Pressure deficit of water vapor in the air in liquid dispensing using a hydropneumatic sprayer
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Revista de Ciências Agrárias (Belém. Online) |
Texto Completo: | https://ajaes.ufra.edu.br/index.php/ajaes/article/view/634 |
Resumo: | The spraying of pesticides requires knowledge of the weather conditions before, during and after operations in the field . Thus , the aim of this work was to evaluate the influence of water vapor pressure deficit in the air , the parameters of the spray produced by the tip of hollow cone JA - 2 in the orange crop . The spraying was performed using a hydropneumatic sprayer. The analysis of the drops was performed using a laser particle analyzer and hidrossenssíveis labels. To determine the volume of solution , we used the method of canopy volume based on the dimensions of the trees in the field. In selecting the volume index was considered the crown volume and historical volume sprayed in the area , and adopted 50 mL m - 3 . The volume sprayed was 696 L ha -1 . The experiment was arranged in a randomized complete block design with three replications . Data were subjected to analysis of variance , the F test , and the averages compared by Tukey test at 5 % probability . The largest percentage of target coverage was 33 % in the range of pressure of water vapor in the air from 1.38 to 1.45 kPa deficit. The greater density of droplets was 341 cm 2 drops in the range of pressure of water vapor in air 2.10 to 2.17 kPa deficit. The greatest deposition of solution on the leaves was 2.6 cm -2 ¶ l observed in vapor pressure from 0.76 to 0.86 kPa deficit. |
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Revista de Ciências Agrárias (Belém. Online) |
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Pressure deficit of water vapor in the air in liquid dispensing using a hydropneumatic sprayerDéficit de pressão de vapor d´água no ar na distribuição de líquido utilizando um pulverizador hidropneumáticoThe spraying of pesticides requires knowledge of the weather conditions before, during and after operations in the field . Thus , the aim of this work was to evaluate the influence of water vapor pressure deficit in the air , the parameters of the spray produced by the tip of hollow cone JA - 2 in the orange crop . The spraying was performed using a hydropneumatic sprayer. The analysis of the drops was performed using a laser particle analyzer and hidrossenssíveis labels. To determine the volume of solution , we used the method of canopy volume based on the dimensions of the trees in the field. In selecting the volume index was considered the crown volume and historical volume sprayed in the area , and adopted 50 mL m - 3 . The volume sprayed was 696 L ha -1 . The experiment was arranged in a randomized complete block design with three replications . Data were subjected to analysis of variance , the F test , and the averages compared by Tukey test at 5 % probability . The largest percentage of target coverage was 33 % in the range of pressure of water vapor in the air from 1.38 to 1.45 kPa deficit. The greater density of droplets was 341 cm 2 drops in the range of pressure of water vapor in air 2.10 to 2.17 kPa deficit. The greatest deposition of solution on the leaves was 2.6 cm -2 ¶ l observed in vapor pressure from 0.76 to 0.86 kPa deficit.A pulverização de agrotóxicos exige conhecimento das condições meteorológicas antes, durante e após as operações no campo. Deste modo, objetivou-se com este trabalho avaliar a influência do déficit de pressão de vapor d’água no ar, nos parâmetros da pulverização produzidos pela ponta de jato cônico vazio JA-2 na cultura da laranja. A pulverização foi realizada utilizando um pulverizador hidropneumático. A análise das gotas foi realizada utilizando-se o analisador de partículas a laser e etiquetas hidrossenssíveis. Para a determinação do volume de calda, empregou-se o método do volume de copa baseado nas dimensões das árvores no talhão. Na seleção do índice volumétrico considerou-se o volume da copa e o histórico de volume de calda pulverizado na área, sendo adotado 50 mL m-3. O volume de calda pulverizado foi de 696 L ha-1. O experimento foi montado no delineamento de blocos casualizados com três repetições. Os dados foram submetidos à análise de variância, pelo teste F, e as médias analisadas pelo teste de Tukey a 5% de probabilidade. A maior percentagem de cobertura do alvo foi de 33% no intervalo de déficit de pressão de vapor d’água no ar de 1,38 a 1,45 kPa. A maior densidade de gotas foi de 341 gotas cm-2 no intervalo de déficit de pressão de vapor d’água no ar de 2,10 a 2,17 kPa. A maior deposição da calda sobre as folhas foi de 2,6 µL cm-2 observado no déficit de pressão de vapor de 0,76 a 0,86 kPa.Universidade Federal Rural da Amazônia/UFRA2013-06-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://ajaes.ufra.edu.br/index.php/ajaes/article/view/634Amazonian Journal of Agricultural Sciences Journal of Agricultural and Environmental Sciences; Vol 56 No 2 (2013): RCA; 81-87Revista de Ciências Agrárias Amazonian Journal of Agricultural and Environmental Sciences; v. 56 n. 2 (2013): RCA; 81-872177-87601517-591Xreponame:Revista de Ciências Agrárias (Belém. Online)instname:Universidade Federal Rural da Amazônia (UFRA)instacron:UFRAporhttps://ajaes.ufra.edu.br/index.php/ajaes/article/view/634/297Alvarenga, Cleyton Batista deTeixeira, Mauri MartinsCecon, Paulo RobertoSiqueira, Dalmo Lopes deSasaki, Robson ShigueakiRodrigues, Denílson Eduardoinfo:eu-repo/semantics/openAccess2017-07-18T18:52:55Zoai:ojs.www.periodicos.ufra.edu.br:article/634Revistahttps://ajaes.ufra.edu.br/index.php/ajaes/PUBhttps://ajaes.ufra.edu.br/index.php/ajaes/oaiallan.lobato@ufra.edu.br || ajaes.suporte@gmail.com2177-87601517-591Xopendoar:2017-07-18T18:52:55Revista de Ciências Agrárias (Belém. Online) - Universidade Federal Rural da Amazônia (UFRA)false |
dc.title.none.fl_str_mv |
Pressure deficit of water vapor in the air in liquid dispensing using a hydropneumatic sprayer Déficit de pressão de vapor d´água no ar na distribuição de líquido utilizando um pulverizador hidropneumático |
title |
Pressure deficit of water vapor in the air in liquid dispensing using a hydropneumatic sprayer |
spellingShingle |
Pressure deficit of water vapor in the air in liquid dispensing using a hydropneumatic sprayer Alvarenga, Cleyton Batista de |
title_short |
Pressure deficit of water vapor in the air in liquid dispensing using a hydropneumatic sprayer |
title_full |
Pressure deficit of water vapor in the air in liquid dispensing using a hydropneumatic sprayer |
title_fullStr |
Pressure deficit of water vapor in the air in liquid dispensing using a hydropneumatic sprayer |
title_full_unstemmed |
Pressure deficit of water vapor in the air in liquid dispensing using a hydropneumatic sprayer |
title_sort |
Pressure deficit of water vapor in the air in liquid dispensing using a hydropneumatic sprayer |
author |
Alvarenga, Cleyton Batista de |
author_facet |
Alvarenga, Cleyton Batista de Teixeira, Mauri Martins Cecon, Paulo Roberto Siqueira, Dalmo Lopes de Sasaki, Robson Shigueaki Rodrigues, Denílson Eduardo |
author_role |
author |
author2 |
Teixeira, Mauri Martins Cecon, Paulo Roberto Siqueira, Dalmo Lopes de Sasaki, Robson Shigueaki Rodrigues, Denílson Eduardo |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Alvarenga, Cleyton Batista de Teixeira, Mauri Martins Cecon, Paulo Roberto Siqueira, Dalmo Lopes de Sasaki, Robson Shigueaki Rodrigues, Denílson Eduardo |
description |
The spraying of pesticides requires knowledge of the weather conditions before, during and after operations in the field . Thus , the aim of this work was to evaluate the influence of water vapor pressure deficit in the air , the parameters of the spray produced by the tip of hollow cone JA - 2 in the orange crop . The spraying was performed using a hydropneumatic sprayer. The analysis of the drops was performed using a laser particle analyzer and hidrossenssíveis labels. To determine the volume of solution , we used the method of canopy volume based on the dimensions of the trees in the field. In selecting the volume index was considered the crown volume and historical volume sprayed in the area , and adopted 50 mL m - 3 . The volume sprayed was 696 L ha -1 . The experiment was arranged in a randomized complete block design with three replications . Data were subjected to analysis of variance , the F test , and the averages compared by Tukey test at 5 % probability . The largest percentage of target coverage was 33 % in the range of pressure of water vapor in the air from 1.38 to 1.45 kPa deficit. The greater density of droplets was 341 cm 2 drops in the range of pressure of water vapor in air 2.10 to 2.17 kPa deficit. The greatest deposition of solution on the leaves was 2.6 cm -2 ¶ l observed in vapor pressure from 0.76 to 0.86 kPa deficit. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-06-03 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://ajaes.ufra.edu.br/index.php/ajaes/article/view/634 |
url |
https://ajaes.ufra.edu.br/index.php/ajaes/article/view/634 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://ajaes.ufra.edu.br/index.php/ajaes/article/view/634/297 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal Rural da Amazônia/UFRA |
publisher.none.fl_str_mv |
Universidade Federal Rural da Amazônia/UFRA |
dc.source.none.fl_str_mv |
Amazonian Journal of Agricultural Sciences Journal of Agricultural and Environmental Sciences; Vol 56 No 2 (2013): RCA; 81-87 Revista de Ciências Agrárias Amazonian Journal of Agricultural and Environmental Sciences; v. 56 n. 2 (2013): RCA; 81-87 2177-8760 1517-591X reponame:Revista de Ciências Agrárias (Belém. Online) instname:Universidade Federal Rural da Amazônia (UFRA) instacron:UFRA |
instname_str |
Universidade Federal Rural da Amazônia (UFRA) |
instacron_str |
UFRA |
institution |
UFRA |
reponame_str |
Revista de Ciências Agrárias (Belém. Online) |
collection |
Revista de Ciências Agrárias (Belém. Online) |
repository.name.fl_str_mv |
Revista de Ciências Agrárias (Belém. Online) - Universidade Federal Rural da Amazônia (UFRA) |
repository.mail.fl_str_mv |
allan.lobato@ufra.edu.br || ajaes.suporte@gmail.com |
_version_ |
1797231627119624192 |