Hormesis de 2,4-d sal colina na cultura da soja de hábito de crescimento determinado
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Tipo de documento: | Trabalho de conclusão de curso |
Idioma: | por |
Título da fonte: | Biblioteca Digital de Monografias da UFMT |
Texto Completo: | http://bdm.ufmt.br/handle/1/2372 |
Resumo: | The stimulant effect of resulting from application of low rates of one substance considered toxic when the same substance is applied in larger quantity is called hormesis. This objective of this trial was to use doses-response curves to evaluate the of hormesis caused by 2,4-D coline salt herbicide on biometric variables of soybean with determinate growth habit at different phenology stages. It was adopted the entirely randomized experimental design, with seven repetitions and the treatments composed by six fractions established as a function of 2,4-D coline salt recommended in label, as following: 0; 0.068, 0.684, 6.84, 68.4, 684.0 g ae ha-1 . The rates were applied at V2 or V5 soybean phenology stages. Visual injuries symptoms were evaluated as 3, 7, 14,0 21 and 33 days after application (DAA) and the kinetics of maximum fluorescence emission of chlorophyll “α” was obtained at 3, 7 and 21 DAA. The characterization of soybean plants submitted to sub-doses of 2,4-D coline salt it was done at 30 DAA by determining plant height, stem diameter, leaves number and dry matter of shoots, roots and total dry matter. The results were submitted to variance analysis and, when significative, it was proceeded the hormesis test. Visual symptoms of injury in soybean plants at phenological stages of V2 and V5 were representative at rates of 68.4 and 684.0 g ae ha-1 , being that at V5 stage this last rate provided 100% of soybean death. The rates of 68.4 and 684.0 g ae ha-1 prejudicated the photosynthetic II quantic efficiency at 14 DAA when applied at V2 stage; and at 3, 7 and 14 DAA when applied at V5 stage. Maximum hormesis effects to height, dry matter of shoots, roots and total were estimated at rates of 0.20, 0.60, 0.41 and 0.44 g ae ha-1 , respectively, when applied at V2 stage. |
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Hormesis de 2,4-d sal colina na cultura da soja de hábito de crescimento determinadoCNPQ::CIENCIAS AGRARIAS::AGRONOMIAGlycine maxauxina sintéticaeficiência quântica do fotossistema IImatéria secaGlycine maxsynthetic auxinphotosynthetic II quantic efficiencydry matterThe stimulant effect of resulting from application of low rates of one substance considered toxic when the same substance is applied in larger quantity is called hormesis. This objective of this trial was to use doses-response curves to evaluate the of hormesis caused by 2,4-D coline salt herbicide on biometric variables of soybean with determinate growth habit at different phenology stages. It was adopted the entirely randomized experimental design, with seven repetitions and the treatments composed by six fractions established as a function of 2,4-D coline salt recommended in label, as following: 0; 0.068, 0.684, 6.84, 68.4, 684.0 g ae ha-1 . The rates were applied at V2 or V5 soybean phenology stages. Visual injuries symptoms were evaluated as 3, 7, 14,0 21 and 33 days after application (DAA) and the kinetics of maximum fluorescence emission of chlorophyll “α” was obtained at 3, 7 and 21 DAA. The characterization of soybean plants submitted to sub-doses of 2,4-D coline salt it was done at 30 DAA by determining plant height, stem diameter, leaves number and dry matter of shoots, roots and total dry matter. The results were submitted to variance analysis and, when significative, it was proceeded the hormesis test. Visual symptoms of injury in soybean plants at phenological stages of V2 and V5 were representative at rates of 68.4 and 684.0 g ae ha-1 , being that at V5 stage this last rate provided 100% of soybean death. The rates of 68.4 and 684.0 g ae ha-1 prejudicated the photosynthetic II quantic efficiency at 14 DAA when applied at V2 stage; and at 3, 7 and 14 DAA when applied at V5 stage. Maximum hormesis effects to height, dry matter of shoots, roots and total were estimated at rates of 0.20, 0.60, 0.41 and 0.44 g ae ha-1 , respectively, when applied at V2 stage.O efeito estimulante decorrente da aplicação de baixa concentração de uma substância considerada tóxica quando a mesma está em grande quantidade é chamado de hormese. O objetivo deste trabalho foi utilizar curvas de dose resposta para avaliar o efeito de hormese causado pelo herbicida 2,4-D sal colina sobre as variáveis biométricas de soja de hábito de crescimento determinado em diferentes estádios fenológicos. Foi adotado o delineamento experimental inteiramente casualizado, com sete repetições e os tratamentos dispostos por seis frações da dose média recomendada por rótulo do herbicida 2,4-D formulação sal colina: 0 (testemunha); 0,068; 0,684; 6,84; 68,4; 684 g ea ha-1 que foram aplicadas nos estádios fenológicos V2 ou V5 da soja. Foram avaliados os sintomas visuais de injúria nas plantas de soja aos 3, 7, 14, 21 e 30 dias após as aplicações (DAA) e a cinética de emissão da fluorescência máxima da clorofila “α” aos 3, 7 e 14 (DAA). A caracterização de plantas de soja submetidas a aplicação de 2,4-D sal colina foi realizada aos 30 DAA, determinando altura das plantas, diâmetro do colo, número de folhas e matéria seca de parte aérea raízes e total. Os resultados dessas avaliações foram submetidos a análise de variância e, quando significativos, testou-se o modelo de hormese. Os sintomas visuais de injúria em plantas de soja no estádio V2 e V5 tiveram representatividade nas doses 68,4 e 684 g ea ha-1 , sendo que em V5 esta última dose obteve 100% de injúria levando a planta a morte. As doses de 68,4 e 684,0 g ea ha-1 prejudicaram a eficiência quântica do fotossistema II aos 14 DAA quando aplicadas no estágio V2 e aos 3, 7 e 14 DAA quando aplicadas no estágio V5. Efeito máximo de hormese para as variáveis altura, matéria seca da parte aérea, da raiz e total de plantas de soja foram estimados nas respectivas doses de 0,20; 0,60; 0,41 e 0,44 g ea ha-1 do herbicida quando aplicado no estágio V2.Universidade Federal de Mato GrossoBrasilInstituto de Ciências Exatas e da Terra (ICET) – AraguaiaUFMT CUA - AraguaiaAgronomia - CUAMarchi, Sidnei Roberto dehttp://lattes.cnpq.br/5885155446723216Marchi, Sidnei Roberto dehttp://lattes.cnpq.br/5885155446723216Marques, Ricardo Fagundeshttp://lattes.cnpq.br/3980582923585737Pinheiro, Guilherme Henrique Rodrigueshttp://lattes.cnpq.br/0505466785076140Freitas, Mauricio Peres de2022-06-14T21:06:31Z2020-03-232022-06-14T21:06:31Z2020-02-17info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/bachelorThesisinfo:eu-repo/semantics/datasetFREITAS, Mauricio Peres de. Hormesis de 2,4-d sal colina na cultura da soja de hábito de crescimento determinado. 2020. 31 f. Monografia (Bacharelado em Agronomia) – Instituto de Ciências Exatas e da Terra, Universidade Federal do Mato Grosso, Barra do Garças, 2020.http://bdm.ufmt.br/handle/1/2372porinfo:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Monografias da UFMTinstname:Universidade Federal de Mato Grosso (UFMT)instacron:UFMT2022-06-22T07:00:42Zoai:localhost:1/2372Biblioteca Digital de Monografiahttps://bdm.ufmt.br/PUBhttp://200.129.241.122/oai/requestopendoar:2022-06-22T07:00:42falseBiblioteca Digital de Monografiahttps://bdm.ufmt.br/PUBhttp://200.129.241.122/oai/requestbibliotecacentral@ufmt.br||opendoar:2022-06-22T07:00:42Biblioteca Digital de Monografias da UFMT - Universidade Federal de Mato Grosso (UFMT)false |
dc.title.none.fl_str_mv |
Hormesis de 2,4-d sal colina na cultura da soja de hábito de crescimento determinado |
title |
Hormesis de 2,4-d sal colina na cultura da soja de hábito de crescimento determinado |
spellingShingle |
Hormesis de 2,4-d sal colina na cultura da soja de hábito de crescimento determinado Freitas, Mauricio Peres de CNPQ::CIENCIAS AGRARIAS::AGRONOMIA Glycine max auxina sintética eficiência quântica do fotossistema II matéria seca Glycine max synthetic auxin photosynthetic II quantic efficiency dry matter |
title_short |
Hormesis de 2,4-d sal colina na cultura da soja de hábito de crescimento determinado |
title_full |
Hormesis de 2,4-d sal colina na cultura da soja de hábito de crescimento determinado |
title_fullStr |
Hormesis de 2,4-d sal colina na cultura da soja de hábito de crescimento determinado |
title_full_unstemmed |
Hormesis de 2,4-d sal colina na cultura da soja de hábito de crescimento determinado |
title_sort |
Hormesis de 2,4-d sal colina na cultura da soja de hábito de crescimento determinado |
author |
Freitas, Mauricio Peres de |
author_facet |
Freitas, Mauricio Peres de |
author_role |
author |
dc.contributor.none.fl_str_mv |
Marchi, Sidnei Roberto de http://lattes.cnpq.br/5885155446723216 Marchi, Sidnei Roberto de http://lattes.cnpq.br/5885155446723216 Marques, Ricardo Fagundes http://lattes.cnpq.br/3980582923585737 Pinheiro, Guilherme Henrique Rodrigues http://lattes.cnpq.br/0505466785076140 |
dc.contributor.author.fl_str_mv |
Freitas, Mauricio Peres de |
dc.subject.por.fl_str_mv |
CNPQ::CIENCIAS AGRARIAS::AGRONOMIA Glycine max auxina sintética eficiência quântica do fotossistema II matéria seca Glycine max synthetic auxin photosynthetic II quantic efficiency dry matter |
topic |
CNPQ::CIENCIAS AGRARIAS::AGRONOMIA Glycine max auxina sintética eficiência quântica do fotossistema II matéria seca Glycine max synthetic auxin photosynthetic II quantic efficiency dry matter |
description |
The stimulant effect of resulting from application of low rates of one substance considered toxic when the same substance is applied in larger quantity is called hormesis. This objective of this trial was to use doses-response curves to evaluate the of hormesis caused by 2,4-D coline salt herbicide on biometric variables of soybean with determinate growth habit at different phenology stages. It was adopted the entirely randomized experimental design, with seven repetitions and the treatments composed by six fractions established as a function of 2,4-D coline salt recommended in label, as following: 0; 0.068, 0.684, 6.84, 68.4, 684.0 g ae ha-1 . The rates were applied at V2 or V5 soybean phenology stages. Visual injuries symptoms were evaluated as 3, 7, 14,0 21 and 33 days after application (DAA) and the kinetics of maximum fluorescence emission of chlorophyll “α” was obtained at 3, 7 and 21 DAA. The characterization of soybean plants submitted to sub-doses of 2,4-D coline salt it was done at 30 DAA by determining plant height, stem diameter, leaves number and dry matter of shoots, roots and total dry matter. The results were submitted to variance analysis and, when significative, it was proceeded the hormesis test. Visual symptoms of injury in soybean plants at phenological stages of V2 and V5 were representative at rates of 68.4 and 684.0 g ae ha-1 , being that at V5 stage this last rate provided 100% of soybean death. The rates of 68.4 and 684.0 g ae ha-1 prejudicated the photosynthetic II quantic efficiency at 14 DAA when applied at V2 stage; and at 3, 7 and 14 DAA when applied at V5 stage. Maximum hormesis effects to height, dry matter of shoots, roots and total were estimated at rates of 0.20, 0.60, 0.41 and 0.44 g ae ha-1 , respectively, when applied at V2 stage. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-03-23 2020-02-17 2022-06-14T21:06:31Z 2022-06-14T21:06:31Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/bachelorThesis info:eu-repo/semantics/dataset |
format |
bachelorThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
FREITAS, Mauricio Peres de. Hormesis de 2,4-d sal colina na cultura da soja de hábito de crescimento determinado. 2020. 31 f. Monografia (Bacharelado em Agronomia) – Instituto de Ciências Exatas e da Terra, Universidade Federal do Mato Grosso, Barra do Garças, 2020. http://bdm.ufmt.br/handle/1/2372 |
identifier_str_mv |
FREITAS, Mauricio Peres de. Hormesis de 2,4-d sal colina na cultura da soja de hábito de crescimento determinado. 2020. 31 f. Monografia (Bacharelado em Agronomia) – Instituto de Ciências Exatas e da Terra, Universidade Federal do Mato Grosso, Barra do Garças, 2020. |
url |
http://bdm.ufmt.br/handle/1/2372 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
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openAccess |
dc.publisher.none.fl_str_mv |
Universidade Federal de Mato Grosso Brasil Instituto de Ciências Exatas e da Terra (ICET) – Araguaia UFMT CUA - Araguaia Agronomia - CUA |
publisher.none.fl_str_mv |
Universidade Federal de Mato Grosso Brasil Instituto de Ciências Exatas e da Terra (ICET) – Araguaia UFMT CUA - Araguaia Agronomia - CUA |
dc.source.none.fl_str_mv |
reponame:Biblioteca Digital de Monografias da UFMT instname:Universidade Federal de Mato Grosso (UFMT) instacron:UFMT |
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Universidade Federal de Mato Grosso (UFMT) |
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UFMT |
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UFMT |
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Biblioteca Digital de Monografias da UFMT |
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Biblioteca Digital de Monografias da UFMT |
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Biblioteca Digital de Monografias da UFMT - Universidade Federal de Mato Grosso (UFMT) |
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bibliotecacentral@ufmt.br|| |
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