  cv.  Tanzânia,  M.  maximum  (Jacq.)  B.K.  Simon  &amp;  S.W.L. Jacobs cv. Mombaça, Pennisetum purpureum Schumach. cv. Mott, P. purpureum Schumach. cv. Taiwan A-146 2.37, P.   purpureum Schumach. cv. Roxo. There was a predominance of non-significant correlations between canopy height with LI and LAI measured using CI-120 ( p &gt; 0.05). Moderate to strong correlations were obtained between canopy height with LI and LAI measured using LAI-2000 (p &lt; 0.01). LAI-2000 was found to be a potential device for modelling relationships between canopy height  with  LI/LAI  in  warm-season  grasses.  The  findings  of  this  trial  indicate  that  the  type  of  light  meter  device  has  a  strong influence on the correlations between canopy height and light interception in warm-season grasses. 



Key words:      forage growth; leaf area index; sward; tropical grasses</abstract>
  <abstract>


RESUMO:   Este  estudo  testou  se  diferentes  dispositivos  medidores  de  luz  podem  influenciar  nas  relações  entre  a  altura  do dossel com a interceptação luminosa (IL) e o índice de área foliar (IAF), em diferentes tipos de gramíneas tropicais. A IL e o IAF foram medidos usando o Digital Plant Canopy Imager modelo 120 (CI-120) (CID Bio-science®) e o Plant Canopy Analyzer LAI-2000 (LI-COR®). Sete gramíneas tropicais foram avaliadas Urochloa decumbens (Stapf) R.D. Webster.; Urochloa ruziziensis(R.Germ. &amp; C.M. Evrard) Crins; Megathyrsus maximum (Jacq.) B.K. Simon &amp; S.W.L. Jacobs cv. Tanzânia, M. maximum (Jacq.) B.K. Simon &amp; S.W.L. Jacobs cv. Mombaça, Pennisetum purpureum Schumach. cv. Mott, P. purpureum Schumach. cv. Taiwan A-146 2.37, P. purpureum Schumach. cv. Roxo. Houve predomínio de correlações não significativas entre a altura do dossel com a IL e o IAF medidos pelo CI-120 (p &gt; 0,05). Foram obtidas correlações de moderadas a fortes entre a altura do dossel com a IL e o IAF medidos utilizando o LAI-2000 (p &lt; 0,01). LAI-2000 apresentou-se como um dispositivo com potencial para modelar relações entre a altura do dossel com o IL e IAF em gramíneas tropicais. Os resultados deste estudo indicam que o tipo de dispositivo medidor de luz tem uma forte influência nas correlações entre a altura do dossel e a interceptação luminosa em gramíneas.  



Palavras-chave:      crescimento forrageiro; índice de área foliar; dossel; gramíneas tropicais</abstract>
  <note>

Publicação online; 16 ref.; 3 tables; Summaries (En, Pt)</note>
  <subject>
    <topic>GRAMÍNEA TROPICAL</topic>
  </subject>
  <subject>
    <topic>CRESCIMENTO</topic>
  </subject>
  <subject>
    <topic>RADIAÇÃO LUMINOSA</topic>
  </subject>
  <subject>
    <topic>ALTURA</topic>
  </subject>
  <subject>
    <topic>ÁREA FOLIAR</topic>
  </subject>
  <relatedItem type="host">
    <titleInfo>
      <title>Revista Brasileira de Ciências Agrárias (Brazil)</title>
    </titleInfo>
    <originInfo>
      <publisher>Recife-PE Universidade Federal Rural de Pernambuco 2006</publisher>
    </originInfo>
    <identifier>2026-1925</identifier>
    <identifier type="issn">1981-1160</identifier>
    <identifier type="local">BR2026000580</identifier>
    <part>
      <text>v. 15(4) p. 1-6; (2020)</text>
    </part>
  </relatedItem>
  <identifier type="uri">http://www.agraria.pro.br/ojs32/index.php/RBCA/article/view/v15i4a8494/17</identifier>
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    <url>http://www.agraria.pro.br/ojs32/index.php/RBCA/article/view/v15i4a8494/17</url>
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    <recordCreationDate encoding="marc">260511</recordCreationDate>
    <recordChangeDate encoding="iso8601">20260511185509.0</recordChangeDate>
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      <languageTerm authority="iso639-2b" type="code">eng</languageTerm>
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