Droplet deposition during spray and leaf pH in aquatic weed control
Autor(a) principal: | |
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Data de Publicação: | 2005 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Scientia Agrícola (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000300005 |
Resumo: | The morphological diversity of leaf surface and structures such as trichomes, stomata, cuticle, and waxes that exists among plant species can have great influence on the adherence and deposition of spray droplets, as well as on herbicide absorption. The aim of this research was to study leaf pH and to evaluate wetting areas after applications of solution surfactants on the following aquatic weeds: Enhydra anagallis, Eichhornia crassipes, Heteranthera reniformis, and Typha subulata. The aquatic weeds were grown in reservoirs containing water under open air conditions and their leaf tissues were collected when the plants reached full development (before flowering). The mean leaf pH varied between 5.50 and 7.50; E. anagallis should be pointed out for presenting the highest pH values, of 6.68 and 7.02 on the upper and lower leaf surfaces, respectively. Surface tension reduction for glyphosate alone (5.0% v v-1), glyphosate + Aterbane BR (5.0% + 0.5% v v-1), glyphosate + Silwet L-77 (5.0% + 0.05% v v-1), and surfactants alone, Aterbane BR (0.5% v v-1), and Silwet L-77 (0.05% v v-1), were, respectively: 72.1; 28.7; 23.3; 37.3, and 22.1 mN m-1.T. subulata was the aquatic species with the highest upper and lower leaf surface wetting area. |
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Droplet deposition during spray and leaf pH in aquatic weed controlaquatic weedglyphosatesurface tensionwettingThe morphological diversity of leaf surface and structures such as trichomes, stomata, cuticle, and waxes that exists among plant species can have great influence on the adherence and deposition of spray droplets, as well as on herbicide absorption. The aim of this research was to study leaf pH and to evaluate wetting areas after applications of solution surfactants on the following aquatic weeds: Enhydra anagallis, Eichhornia crassipes, Heteranthera reniformis, and Typha subulata. The aquatic weeds were grown in reservoirs containing water under open air conditions and their leaf tissues were collected when the plants reached full development (before flowering). The mean leaf pH varied between 5.50 and 7.50; E. anagallis should be pointed out for presenting the highest pH values, of 6.68 and 7.02 on the upper and lower leaf surfaces, respectively. Surface tension reduction for glyphosate alone (5.0% v v-1), glyphosate + Aterbane BR (5.0% + 0.5% v v-1), glyphosate + Silwet L-77 (5.0% + 0.05% v v-1), and surfactants alone, Aterbane BR (0.5% v v-1), and Silwet L-77 (0.05% v v-1), were, respectively: 72.1; 28.7; 23.3; 37.3, and 22.1 mN m-1.T. subulata was the aquatic species with the highest upper and lower leaf surface wetting area.Escola Superior de Agricultura "Luiz de Queiroz"2005-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000300005Scientia Agricola v.62 n.3 2005reponame:Scientia Agrícola (Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/S0103-90162005000300005info:eu-repo/semantics/openAccessCosta,Neumárcio Vilanova daMartins,DagobertoRodella,Roberto AntonioCosta,Lívia Duarte Neves de Camargo daeng2005-06-03T00:00:00Zoai:scielo:S0103-90162005000300005Revistahttp://revistas.usp.br/sa/indexPUBhttps://old.scielo.br/oai/scielo-oai.phpscientia@usp.br||alleoni@usp.br1678-992X0103-9016opendoar:2005-06-03T00:00Scientia Agrícola (Online) - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
Droplet deposition during spray and leaf pH in aquatic weed control |
title |
Droplet deposition during spray and leaf pH in aquatic weed control |
spellingShingle |
Droplet deposition during spray and leaf pH in aquatic weed control Costa,Neumárcio Vilanova da aquatic weed glyphosate surface tension wetting |
title_short |
Droplet deposition during spray and leaf pH in aquatic weed control |
title_full |
Droplet deposition during spray and leaf pH in aquatic weed control |
title_fullStr |
Droplet deposition during spray and leaf pH in aquatic weed control |
title_full_unstemmed |
Droplet deposition during spray and leaf pH in aquatic weed control |
title_sort |
Droplet deposition during spray and leaf pH in aquatic weed control |
author |
Costa,Neumárcio Vilanova da |
author_facet |
Costa,Neumárcio Vilanova da Martins,Dagoberto Rodella,Roberto Antonio Costa,Lívia Duarte Neves de Camargo da |
author_role |
author |
author2 |
Martins,Dagoberto Rodella,Roberto Antonio Costa,Lívia Duarte Neves de Camargo da |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Costa,Neumárcio Vilanova da Martins,Dagoberto Rodella,Roberto Antonio Costa,Lívia Duarte Neves de Camargo da |
dc.subject.por.fl_str_mv |
aquatic weed glyphosate surface tension wetting |
topic |
aquatic weed glyphosate surface tension wetting |
description |
The morphological diversity of leaf surface and structures such as trichomes, stomata, cuticle, and waxes that exists among plant species can have great influence on the adherence and deposition of spray droplets, as well as on herbicide absorption. The aim of this research was to study leaf pH and to evaluate wetting areas after applications of solution surfactants on the following aquatic weeds: Enhydra anagallis, Eichhornia crassipes, Heteranthera reniformis, and Typha subulata. The aquatic weeds were grown in reservoirs containing water under open air conditions and their leaf tissues were collected when the plants reached full development (before flowering). The mean leaf pH varied between 5.50 and 7.50; E. anagallis should be pointed out for presenting the highest pH values, of 6.68 and 7.02 on the upper and lower leaf surfaces, respectively. Surface tension reduction for glyphosate alone (5.0% v v-1), glyphosate + Aterbane BR (5.0% + 0.5% v v-1), glyphosate + Silwet L-77 (5.0% + 0.05% v v-1), and surfactants alone, Aterbane BR (0.5% v v-1), and Silwet L-77 (0.05% v v-1), were, respectively: 72.1; 28.7; 23.3; 37.3, and 22.1 mN m-1.T. subulata was the aquatic species with the highest upper and lower leaf surface wetting area. |
publishDate |
2005 |
dc.date.none.fl_str_mv |
2005-06-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000300005 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000300005 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0103-90162005000300005 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Escola Superior de Agricultura "Luiz de Queiroz" |
publisher.none.fl_str_mv |
Escola Superior de Agricultura "Luiz de Queiroz" |
dc.source.none.fl_str_mv |
Scientia Agricola v.62 n.3 2005 reponame:Scientia Agrícola (Online) instname:Universidade de São Paulo (USP) instacron:USP |
instname_str |
Universidade de São Paulo (USP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Scientia Agrícola (Online) |
collection |
Scientia Agrícola (Online) |
repository.name.fl_str_mv |
Scientia Agrícola (Online) - Universidade de São Paulo (USP) |
repository.mail.fl_str_mv |
scientia@usp.br||alleoni@usp.br |
_version_ |
1748936459708006400 |