Application rate and nozzles associated with droplet electrification affect the spraying quality in common bean

ABSTRACT The objective of this work was to evaluate the application efficiency of different nozzle tips associated with increasing application rates. A field experiment was conducted in a factorial 3 × 4 randomized block design with four replicates. The first factor consisted of three types of nozzl...

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Veröffentlicht in:Revista brasileira de engenharia agrícola e ambiental 2024-02, Vol.28 (2)
Hauptverfasser: Mello, Carlos E. L., Carmo, Eduardo L. do, Braz, Guilherme B. P., Procópio, Sérgio de O., Simon, Gustavo A., Souza, Matheus de F., Araújo, Gabriel E. S. de, Lins, Hamurábi A.
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container_title Revista brasileira de engenharia agrícola e ambiental
container_volume 28
creator Mello, Carlos E. L.
Carmo, Eduardo L. do
Braz, Guilherme B. P.
Procópio, Sérgio de O.
Simon, Gustavo A.
Souza, Matheus de F.
Araújo, Gabriel E. S. de
Lins, Hamurábi A.
description ABSTRACT The objective of this work was to evaluate the application efficiency of different nozzle tips associated with increasing application rates. A field experiment was conducted in a factorial 3 × 4 randomized block design with four replicates. The first factor consisted of three types of nozzle tips (simple flat fan, hollow cone, and hollow cone with the electrification of the drops), and the second factor constituted the four application rates (50, 100, 200, and 250 L ha-1). Electrostatic technology and a hollow cone tip increased the deposited volume on leaves on the upper and medium strata of the common bean plant, regardless of the application rate used. The increase in the application rate increased the volume of spray solution captured in the upper, medium, and lower strata, the drop density, the volumetric median diameter (VMD), and the percentage of foliar coverage, regardless of the spray tip evaluated. The percentage of leaf coverage on the adaxial and abaxial leaf was not influenced by the simple fan or hollow cone spray tips, with or without the association of electrostatic technology. RESUMO O objetivo deste trabalho foi avaliar a eficiência de aplicação de diferentes pontas de bicos associada a taxas crescentes de aplicação. Foi conduzido um experimento de campo no delineamento em blocos ao acaso, em esquema fatorial 3 x 4, com quatro repetições. O primeiro fator consistiu em três tipos de bicos: leque plano simples, cone oco e cone oco com eletrificação das gotas; e o segundo fator por quatro taxas de aplicação (50, 100, 200 e 250 L ha-1). A tecnologia eletrostática e o cone oco aumentaram o volume depositado nas folhas dos estratos superior e médio do feijoeiro, independentemente da dose de aplicação utilizada. O aumento da taxa de aplicação aumentou o volume de calda captado nos estratos superior, médio e inferior do feijoeiro, a densidade de gotas, o diâmetro médio volumétrico (DMV) e a porcentagem de cobertura foliar, independente da ponta de pulverização avaliada. A porcentagem de cobertura foliar na face adaxial e abaxial não foi influenciada pelas pontas de pulverização em leque simples e cone oco com ou sem a associação da tecnologia eletrostática.
doi_str_mv 10.1590/1807-1929/agriambi.v28n2e273814
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Electrostatic technology and a hollow cone tip increased the deposited volume on leaves on the upper and medium strata of the common bean plant, regardless of the application rate used. The increase in the application rate increased the volume of spray solution captured in the upper, medium, and lower strata, the drop density, the volumetric median diameter (VMD), and the percentage of foliar coverage, regardless of the spray tip evaluated. The percentage of leaf coverage on the adaxial and abaxial leaf was not influenced by the simple fan or hollow cone spray tips, with or without the association of electrostatic technology. RESUMO O objetivo deste trabalho foi avaliar a eficiência de aplicação de diferentes pontas de bicos associada a taxas crescentes de aplicação. Foi conduzido um experimento de campo no delineamento em blocos ao acaso, em esquema fatorial 3 x 4, com quatro repetições. 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title Application rate and nozzles associated with droplet electrification affect the spraying quality in common bean
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