Influence of nozzle type, speed, and pressure on droplet size and weed control from glyphosate, dicamba, and glyphosate plus dicamba
Main Author: | |
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Publication Date: | 2018 |
Other Authors: | , , , , |
Format: | Conference object |
Language: | eng |
Source: | Repositório Institucional da UNESP |
Download full: | http://dx.doi.org/10.1520/STP761020170249 http://hdl.handle.net/11449/221237 |
Summary: | Improper or suboptimal application techniques can cause decreased weed control and increased environmental contamination. Droplet size is a key factor in pesticide applications in regard to both drift and efficacy. Droplet size can be altered by several application parameters, such as nozzle type, pressure, orifice size, and spray solution. The objective of this study was to evaluate the influence of nozzle type, application speed, and pressure when using glyphosate, dicamba, or glyphosate plus dicamba on droplet size and control of common lambsquarters, velvetleaf, kochia, and grain sorghum. The study was conducted with two herbicides, glyphosate at 0.77 kg ae ha -1 and dicamba at 0.56 kg ae ha -1 , tested alone and in combination. The application rate was 94 L ha -1 at three different speeds (8, 16, and 24 kph), and the pressures used were low, medium, and high for each speed and orifice size combination. The pressures were combined with the appropriate orifice size to deliver a fixed spray volume. An XR, AIXR, and TTI nozzle were used (two of which are venturi nozzle designs). The droplet size ranged from 219 to 232 μm for the XR nozzle across the three solutions, 440 to 482 μm for the AIXR nozzle, and 740 to 828 μm for the TTI nozzle. Solutions using dicamba resulted in the largest droplet size, followed by glyphosate and then the combination. There were no significant interactions for nozzle x herbicide across all species. |
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Influence of nozzle type, speed, and pressure on droplet size and weed control from glyphosate, dicamba, and glyphosate plus dicambaApplication parametersDriftOrifice sizeTank mixtureVenturi nozzleImproper or suboptimal application techniques can cause decreased weed control and increased environmental contamination. Droplet size is a key factor in pesticide applications in regard to both drift and efficacy. Droplet size can be altered by several application parameters, such as nozzle type, pressure, orifice size, and spray solution. The objective of this study was to evaluate the influence of nozzle type, application speed, and pressure when using glyphosate, dicamba, or glyphosate plus dicamba on droplet size and control of common lambsquarters, velvetleaf, kochia, and grain sorghum. The study was conducted with two herbicides, glyphosate at 0.77 kg ae ha -1 and dicamba at 0.56 kg ae ha -1 , tested alone and in combination. The application rate was 94 L ha -1 at three different speeds (8, 16, and 24 kph), and the pressures used were low, medium, and high for each speed and orifice size combination. The pressures were combined with the appropriate orifice size to deliver a fixed spray volume. An XR, AIXR, and TTI nozzle were used (two of which are venturi nozzle designs). The droplet size ranged from 219 to 232 μm for the XR nozzle across the three solutions, 440 to 482 μm for the AIXR nozzle, and 740 to 828 μm for the TTI nozzle. Solutions using dicamba resulted in the largest droplet size, followed by glyphosate and then the combination. There were no significant interactions for nozzle x herbicide across all species.University of Nebraska-Lincoln Dept. of Agronomy and Horticulture, 402 W. State Farm Rd.São Paulo State University, R. Dr. José Barbosa de Barros, 1780University of Nebraska-Lincoln Panhandle Research and Extension Center, 4502 Ave. IU.S. Dept. of Agriculture Agriculture Research Services Aerial Application Technology Research Unit, 3103 F and B Rd.São Paulo State University, R. Dr. José Barbosa de Barros, 1780Dept. of Agronomy and HorticultureUniversidade Estadual Paulista (UNESP)Panhandle Research and Extension CenterAerial Application Technology Research UnitRodrigues, Andre O.Campos, Lucas G. [UNESP]Creech, Cody F.Fritz, Bradley K.Antuniassi, Ulisses R. [UNESP]Kruger, Greg R.2022-04-28T19:26:57Z2022-04-28T19:26:57Z2018-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject61-75http://dx.doi.org/10.1520/STP761020170249ASTM Special Technical Publication, v. STP 1610, p. 61-75.0066-0558http://hdl.handle.net/11449/22123710.1520/STP7610201702492-s2.0-85060386296Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengASTM Special Technical Publicationinfo:eu-repo/semantics/openAccess2022-04-28T19:26:57Zoai:repositorio.unesp.br:11449/221237Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-28T19:26:57Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Influence of nozzle type, speed, and pressure on droplet size and weed control from glyphosate, dicamba, and glyphosate plus dicamba |
title |
Influence of nozzle type, speed, and pressure on droplet size and weed control from glyphosate, dicamba, and glyphosate plus dicamba |
spellingShingle |
Influence of nozzle type, speed, and pressure on droplet size and weed control from glyphosate, dicamba, and glyphosate plus dicamba Rodrigues, Andre O. Application parameters Drift Orifice size Tank mixture Venturi nozzle |
title_short |
Influence of nozzle type, speed, and pressure on droplet size and weed control from glyphosate, dicamba, and glyphosate plus dicamba |
title_full |
Influence of nozzle type, speed, and pressure on droplet size and weed control from glyphosate, dicamba, and glyphosate plus dicamba |
title_fullStr |
Influence of nozzle type, speed, and pressure on droplet size and weed control from glyphosate, dicamba, and glyphosate plus dicamba |
title_full_unstemmed |
Influence of nozzle type, speed, and pressure on droplet size and weed control from glyphosate, dicamba, and glyphosate plus dicamba |
title_sort |
Influence of nozzle type, speed, and pressure on droplet size and weed control from glyphosate, dicamba, and glyphosate plus dicamba |
author |
Rodrigues, Andre O. |
author_facet |
Rodrigues, Andre O. Campos, Lucas G. [UNESP] Creech, Cody F. Fritz, Bradley K. Antuniassi, Ulisses R. [UNESP] Kruger, Greg R. |
author_role |
author |
author2 |
Campos, Lucas G. [UNESP] Creech, Cody F. Fritz, Bradley K. Antuniassi, Ulisses R. [UNESP] Kruger, Greg R. |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Dept. of Agronomy and Horticulture Universidade Estadual Paulista (UNESP) Panhandle Research and Extension Center Aerial Application Technology Research Unit |
dc.contributor.author.fl_str_mv |
Rodrigues, Andre O. Campos, Lucas G. [UNESP] Creech, Cody F. Fritz, Bradley K. Antuniassi, Ulisses R. [UNESP] Kruger, Greg R. |
dc.subject.por.fl_str_mv |
Application parameters Drift Orifice size Tank mixture Venturi nozzle |
topic |
Application parameters Drift Orifice size Tank mixture Venturi nozzle |
description |
Improper or suboptimal application techniques can cause decreased weed control and increased environmental contamination. Droplet size is a key factor in pesticide applications in regard to both drift and efficacy. Droplet size can be altered by several application parameters, such as nozzle type, pressure, orifice size, and spray solution. The objective of this study was to evaluate the influence of nozzle type, application speed, and pressure when using glyphosate, dicamba, or glyphosate plus dicamba on droplet size and control of common lambsquarters, velvetleaf, kochia, and grain sorghum. The study was conducted with two herbicides, glyphosate at 0.77 kg ae ha -1 and dicamba at 0.56 kg ae ha -1 , tested alone and in combination. The application rate was 94 L ha -1 at three different speeds (8, 16, and 24 kph), and the pressures used were low, medium, and high for each speed and orifice size combination. The pressures were combined with the appropriate orifice size to deliver a fixed spray volume. An XR, AIXR, and TTI nozzle were used (two of which are venturi nozzle designs). The droplet size ranged from 219 to 232 μm for the XR nozzle across the three solutions, 440 to 482 μm for the AIXR nozzle, and 740 to 828 μm for the TTI nozzle. Solutions using dicamba resulted in the largest droplet size, followed by glyphosate and then the combination. There were no significant interactions for nozzle x herbicide across all species. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-01-01 2022-04-28T19:26:57Z 2022-04-28T19:26:57Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1520/STP761020170249 ASTM Special Technical Publication, v. STP 1610, p. 61-75. 0066-0558 http://hdl.handle.net/11449/221237 10.1520/STP761020170249 2-s2.0-85060386296 |
url |
http://dx.doi.org/10.1520/STP761020170249 http://hdl.handle.net/11449/221237 |
identifier_str_mv |
ASTM Special Technical Publication, v. STP 1610, p. 61-75. 0066-0558 10.1520/STP761020170249 2-s2.0-85060386296 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
ASTM Special Technical Publication |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
61-75 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1797789269588180992 |