Productivity, control, and decomposition of irrigated forage species under glyphosate doses and shading
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFMG |
Texto Completo: | https://doi.org/10.1590/S0100-83582018360100130 http://hdl.handle.net/1843/51931 |
Resumo: | Light intensity available in growing environments may influence the susceptibility of plants to glyphosate and decomposition of their residues. This study aimed to assess the productivity, control, and decomposition of forage straw submitted to glyphosate doses and exposed to full sun and 50% shade. Two experiments were carried out, one for Piatã grass (Urochloa brizantha cv. Piatã) and other for Tanzania grass (Megathyrsus maximus cv. Tanzania). The experimental design was a randomized block design with strip-plot and four replications. Two growing environments (at full sun and under 50% shade) were installed in strips in the growing area, combined with six doses of glyphosate (0, 360, 720, 1,080, 1,440, and 1,800 g a.e. ha-1) used for forage desiccation. Shade did not change Tanzania grass productivity (p<0.05), but it reduced Piatã grass productivity (p>0.05), suggesting its low tolerance to light restriction. Tanzania grass is more tolerant to glyphosate when compared to Piatã grass, especially at full sun conditions. In general, the evaluated forages present a high susceptibility to glyphosate as incident radiation is reduced, which allows using lower doses to desiccate them in shaded environments. Straw decomposition of Piatã and Tanzania grasses was slower under shading. In this environment with light restriction, straw is more durable and has a better quality for the no-tillage system. |
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2023-04-13T17:20:19Z2023-04-13T17:20:19Z20183619https://doi.org/10.1590/S0100-835820183601001301806-9681http://hdl.handle.net/1843/51931Light intensity available in growing environments may influence the susceptibility of plants to glyphosate and decomposition of their residues. This study aimed to assess the productivity, control, and decomposition of forage straw submitted to glyphosate doses and exposed to full sun and 50% shade. Two experiments were carried out, one for Piatã grass (Urochloa brizantha cv. Piatã) and other for Tanzania grass (Megathyrsus maximus cv. Tanzania). The experimental design was a randomized block design with strip-plot and four replications. Two growing environments (at full sun and under 50% shade) were installed in strips in the growing area, combined with six doses of glyphosate (0, 360, 720, 1,080, 1,440, and 1,800 g a.e. ha-1) used for forage desiccation. Shade did not change Tanzania grass productivity (p<0.05), but it reduced Piatã grass productivity (p>0.05), suggesting its low tolerance to light restriction. Tanzania grass is more tolerant to glyphosate when compared to Piatã grass, especially at full sun conditions. In general, the evaluated forages present a high susceptibility to glyphosate as incident radiation is reduced, which allows using lower doses to desiccate them in shaded environments. Straw decomposition of Piatã and Tanzania grasses was slower under shading. In this environment with light restriction, straw is more durable and has a better quality for the no-tillage system.A intensidade luminosa disponível nos ambientes de cultivo pode influenciar a suscetibilidade das plantas ao glyphosate e também a decomposição de seus resíduos. Objetivou-se neste estudo avaliar a produtividade, o controle e a decomposição da palha de forrageiras submetidas a doses do herbicida glyphosate, expostas a pleno sol e sob 50% de sombra. Foram realizados dois ensaios, sendo um para capim-piatã (Urochloa brizantha cv. Piatã) e outro para capim-tanzânia (Megathyrsus maximus cv. Tanzânia). Os experimentos foram conduzidos em faixas, no delineamento experimental de blocos casualizados com quatro repetições. Foram testados dois ambientes de cultivo, a pleno sol e sob 50% de sombra, alocados em faixas na área de cultivo, combinados com seis doses de glyphosate, 0, 360, 720, 1.080, 1.440 e 1.800 g ha-1 de equivalente ácido (e.a.), utilizadas na dessecação das forrageiras. O sombreamento não alterou a produtividade do capimtanzânia (p<0,05), porém reduziu a produtividade do capim-piatã (p>0,05), sugerindo baixa tolerância dessa espécie à restrição luminosa. O capim-tanzânia é mais tolerante ao glyphosate em relação ao capim-piatã, sobretudo em condições de pleno sol. De maneira geral, as forrageiras avaliadas apresentam alta suscetibilidade ao glyphosate com a redução da radiação incidente, de modo a permitir a utilização de menores doses para dessecação dessas forrageiras em ambiente sombreado. A decomposição da palhada do capim-piatã e capim-tanzânia foi mais lenta sob sombreamento, possibilitando uma palhada mais duradoura, o que pode favorecer a adoção do sistema de plantio direto na palha.engUniversidade Federal de Minas GeraisUFMGBrasilICA - INSTITUTO DE CIÊNCIAS AGRÁRIASPlanta DaninhaPlantio diretoPlantas - Efeitos da luzPlantas forrageirasCrop-livestock-forest integration systemNo-tillage systemPostemergence desiccationLuminous intensityUrochloaMegathyrsusProductivity, control, and decomposition of irrigated forage species under glyphosate doses and shadingProdutividade, controle e decomposição de forrageiras irrigadas sob doses de glyphosate e sombreamentoinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttps://www.scielo.br/j/pd/a/yFYfft4JC9dSrrPQscntpry/?lang=enMatheus Caldeira BrantLeonardo David Tuffi SantosIgor Costa de FreitasLeidivan Almeida FrazaoMatheus Sales Nogueira e SilvaVitor Diniz MachadoMarcia Vitória Santosinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFMGinstname:Universidade Federal de Minas Gerais (UFMG)instacron:UFMGLICENSELicense.txtLicense.txttext/plain; charset=utf-82042https://repositorio.ufmg.br/bitstream/1843/51931/1/License.txtfa505098d172de0bc8864fc1287ffe22MD51ORIGINALProductivity, control, and decomposition of irrigated forage species under glyphosate doses and shading_Leidivan Almeida Frazão.pdfProductivity, control, and decomposition of irrigated forage species under glyphosate doses and shading_Leidivan Almeida Frazão.pdfapplication/pdf373303https://repositorio.ufmg.br/bitstream/1843/51931/2/Productivity%2c%20control%2c%20and%20decomposition%20of%20irrigated%20forage%20species%20under%20glyphosate%20doses%20and%20shading_Leidivan%20Almeida%20Fraz%c3%a3o.pdf8a7e7e2cee831cbd85731b002bb63b6dMD521843/519312023-04-14 16:26:49.629oai:repositorio.ufmg.br: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Repositório de PublicaçõesPUBhttps://repositorio.ufmg.br/oaiopendoar:2023-04-14T19:26:49Repositório Institucional da UFMG - Universidade Federal de Minas Gerais (UFMG)false |
dc.title.pt_BR.fl_str_mv |
Productivity, control, and decomposition of irrigated forage species under glyphosate doses and shading |
dc.title.alternative.pt_BR.fl_str_mv |
Produtividade, controle e decomposição de forrageiras irrigadas sob doses de glyphosate e sombreamento |
title |
Productivity, control, and decomposition of irrigated forage species under glyphosate doses and shading |
spellingShingle |
Productivity, control, and decomposition of irrigated forage species under glyphosate doses and shading Matheus Caldeira Brant Crop-livestock-forest integration system No-tillage system Postemergence desiccation Luminous intensity Urochloa Megathyrsus Plantio direto Plantas - Efeitos da luz Plantas forrageiras |
title_short |
Productivity, control, and decomposition of irrigated forage species under glyphosate doses and shading |
title_full |
Productivity, control, and decomposition of irrigated forage species under glyphosate doses and shading |
title_fullStr |
Productivity, control, and decomposition of irrigated forage species under glyphosate doses and shading |
title_full_unstemmed |
Productivity, control, and decomposition of irrigated forage species under glyphosate doses and shading |
title_sort |
Productivity, control, and decomposition of irrigated forage species under glyphosate doses and shading |
author |
Matheus Caldeira Brant |
author_facet |
Matheus Caldeira Brant Leonardo David Tuffi Santos Igor Costa de Freitas Leidivan Almeida Frazao Matheus Sales Nogueira e Silva Vitor Diniz Machado Marcia Vitória Santos |
author_role |
author |
author2 |
Leonardo David Tuffi Santos Igor Costa de Freitas Leidivan Almeida Frazao Matheus Sales Nogueira e Silva Vitor Diniz Machado Marcia Vitória Santos |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Matheus Caldeira Brant Leonardo David Tuffi Santos Igor Costa de Freitas Leidivan Almeida Frazao Matheus Sales Nogueira e Silva Vitor Diniz Machado Marcia Vitória Santos |
dc.subject.por.fl_str_mv |
Crop-livestock-forest integration system No-tillage system Postemergence desiccation Luminous intensity Urochloa Megathyrsus |
topic |
Crop-livestock-forest integration system No-tillage system Postemergence desiccation Luminous intensity Urochloa Megathyrsus Plantio direto Plantas - Efeitos da luz Plantas forrageiras |
dc.subject.other.pt_BR.fl_str_mv |
Plantio direto Plantas - Efeitos da luz Plantas forrageiras |
description |
Light intensity available in growing environments may influence the susceptibility of plants to glyphosate and decomposition of their residues. This study aimed to assess the productivity, control, and decomposition of forage straw submitted to glyphosate doses and exposed to full sun and 50% shade. Two experiments were carried out, one for Piatã grass (Urochloa brizantha cv. Piatã) and other for Tanzania grass (Megathyrsus maximus cv. Tanzania). The experimental design was a randomized block design with strip-plot and four replications. Two growing environments (at full sun and under 50% shade) were installed in strips in the growing area, combined with six doses of glyphosate (0, 360, 720, 1,080, 1,440, and 1,800 g a.e. ha-1) used for forage desiccation. Shade did not change Tanzania grass productivity (p<0.05), but it reduced Piatã grass productivity (p>0.05), suggesting its low tolerance to light restriction. Tanzania grass is more tolerant to glyphosate when compared to Piatã grass, especially at full sun conditions. In general, the evaluated forages present a high susceptibility to glyphosate as incident radiation is reduced, which allows using lower doses to desiccate them in shaded environments. Straw decomposition of Piatã and Tanzania grasses was slower under shading. In this environment with light restriction, straw is more durable and has a better quality for the no-tillage system. |
publishDate |
2018 |
dc.date.issued.fl_str_mv |
2018 |
dc.date.accessioned.fl_str_mv |
2023-04-13T17:20:19Z |
dc.date.available.fl_str_mv |
2023-04-13T17:20:19Z |
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://hdl.handle.net/1843/51931 |
dc.identifier.doi.pt_BR.fl_str_mv |
https://doi.org/10.1590/S0100-83582018360100130 |
dc.identifier.issn.pt_BR.fl_str_mv |
1806-9681 |
url |
https://doi.org/10.1590/S0100-83582018360100130 http://hdl.handle.net/1843/51931 |
identifier_str_mv |
1806-9681 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.none.fl_str_mv |
Planta Daninha |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Universidade Federal de Minas Gerais |
dc.publisher.initials.fl_str_mv |
UFMG |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
ICA - INSTITUTO DE CIÊNCIAS AGRÁRIAS |
publisher.none.fl_str_mv |
Universidade Federal de Minas Gerais |
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reponame:Repositório Institucional da UFMG instname:Universidade Federal de Minas Gerais (UFMG) instacron:UFMG |
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Universidade Federal de Minas Gerais (UFMG) |
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UFMG |
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UFMG |
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Repositório Institucional da UFMG |
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