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  <titleInfo>
    <title>Spectrum of spray droplets with different nozzles and adjuvants</title>
  </titleInfo>
  <name type="personal">
    <namePart>Lopes, Luana de Lima</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
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  </name>
  <name type="personal">
    <namePart>Reis, Elton Fialho dos</namePart>
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  <abstract>


ABSTRACT:      Successful  application  of  agrochemicals  depends  on  factors  such  as  the  droplet  size,  nozzle  type  and  solution  composition. In this context, the objective of this study was to evaluate the spectrum of spray droplets with different spray nozzles by means of direct measurement. The experiment was conducted in a completely randomized design, with a factorial scheme 2 x 4 x 2 + 2 (nozzles x adjuvants x concentrations + controls), with four replicates. Used nozzles were the CVI 11002 and TVI 800075, the  adjuvants  were  the  Break-Thru®,  Haiten®,  Iharaguen-S®  and  Orix®  additives  added  to  the  solution  at  the  concentrations  of  100 and 150%, and the control, without adjuvant. A particulate analyzer was used to obtain the droplet spectrum. The diameter of the volumetric median, diameter of the numerical median, relative amplitude and percentage of the volume of droplets smaller than 100 μm. The spray nozzle CVI 11002 presented the diameter of the favorable volumetric median for the solutions application and safety against drift and a more homogeneous droplet spectrum. The Break-Thru® adjuvant had lower risk of drift, and the increased concentration of Orix® adjuvant increased the homogeneity of the droplet spectrum.  



Key words:      application technology; image analysis; real droplet size</abstract>
  <abstract>


RESUMO:     O  êxito  na  aplicação  de  produtos  fitossanitários  depende  de  fatores  como  tamanho  de  gota,  tipo  de  ponta  e composição da calda. Nesse contexto, objetivou-se avaliar a interferência de adjuvantes, adicionados a calda de pulverização, no desempenho das pontas quanto às características de espectro de gotas gerado por meio de medição direta. O experimento foi conduzido em delineamento inteiramente ao acaso, com esquema fatorial 2 x 4 x 2 + 2 (pontas x adjuvantes x concentrações dos adjuvantes + testemunhas), com quatro repetições. Foram utilizados as pontas CVI 11002 e TVI 800075, os adjuvantes Break-Thru®,  Haiten®,  Iharaguen-S®  e  Orix®  adicionados  à  calda  nas  concentrações  de  100  e  150%,  e  a  testemunha,  sem  adjuvante.  Para  a  obtenção  do  espectro  de  gotas  foi  utilizado  um  analisador  de  partículas  por  imagens.  Foram  avaliados  o  diâmetro  da  mediana  volumétrica,  diâmetro  da  mediana  numérica,  amplitude  relativa  e  percentagem  do  volume  de  gotas  menores de 100 μm. A ponta de pulverização CVI 11002 apresentou o diâmetro da mediana volumétrica favorável para a aplicação das caldas e segurança contra deriva e espectro de gotas mais homogêneo. O adjuvante Break-Thru® apresentou menor risco à deriva e o aumento da concentração do adjuvante Orix® elevou a homogeneidade do espectro das gotas.  



Palavras-chave:       tecnologia de aplicação; análise de imagens; tamanho real de gotas</abstract>
  <note>

Publicação online; 32 ref.; 6 tables; Summaries (En, Pt)</note>
  <subject>
    <topic>PULVERIZAÇÃO</topic>
  </subject>
  <subject>
    <topic>TECNOLOGIA APROPRIADA</topic>
  </subject>
  <subject>
    <topic>DEFESA 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>2026-1730</identifier>
    <identifier type="issn">1981-1160</identifier>
    <identifier type="local">BR2026000526</identifier>
    <part>
      <text>v. 15(2) p. 1-6; (2020)</text>
    </part>
  </relatedItem>
  <identifier type="uri">http://www.agraria.pro.br/ojs32/index.php/RBCA/article/view/v15i2a6552/74</identifier>
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    <url>http://www.agraria.pro.br/ojs32/index.php/RBCA/article/view/v15i2a6552/74</url>
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    <recordCreationDate encoding="marc">260428</recordCreationDate>
    <recordChangeDate encoding="iso8601">20260428152558.0</recordChangeDate>
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      <languageTerm authority="iso639-2b" type="code">eng</languageTerm>
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