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  <titleInfo>
    <title>Methodologies in the evaluation of forage mass in tree legumes</title>
  </titleInfo>
  <name type="personal">
    <namePart>Oliveira, João Tiago Correia</namePart>
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  <name type="personal">
    <namePart>Lira, Mario de Andrade</namePart>
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  <name type="personal">
    <namePart>Santos, Mércia Virginia Ferreira dos</namePart>
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  <name type="personal">
    <namePart>Freire, Fernando José</namePart>
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  <name type="personal">
    <namePart>Dubeux Júnior, José Carlos Batista</namePart>
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  <name type="personal">
    <namePart>Freitas, Erinaldo Viana de</namePart>
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  <name type="personal">
    <namePart>Costa, Suellen Brandão de Miranda da</namePart>
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  <abstract>


ABSTRACT:      To choose the method of forage mass estimation (FM), consider the plant species, required accuracy and available technology. In this sense, the objective was to evaluate the methods of determination of direct FM and comparative visual per-formance with five and 10 patterns, in the trees Gliricidia (Gliricidia sepium Jacq.) and Sabiá (Mimosa caesalpiniifolia Benth.) At heights up to 1,5 m above the soil and whole plant (1.65 to 1.90 m for Gliricidia and from 3.63 to 5.03 m for Sabiá, with averages of 1.80 and 4.24 m, respectively), using the plant as a unit sample. The evaluations were performed every 28 days for one year, 2012 to 2013. The trees were cultivated in silvopastoral system with brachiaria, under continuous stocking of cattle with initial weight of ± 175 kg. The methods analyzed by regression in the collection cycles and annually and compared by the 5% F test. At the evaluated times it is possible to estimate the FM production by the indirect method, with no differences in the number of standards. The average annual FM of 118.547 kg in 2,250 plants of Gliricidia ha-1, slightly varying between heights. At Sabiá the annual average FM was 398.241 and 702.281 kg in 2,250 ha-1 plants, at heights of up to 1.5 m above the ground and whole plant, respectively. The use of the plant as a sample unit, allowed high determination coefficients above 0.800 in the annual analyzes, for the indirect method  



.Key words:      comparative visual income; direct method; forage production</abstract>
  <abstract>


RESUMO:      Para escolha do método de estimativa de massa de forragem (MF) deve-se considerar a espécie vegetal, precisão requerida e tecnologia disponíveis. Neste sentido, objetivou-se avaliar os métodos de determinação de MF direto e rendimento visual comparativo com cinco e 10 padrões, nas arbóreas Gliricídia (Gliricidia  sepium Jacq.) e Sabiá (Mimosa  caesalpiniifolia  Benth.) nas alturas até 1,5 m acima do solo e planta inteira (1,65 a 1,90 m para Gliricídia e de 3,63 a 5,03 m para Sabiá, com médias de 1,80 e 4,24 m, respectivamente), utilizando-se a planta como unidade amostral. As avaliações realizadas a cada 28 dias por um ano, 2012 a 2013. As árvores eram cultivadas em sistema silvipastoril com braquiária, sob lotação continua de bovinos com peso inicial de ±175 kg. Os métodos analisados por regressão nos ciclos de coleta e anualmente e comparados pelo teste F a 5%. Nas alturas avaliadas é possível estimar a produção de MF pelo método indireto, não havendo diferenças quanto ao número de padrões. A MF média anual de 118,547 kg em 2.250 plantas de Gliricídia ha-1, pouco variando entre as alturas. Na Sabiá a MF média anual foi de 398,241 e 702,281 kg em 2.250 plantas ha-1, nas alturas de até 1,5 m acima do solo e planta inteira, respectivamente. A utilização da planta como unidade amostral, possibilitou altos coeficientes de determinação acima de 0,800 nas análises anuais, para o método indireto. 



Palavras-chave:      rendimento visual comparativo; método direto; produção de forragem</abstract>
  <note>

Publicação online; 25 ref.; 3 tables; Summaries (En, Pt)</note>
  <subject>
    <topic>LEGUMINOSA ARBÓREA</topic>
  </subject>
  <subject>
    <topic>FORRAGEM</topic>
  </subject>
  <subject>
    <topic>PRODUÇÃO</topic>
  </subject>
  <subject>
    <topic>MORFOLOGIA VEGETAL</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>2026-0843</identifier>
    <identifier type="issn">1981-1160</identifier>
    <identifier type="local">BR2025005645</identifier>
    <part>
      <text>v. 13(1) p. 1-7; (2018)</text>
    </part>
  </relatedItem>
  <identifier type="uri">http://www.agraria.pro.br/ojs32/index.php/RBCA/article/view/v13i1a5500/367</identifier>
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    <url>http://www.agraria.pro.br/ojs32/index.php/RBCA/article/view/v13i1a5500/367</url>
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    <recordCreationDate encoding="marc">260305</recordCreationDate>
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