Efeito hormético na cultura da soja em função à aplicação de 2,4-d sal colina
Autor(a) principal: | |
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Data de Publicação: | 2022 |
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/1/2348 |
Resumo: | The action of herbicides on sensitive plants, depending on the dose, can have a beneficial effect. This stimulating effect caused by low doses of a substance considered toxic is known as hormesis. Thus, the aim of this research was to evaluate the effect of hormesis provided by 2,4-D choline salt doses on biometric and productive variables of non-tolerant soybean at different phenological stages. A randomized block design was used with four replications. The treatments were arranged in a 6 x 5 factorial scheme, with six fractions of the average dose at the leaflet of the herbicide 2,4-D formulation choline salt (0 (control); 0.068; 0.684, 6.84, 68.4 and 684.0 g e.a. ha-1 ) associated with five application times during the phenological stage of soybean, V2, V5 and R2 and two sequential: V2 and R2; V5 and R2. The soybean plants were evaluated considering the main biometric and productive parameters. The results were submitted to analysis of variance and, when significant, the hormesis regression model was tested in order to describe the dose-response curves with stimulus in low doses. It was observed that the effects of 2,4-D choline salt on soybeans are influenced by the age of the plant and that at all stages in which 2,4-D choline salt applications were made, including the sequential ones, at least one variable presented hormesis. In general, the sub-doses of the herbicide 2,4-D salt choline promoted, in some cases, positive effects for some variables in the development of the soybean crop, such as grain yield, insertion of the first, shoot dry matter, height, weight of thousand grains and the total number of pods, providing the expected hormetic effect for the crop. The effects of 2,4-D choline salt in soybeans are influenced by the age of the plant, however, in contradiction, the visual effects of injury were lower in the early stages of development, with emphasis on the V5 and sequential stages V5 and R2, in which there was no significant increment in any productive variable. For the other stages V2, R2 and in the sequential V2 and R2, in which doses of 2,4-D choline salt were applied, more than two variables presented hormesis. |
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Efeito hormético na cultura da soja em função à aplicação de 2,4-d sal colinaCNPQ::CIENCIAS AGRARIAS::AGRONOMIAácido 2,4-diclorofenoxiacéticoauxina sintéticahormesisGlycine max (L)2,4-dichlorophenoxyacetic acidsynthetic auxinhormesisGlycine max (L)The action of herbicides on sensitive plants, depending on the dose, can have a beneficial effect. This stimulating effect caused by low doses of a substance considered toxic is known as hormesis. Thus, the aim of this research was to evaluate the effect of hormesis provided by 2,4-D choline salt doses on biometric and productive variables of non-tolerant soybean at different phenological stages. A randomized block design was used with four replications. The treatments were arranged in a 6 x 5 factorial scheme, with six fractions of the average dose at the leaflet of the herbicide 2,4-D formulation choline salt (0 (control); 0.068; 0.684, 6.84, 68.4 and 684.0 g e.a. ha-1 ) associated with five application times during the phenological stage of soybean, V2, V5 and R2 and two sequential: V2 and R2; V5 and R2. The soybean plants were evaluated considering the main biometric and productive parameters. The results were submitted to analysis of variance and, when significant, the hormesis regression model was tested in order to describe the dose-response curves with stimulus in low doses. It was observed that the effects of 2,4-D choline salt on soybeans are influenced by the age of the plant and that at all stages in which 2,4-D choline salt applications were made, including the sequential ones, at least one variable presented hormesis. In general, the sub-doses of the herbicide 2,4-D salt choline promoted, in some cases, positive effects for some variables in the development of the soybean crop, such as grain yield, insertion of the first, shoot dry matter, height, weight of thousand grains and the total number of pods, providing the expected hormetic effect for the crop. The effects of 2,4-D choline salt in soybeans are influenced by the age of the plant, however, in contradiction, the visual effects of injury were lower in the early stages of development, with emphasis on the V5 and sequential stages V5 and R2, in which there was no significant increment in any productive variable. For the other stages V2, R2 and in the sequential V2 and R2, in which doses of 2,4-D choline salt were applied, more than two variables presented hormesis.A ação de herbicidas em plantas sensíveis, dependendo da dose, pode causar efeito benéfico. Este efeito estimulante causado por baixas doses de uma substância considerada tóxica é conhecido como hormesis. Dessa forma, o objetivo da pesquisa foi avaliar o efeito de hormesis proporcionado por doses do herbicida 2,4-D sal colina sobre variáveis biométricas e de produção de soja não-tolerante em distintos estádios fenológicos. Adotou-se o delineamento experimental em blocos casualizados com quatro repetições. Os tratamentos foram arranjados em esquema fatorial 6 x 5, contendo seis frações da dose média da bula do herbicida 2,4-D formulação sal colina (0 (controle); 0,068; 0,684; 6,84; 68,4 e 684,0 g e.a. ha-1 ) associadas a cinco momentos de aplicação durante o estádio fenológico da soja, a saber: V2, V5 e R2 e dois sequenciais: V2 e R2; V5 e R2. As plantas de soja foram avaliadas levando-se em consideração as principais variáveis biométricas e produtivas. Os resultados foram submetidos à análise de variância e quando significativos testou-se o modelo de regressão para hormesis com o objetivo de descrever as curvas de dose-resposta com estímulo em baixas doses. Constatou-se que os efeitos do 2,4-D sal colina na soja são influenciados pela idade da planta e que em todos os estádios nos quais foram realizadas as aplicações de 2,4-D sal colina, incluindo as sequenciais, ao menos uma variável apresentou hormesis. De maneira geral, as subdoses do herbicida 2,4-D sal colina promoveram em alguns casos, efeitos positivos para algumas variáveis no desenvolvimento da cultura da soja como produtividade de grãos, inserção da primeira, matéria seca da parte aérea, altura, peso de mil grãos e o número total de vagem, proporcionando efeito hormético esperado para a cultura. Os efeitos do 2,4-D sal colina na soja são influenciados pela idade da planta, porém em contradição os efeitos visuais de injúria foram menores nos estádios iniciais de desenvolvimento, com destaque ao estádio V5 e sequencial V5 e R2, na qual não apresentaram incremento significativo em qualquer variável produtiva. Para os demais estádios V2, R2 e no sequencial V2 e R2, nos quais foram realizadas as aplicações de doses de 2,4-D sal colina, mais de duas variáveis apresentaram hormesis.Universidade Federal de Mato GrossoBrasilInstituto de Ciências Exatas e da Terra (ICET) – AraguaiaUFMT CUA - AraguaiaAgronomia - CUAMarchi, Sidnei Roberto dehttp://lattes.cnpq.br/5885155446723216Marques, Ricardo Fagundeshttp://lattes.cnpq.br/3980582923585737Marchi, Sidnei Roberto dehttp://lattes.cnpq.br/5885155446723216Marques, Ricardo Fagundeshttp://lattes.cnpq.br/3980582923585737Gomes, Francielly Rodrigueshttp://lattes.cnpq.br/6723884193757387Silva, Ilgner Thiago Duarte2022-06-07T23:22:06Z2022-03-252022-06-07T23:22:06Z2022-03-08info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/bachelorThesisinfo:eu-repo/semantics/datasetSILVA, Ilgner Thiago Duarte. Efeito hormético na cultura da soja em função à aplicação de 2,4-d sal colina. 2022. 39 f. Monografia (Bacharel em Agronomia) - Instituto de Ciências Exatas e da Terra, Universidade Federal do Mato Grosso, Barra do Garças, 2022.http://bdm.ufmt.br/handle/1/2348porinfo:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Monografias da UFMTinstname:Universidade Federal de Mato Grosso (UFMT)instacron:UFMT2022-06-09T07:00:30Zoai:localhost:1/2348Biblioteca Digital de Monografiahttps://bdm.ufmt.br/PUBhttp://200.129.241.122/oai/requestopendoar:2022-06-09T07:00:30falseBiblioteca Digital de Monografiahttps://bdm.ufmt.br/PUBhttp://200.129.241.122/oai/requestbibliotecacentral@ufmt.br||opendoar:2022-06-09T07:00:30Biblioteca Digital de Monografias da UFMT - Universidade Federal de Mato Grosso (UFMT)false |
dc.title.none.fl_str_mv |
Efeito hormético na cultura da soja em função à aplicação de 2,4-d sal colina |
title |
Efeito hormético na cultura da soja em função à aplicação de 2,4-d sal colina |
spellingShingle |
Efeito hormético na cultura da soja em função à aplicação de 2,4-d sal colina Silva, Ilgner Thiago Duarte CNPQ::CIENCIAS AGRARIAS::AGRONOMIA ácido 2,4-diclorofenoxiacético auxina sintética hormesis Glycine max (L) 2,4-dichlorophenoxyacetic acid synthetic auxin hormesis Glycine max (L) |
title_short |
Efeito hormético na cultura da soja em função à aplicação de 2,4-d sal colina |
title_full |
Efeito hormético na cultura da soja em função à aplicação de 2,4-d sal colina |
title_fullStr |
Efeito hormético na cultura da soja em função à aplicação de 2,4-d sal colina |
title_full_unstemmed |
Efeito hormético na cultura da soja em função à aplicação de 2,4-d sal colina |
title_sort |
Efeito hormético na cultura da soja em função à aplicação de 2,4-d sal colina |
author |
Silva, Ilgner Thiago Duarte |
author_facet |
Silva, Ilgner Thiago Duarte |
author_role |
author |
dc.contributor.none.fl_str_mv |
Marchi, Sidnei Roberto de http://lattes.cnpq.br/5885155446723216 Marques, Ricardo Fagundes http://lattes.cnpq.br/3980582923585737 Marchi, Sidnei Roberto de http://lattes.cnpq.br/5885155446723216 Marques, Ricardo Fagundes http://lattes.cnpq.br/3980582923585737 Gomes, Francielly Rodrigues http://lattes.cnpq.br/6723884193757387 |
dc.contributor.author.fl_str_mv |
Silva, Ilgner Thiago Duarte |
dc.subject.por.fl_str_mv |
CNPQ::CIENCIAS AGRARIAS::AGRONOMIA ácido 2,4-diclorofenoxiacético auxina sintética hormesis Glycine max (L) 2,4-dichlorophenoxyacetic acid synthetic auxin hormesis Glycine max (L) |
topic |
CNPQ::CIENCIAS AGRARIAS::AGRONOMIA ácido 2,4-diclorofenoxiacético auxina sintética hormesis Glycine max (L) 2,4-dichlorophenoxyacetic acid synthetic auxin hormesis Glycine max (L) |
description |
The action of herbicides on sensitive plants, depending on the dose, can have a beneficial effect. This stimulating effect caused by low doses of a substance considered toxic is known as hormesis. Thus, the aim of this research was to evaluate the effect of hormesis provided by 2,4-D choline salt doses on biometric and productive variables of non-tolerant soybean at different phenological stages. A randomized block design was used with four replications. The treatments were arranged in a 6 x 5 factorial scheme, with six fractions of the average dose at the leaflet of the herbicide 2,4-D formulation choline salt (0 (control); 0.068; 0.684, 6.84, 68.4 and 684.0 g e.a. ha-1 ) associated with five application times during the phenological stage of soybean, V2, V5 and R2 and two sequential: V2 and R2; V5 and R2. The soybean plants were evaluated considering the main biometric and productive parameters. The results were submitted to analysis of variance and, when significant, the hormesis regression model was tested in order to describe the dose-response curves with stimulus in low doses. It was observed that the effects of 2,4-D choline salt on soybeans are influenced by the age of the plant and that at all stages in which 2,4-D choline salt applications were made, including the sequential ones, at least one variable presented hormesis. In general, the sub-doses of the herbicide 2,4-D salt choline promoted, in some cases, positive effects for some variables in the development of the soybean crop, such as grain yield, insertion of the first, shoot dry matter, height, weight of thousand grains and the total number of pods, providing the expected hormetic effect for the crop. The effects of 2,4-D choline salt in soybeans are influenced by the age of the plant, however, in contradiction, the visual effects of injury were lower in the early stages of development, with emphasis on the V5 and sequential stages V5 and R2, in which there was no significant increment in any productive variable. For the other stages V2, R2 and in the sequential V2 and R2, in which doses of 2,4-D choline salt were applied, more than two variables presented hormesis. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-06-07T23:22:06Z 2022-03-25 2022-06-07T23:22:06Z 2022-03-08 |
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 |
SILVA, Ilgner Thiago Duarte. Efeito hormético na cultura da soja em função à aplicação de 2,4-d sal colina. 2022. 39 f. Monografia (Bacharel em Agronomia) - Instituto de Ciências Exatas e da Terra, Universidade Federal do Mato Grosso, Barra do Garças, 2022. http://bdm.ufmt.br/handle/1/2348 |
identifier_str_mv |
SILVA, Ilgner Thiago Duarte. Efeito hormético na cultura da soja em função à aplicação de 2,4-d sal colina. 2022. 39 f. Monografia (Bacharel em Agronomia) - Instituto de Ciências Exatas e da Terra, Universidade Federal do Mato Grosso, Barra do Garças, 2022. |
url |
http://bdm.ufmt.br/handle/1/2348 |
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por |
language |
por |
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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 |
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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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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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