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  <titleInfo>
    <title>Effect of salicylic acid in two stages of application on wheat crop</title>
  </titleInfo>
  <name type="personal">
    <namePart>Dias, Roque Carvalho</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
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  </name>
  <name type="personal">
    <namePart>Melo, Christiane Augusta Diniz</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
    </role>
  </name>
  <name type="personal">
    <namePart>Tropaldi, Leandro</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
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  </name>
  <name type="personal">
    <namePart>Silva, Paulo Vinicius</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
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  </name>
  <name type="personal">
    <namePart>Silva, Daniel Valadão</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
    </role>
  </name>
  <name type="personal">
    <namePart>Reis, Marcelo Rodrigues</namePart>
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      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
    </role>
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  <abstract>


ABSTRACT:      Salicylic acid (SA) is a plant growth regulator and participates in several physiological and biochemical processes. Its use can assist in the growth, development, productivity and quality of several crops. Thus, the objective of this work was to evaluate the effect of salicylic acid in two application stages on wheat crop. The experiment was conducted under field conditions and designed as randomized blocks, with four replications. Treatments 0.5 and 1.0 mM of SA were applied in stages 1 and 10, beginning and end of vegetative growth of wheat plants, besides a control treatment (without SA). Phytointoxication and SPAD index evaluations were performed at 14, 21, 28, and 35 days after application (DAA) of SA and the end of the experiment, 109 DAA the plants were tracked to quantify the mass of a thousand grains, hectoliter weight and grain yield. The application of SA did not cause symptoms of phytointoxication and increased the values of the SPAD index and all components of grain yield compared to the control treatment (without SA). The application of SA promoted a greater increase in the variables analyzed when applied in stage 10 of wheat plants. 



Key words:      grain yield; growth regulator; Poaceae; Triticum aestivum L</abstract>
  <abstract>


RESUMO:      O ácido salicílico (AS) é um regulador de crescimento de plantas e participa de diversos processos fisiológicos e bioquímicos.  Seu  uso  pode  auxiliar  no  crescimento,  desenvolvimento,  rendimento  de  grãos  e  qualidade  de  diversas  culturas.  Assim,  o  objetivo  desse  trabalho  foi  avaliar  o  efeito  do  ácido  salicílico  em  dois  estádios  de  aplicação  na  cultura  do  trigo.  O  experimento  foi  realizado  em  campo  no  delineamento  em  blocos  casualizados  com  quatro  repetições.  Os  tratamentos  0,5  e  1,0 mM de AS foram aplicados no estádio 1 e 10,  início e final do crescimento vegetativo, respectivamente, das plantas de trigo, além de um tratamento controle (sem AS). Foram realizadas avaliações de fitointoxicação e índice SPAD aos 14, 21, 28 e 35 dias após a aplicação (DAA) do AS e ao final do experimento, 109 dias após a semeadura as plantas foram trilhadas para quantificação da massa de mil grãos, peso do hectolitro e rendimento de grãos. A aplicação de AS não provocou sintomas de fitointoxicação e aumentou os valores do índice SPAD e todos os componentes do rendimento de grãos em comparação ao tratamento  controle  (sem  AS).  A  aplicação  de  AS  promoveu  maior  incremento  nas  variáveis  analisadas  quando  aplicada  no  estádio 10 das plantas de trigo. 



Palavras-chave:      rendimento de grãos; regulador de crescimento; Poaceae; Triticum aestivum L </abstract>
  <note>

Publicação online; 45 ref.; 3 illus.; Summaries (En, Pt)</note>
  <subject>
    <topic>TRIGO</topic>
  </subject>
  <subject>
    <topic>ÁCIDO SALICÍLICO</topic>
  </subject>
  <subject>
    <topic>REGULADOR DE CRESCIMENTO</topic>
  </subject>
  <subject>
    <topic>RENDIMENTO</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>2026-2115</identifier>
    <identifier type="issn">1981-1160</identifier>
    <identifier type="local">BR2026000631</identifier>
    <part>
      <text>v. 16(3) p. 1-7; (2021)</text>
    </part>
  </relatedItem>
  <identifier type="uri">http://www.agraria.pro.br/ojs32/index.php/RBCA/article/view/v16i3a8374/759</identifier>
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    <url>http://www.agraria.pro.br/ojs32/index.php/RBCA/article/view/v16i3a8374/759</url>
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    <recordCreationDate encoding="marc">260521</recordCreationDate>
    <recordChangeDate encoding="iso8601">20260521091922.0</recordChangeDate>
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