Control of Salvinia molesta with imazamox and analysis of environmental indicators in microcosms
Autor(a) principal: | |
---|---|
Data de Publicação: | 2021 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1080/03601234.2021.1981101 http://hdl.handle.net/11449/222465 |
Resumo: | The aim of this study was to assess the efficacy of imazamox for control of S. molesta and to assess the effects of plant decomposition on environmental indicators after application of this herbicide in microcosm conditions. The following rates were used: 600, 700, 800 and 900 g ai ha−1 and spray volume 50 L ha−1. Control efficacy was determined as the percentage (from 0 to 100%) of visible injury symptoms in the plants, biochemical and chemical oxygen demand (BOD5 and COD), water quality variables, chlorophyll a and pheophytin a at 0, 7, 15, 30, 45 and 60 days after application (DAA) and fresh and dry biomass at 60 DAA. Imazamox was effective in controlling 94% of S. molesta with 900 g ai ha−1; it reduced 95% of fresh weight and 92% of dry weight of plant at 60 DAA, and reduced chlorophyll a of the plants for all rates. For BOD5, there was an increase for all rates at 15, 30 and 45 DAA with restoration of the parameters at 60 DAA, and for COD, there was an increase at 60 DAA with 700 and 900 g ai ha−1. For temperature, pH, dissolved oxygen and electrical conductivity, there was no significant effect after spraying. Imazamox was effective in controlling S. molesta with 900 g ai ha−1 without causing significant effects on the physical-chemical parameters of water quality. |
id |
UNSP_baa59596af77782550e4bcf096ff5233 |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/222465 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Control of Salvinia molesta with imazamox and analysis of environmental indicators in microcosmsAquatic environmentchemical controlenvironmental monitoringherbicideSalvinia molestawater qualityThe aim of this study was to assess the efficacy of imazamox for control of S. molesta and to assess the effects of plant decomposition on environmental indicators after application of this herbicide in microcosm conditions. The following rates were used: 600, 700, 800 and 900 g ai ha−1 and spray volume 50 L ha−1. Control efficacy was determined as the percentage (from 0 to 100%) of visible injury symptoms in the plants, biochemical and chemical oxygen demand (BOD5 and COD), water quality variables, chlorophyll a and pheophytin a at 0, 7, 15, 30, 45 and 60 days after application (DAA) and fresh and dry biomass at 60 DAA. Imazamox was effective in controlling 94% of S. molesta with 900 g ai ha−1; it reduced 95% of fresh weight and 92% of dry weight of plant at 60 DAA, and reduced chlorophyll a of the plants for all rates. For BOD5, there was an increase for all rates at 15, 30 and 45 DAA with restoration of the parameters at 60 DAA, and for COD, there was an increase at 60 DAA with 700 and 900 g ai ha−1. For temperature, pH, dissolved oxygen and electrical conductivity, there was no significant effect after spraying. Imazamox was effective in controlling S. molesta with 900 g ai ha−1 without causing significant effects on the physical-chemical parameters of water quality.College of Agricultural and Veterinary Science São Paulo State UniversityUniversity Center of the Barretos Educational FoundationEcosafe - Agriculture and EnvironmentDepartment of Plant Health College of Agricultural and Veterinary Science São Paulo State UniversityCollege of Agricultural and Veterinary Science São Paulo State UniversityDepartment of Plant Health College of Agricultural and Veterinary Science São Paulo State UniversityUniversidade Estadual Paulista (UNESP)University Center of the Barretos Educational FoundationEcosafe - Agriculture and EnvironmentGarlich, Nathalia [UNESP]Garcia, Guilherme Leonardidos Santos, Karina Petride Oliveira, Ana CarolinaPitelli, Robinson Antonioda Costa Ferreira, Marcelo [UNESP]da Cruz, Claudinei2022-04-28T19:44:49Z2022-04-28T19:44:49Z2021-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1080/03601234.2021.1981101Journal of Environmental Science and Health - Part B Pesticides, Food Contaminants, and Agricultural Wastes.1532-41090360-1234http://hdl.handle.net/11449/22246510.1080/03601234.2021.19811012-s2.0-85115382477Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Environmental Science and Health - Part B Pesticides, Food Contaminants, and Agricultural Wastesinfo:eu-repo/semantics/openAccess2022-04-28T19:44:49Zoai:repositorio.unesp.br:11449/222465Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T20:43:50.141553Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Control of Salvinia molesta with imazamox and analysis of environmental indicators in microcosms |
title |
Control of Salvinia molesta with imazamox and analysis of environmental indicators in microcosms |
spellingShingle |
Control of Salvinia molesta with imazamox and analysis of environmental indicators in microcosms Garlich, Nathalia [UNESP] Aquatic environment chemical control environmental monitoring herbicide Salvinia molesta water quality |
title_short |
Control of Salvinia molesta with imazamox and analysis of environmental indicators in microcosms |
title_full |
Control of Salvinia molesta with imazamox and analysis of environmental indicators in microcosms |
title_fullStr |
Control of Salvinia molesta with imazamox and analysis of environmental indicators in microcosms |
title_full_unstemmed |
Control of Salvinia molesta with imazamox and analysis of environmental indicators in microcosms |
title_sort |
Control of Salvinia molesta with imazamox and analysis of environmental indicators in microcosms |
author |
Garlich, Nathalia [UNESP] |
author_facet |
Garlich, Nathalia [UNESP] Garcia, Guilherme Leonardi dos Santos, Karina Petri de Oliveira, Ana Carolina Pitelli, Robinson Antonio da Costa Ferreira, Marcelo [UNESP] da Cruz, Claudinei |
author_role |
author |
author2 |
Garcia, Guilherme Leonardi dos Santos, Karina Petri de Oliveira, Ana Carolina Pitelli, Robinson Antonio da Costa Ferreira, Marcelo [UNESP] da Cruz, Claudinei |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) University Center of the Barretos Educational Foundation Ecosafe - Agriculture and Environment |
dc.contributor.author.fl_str_mv |
Garlich, Nathalia [UNESP] Garcia, Guilherme Leonardi dos Santos, Karina Petri de Oliveira, Ana Carolina Pitelli, Robinson Antonio da Costa Ferreira, Marcelo [UNESP] da Cruz, Claudinei |
dc.subject.por.fl_str_mv |
Aquatic environment chemical control environmental monitoring herbicide Salvinia molesta water quality |
topic |
Aquatic environment chemical control environmental monitoring herbicide Salvinia molesta water quality |
description |
The aim of this study was to assess the efficacy of imazamox for control of S. molesta and to assess the effects of plant decomposition on environmental indicators after application of this herbicide in microcosm conditions. The following rates were used: 600, 700, 800 and 900 g ai ha−1 and spray volume 50 L ha−1. Control efficacy was determined as the percentage (from 0 to 100%) of visible injury symptoms in the plants, biochemical and chemical oxygen demand (BOD5 and COD), water quality variables, chlorophyll a and pheophytin a at 0, 7, 15, 30, 45 and 60 days after application (DAA) and fresh and dry biomass at 60 DAA. Imazamox was effective in controlling 94% of S. molesta with 900 g ai ha−1; it reduced 95% of fresh weight and 92% of dry weight of plant at 60 DAA, and reduced chlorophyll a of the plants for all rates. For BOD5, there was an increase for all rates at 15, 30 and 45 DAA with restoration of the parameters at 60 DAA, and for COD, there was an increase at 60 DAA with 700 and 900 g ai ha−1. For temperature, pH, dissolved oxygen and electrical conductivity, there was no significant effect after spraying. Imazamox was effective in controlling S. molesta with 900 g ai ha−1 without causing significant effects on the physical-chemical parameters of water quality. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-01-01 2022-04-28T19:44:49Z 2022-04-28T19:44:49Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1080/03601234.2021.1981101 Journal of Environmental Science and Health - Part B Pesticides, Food Contaminants, and Agricultural Wastes. 1532-4109 0360-1234 http://hdl.handle.net/11449/222465 10.1080/03601234.2021.1981101 2-s2.0-85115382477 |
url |
http://dx.doi.org/10.1080/03601234.2021.1981101 http://hdl.handle.net/11449/222465 |
identifier_str_mv |
Journal of Environmental Science and Health - Part B Pesticides, Food Contaminants, and Agricultural Wastes. 1532-4109 0360-1234 10.1080/03601234.2021.1981101 2-s2.0-85115382477 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of Environmental Science and Health - Part B Pesticides, Food Contaminants, and Agricultural Wastes |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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 |
|
_version_ |
1808129239338188800 |