Concentrações de fósforo e nitrogênio no crescimento da alface em cultivo sem solo
Ano de defesa: | 2018 |
---|---|
Autor(a) principal: | |
Orientador(a): | |
Banca de defesa: | , , , |
Tipo de documento: | Tese |
Tipo de acesso: | Acesso aberto |
Idioma: | por |
Instituição de defesa: |
Universidade Federal de Santa Maria
Centro de Ciências Rurais |
Programa de Pós-Graduação: |
Programa de Pós-Graduação em Agronomia
|
Departamento: |
Agronomia
|
País: |
Brasil
|
Palavras-chave em Português: | |
Palavras-chave em Inglês: | |
Área do conhecimento CNPq: | |
Link de acesso: | http://repositorio.ufsm.br/handle/1/15352 |
Resumo: | The goal of this research was to evaluate phosphorus and nitrogen concentrations on growth and in soilless lettuce plants. Experiments were carried out inside a polyethylene greenhouse at Plant Science Department at the Santa Maria Federal University (UFSM) from 2015 to 2017. In the first step, four experiments were conducted in spring 2015, autumn 2016, summer 2017 and winter 2017, to determine the effect of low and high P concentrations in the nutrient solution on growth and commercial production of lettuce plants. In experiments spring and autumn treatments were high P concentrations (1.5; 3.0; 4.5 e 6.0 mmol L-1) and two cultivars Stella and Veneranda. In experiments summer and winter, five low concentrations were (0.4; 0.8; 1.2; 1.6 e 2.0 mmol L-1) and two cultivars (Stella and Veneranda). The second stage consisted of two experiments conducted inside a polyethylene greenhouse in 2017. At the shelter N and P concentrations, respectively, high (NHPH), high and low (NHPL), low and high (NLPH), low (NLPL) and control defined as the better concentration from previous experiments and two lettuce cultivars (Stella and Veneranda) at two growing seasons (autumn and autumn-winter). In all experiments, a factorial experimental randomized experimental design was used, with seasons, concentrations and cultivars. Results showed that P concentrations in nutrient solution above and below 2.1 mmol L-1 in spring/summer and 2.37 mmol L-1 in autumn/winter reduce lettuce growth in soilless culture, with stronger effect on concentrations above these values. Antagonistic interactions between N and P concentrations in the nutrient solution were not observed in roots and shoot. Maximum shoot growth and P accumulation in tissues is reached at 2.1 mmol L-1 P concentration in the nutrient solution. There are any interactions between P and N in the nutrient solution with reduction in accumulation of other nutrients. |
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network_name_str |
Biblioteca Digital de Teses e Dissertações do UFSM |
repository_id_str |
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spelling |
2019-01-15T10:27:43Z2019-01-15T10:27:43Z2018-04-27http://repositorio.ufsm.br/handle/1/15352The goal of this research was to evaluate phosphorus and nitrogen concentrations on growth and in soilless lettuce plants. Experiments were carried out inside a polyethylene greenhouse at Plant Science Department at the Santa Maria Federal University (UFSM) from 2015 to 2017. In the first step, four experiments were conducted in spring 2015, autumn 2016, summer 2017 and winter 2017, to determine the effect of low and high P concentrations in the nutrient solution on growth and commercial production of lettuce plants. In experiments spring and autumn treatments were high P concentrations (1.5; 3.0; 4.5 e 6.0 mmol L-1) and two cultivars Stella and Veneranda. In experiments summer and winter, five low concentrations were (0.4; 0.8; 1.2; 1.6 e 2.0 mmol L-1) and two cultivars (Stella and Veneranda). The second stage consisted of two experiments conducted inside a polyethylene greenhouse in 2017. At the shelter N and P concentrations, respectively, high (NHPH), high and low (NHPL), low and high (NLPH), low (NLPL) and control defined as the better concentration from previous experiments and two lettuce cultivars (Stella and Veneranda) at two growing seasons (autumn and autumn-winter). In all experiments, a factorial experimental randomized experimental design was used, with seasons, concentrations and cultivars. Results showed that P concentrations in nutrient solution above and below 2.1 mmol L-1 in spring/summer and 2.37 mmol L-1 in autumn/winter reduce lettuce growth in soilless culture, with stronger effect on concentrations above these values. Antagonistic interactions between N and P concentrations in the nutrient solution were not observed in roots and shoot. Maximum shoot growth and P accumulation in tissues is reached at 2.1 mmol L-1 P concentration in the nutrient solution. There are any interactions between P and N in the nutrient solution with reduction in accumulation of other nutrients.O objetivo do estudo foi avaliar concentrações de fósforo e nitrogênio no crescimento da alface em cultivo sem solo. Os experimentos foram desenvolvidos no interior de um abrigo de polietileno de baixa densidade localizado no Departamento de Fitotecnia da Universidade Federal de Santa Maria (UFSM), durante os anos de 2015 a 2017. Na primeira etapa foram realizados experimentos em quatro épocas de cultivo, respectivamente, na primavera de 2015, outono de 2016, verão de 2017 e inverno de 2017, para determinar o efeito de concentrações baixas e altas de fósforo na solução nutritiva no crescimento e na produção comercial de plantas de alface. Nos experimentos de primavera e outono, os tratamentos foram constituídos por quatro concentrações altas de P (1,5; 3,0; 4,5 e 6,0 mmol L-1) e duas cultivares de alface Stella e Veneranda. Nos experimentos de inverno e verão foram utilizadas cinco concentrações baixas de P (0,4; 0,8; 1,2; 1,6 e 2,0 mmol L-1) e duas cultivares (Stella e Veneranda). A segunda etapa foi constituída por dois experimentos conduzidos no interior de um abrigo de polietileno em 2017. No abrigo foram avaliadas concentrações de N e P, respectivamente, altas (NAPA), alta e baixa (NAPB), baixa e alta (NBPA) e baixas (NBPB) e a testemunha definida como a melhor concentração indicada nos experimentos anteriores e duas cultivares de alface (Stella e Veneranda) em duas épocas de cultivo (outono e outono-inverno). Em todos os experimentos o delineamento experimental empregado foi o inteiramente casualizado em esquema fatorial, com épocas de cultivo, concentrações e cultivares. Os resultados obtidos demonstraram que concentrações de P na solução nutritiva acima e abaixo de 2,1 mmol L-1 de P na primavera/verão e de 2,37 mmol L-1 no outono/inverno reduzem o crescimento da alface em cultivo sem solo, com efeito mais intenso nas concentrações acima desses valores. Não foram observadas interações antagônicas entre as concentrações de N e P na solução nutritiva, nas raízes e na parte aérea das plantas de alface. O máximo crescimento da parte aérea e acumulação de P nos tecidos ocorre com a concentração de P de 2,1 mmol L-1 na solução nutritiva. Não ocorrem interações da concentração de P e de N na solução nutritiva com redução na acumulação dos demais nutrientes.porUniversidade Federal de Santa MariaCentro de Ciências RuraisPrograma de Pós-Graduação em AgronomiaUFSMBrasilAgronomiaAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessLactuca sativa LNutrição mineralSolução nutritivaMineral nutritionNutrient solutionCNPQ::CIENCIAS AGRARIAS::AGRONOMIAConcentrações de fósforo e nitrogênio no crescimento da alface em cultivo sem soloPhosphorus and nitrogen concentrations on growth and in soilless lettuce plantsinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisAndriolo, Jeronimo Luizhttp://lattes.cnpq.br/2272742484721758Backes, Fernanda Alice Antonello Londerohttp://lattes.cnpq.br/1501573193830736Brunetto, Gustavohttp://lattes.cnpq.br/1185169003700830Strassburger, André Samuelhttp://lattes.cnpq.br/6249289869696657Duarte, Tatiana da Silvahttp://lattes.cnpq.br/8035594287160790http://lattes.cnpq.br/7455823354570945Silva, Juliete Araújo da5001000000096003d5c7ab4-9411-42c6-9dae-b565481f2d78963e07ee-c2a2-4a2b-8765-ecea050dba4d6611edd7-24e3-4a67-9545-04689347216947c53d70-f89e-4d53-83be-c30ab75c841dbc8d9ac2-1fdf-4fbc-8d34-dede37bd11d912997bb3-cb92-4e7f-ab06-7b81209c8ba5reponame:Biblioteca Digital de Teses e Dissertações do UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMORIGINALTES_PPGAGRONOMIA_2018_SILVA_JULIETE.pdfTES_PPGAGRONOMIA_2018_SILVA_JULIETE.pdfTese de Doutoradoapplication/pdf760189http://repositorio.ufsm.br/bitstream/1/15352/1/TES_PPGAGRONOMIA_2018_SILVA_JULIETE.pdfede125463ca8123d4da84e4c4096a082MD51CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; 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dc.title.por.fl_str_mv |
Concentrações de fósforo e nitrogênio no crescimento da alface em cultivo sem solo |
dc.title.alternative.eng.fl_str_mv |
Phosphorus and nitrogen concentrations on growth and in soilless lettuce plants |
title |
Concentrações de fósforo e nitrogênio no crescimento da alface em cultivo sem solo |
spellingShingle |
Concentrações de fósforo e nitrogênio no crescimento da alface em cultivo sem solo Silva, Juliete Araújo da Lactuca sativa L Nutrição mineral Solução nutritiva Mineral nutrition Nutrient solution CNPQ::CIENCIAS AGRARIAS::AGRONOMIA |
title_short |
Concentrações de fósforo e nitrogênio no crescimento da alface em cultivo sem solo |
title_full |
Concentrações de fósforo e nitrogênio no crescimento da alface em cultivo sem solo |
title_fullStr |
Concentrações de fósforo e nitrogênio no crescimento da alface em cultivo sem solo |
title_full_unstemmed |
Concentrações de fósforo e nitrogênio no crescimento da alface em cultivo sem solo |
title_sort |
Concentrações de fósforo e nitrogênio no crescimento da alface em cultivo sem solo |
author |
Silva, Juliete Araújo da |
author_facet |
Silva, Juliete Araújo da |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Andriolo, Jeronimo Luiz |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/2272742484721758 |
dc.contributor.referee1.fl_str_mv |
Backes, Fernanda Alice Antonello Londero |
dc.contributor.referee1Lattes.fl_str_mv |
http://lattes.cnpq.br/1501573193830736 |
dc.contributor.referee2.fl_str_mv |
Brunetto, Gustavo |
dc.contributor.referee2Lattes.fl_str_mv |
http://lattes.cnpq.br/1185169003700830 |
dc.contributor.referee3.fl_str_mv |
Strassburger, André Samuel |
dc.contributor.referee3Lattes.fl_str_mv |
http://lattes.cnpq.br/6249289869696657 |
dc.contributor.referee4.fl_str_mv |
Duarte, Tatiana da Silva |
dc.contributor.referee4Lattes.fl_str_mv |
http://lattes.cnpq.br/8035594287160790 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/7455823354570945 |
dc.contributor.author.fl_str_mv |
Silva, Juliete Araújo da |
contributor_str_mv |
Andriolo, Jeronimo Luiz Backes, Fernanda Alice Antonello Londero Brunetto, Gustavo Strassburger, André Samuel Duarte, Tatiana da Silva |
dc.subject.por.fl_str_mv |
Lactuca sativa L Nutrição mineral Solução nutritiva |
topic |
Lactuca sativa L Nutrição mineral Solução nutritiva Mineral nutrition Nutrient solution CNPQ::CIENCIAS AGRARIAS::AGRONOMIA |
dc.subject.eng.fl_str_mv |
Mineral nutrition Nutrient solution |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS AGRARIAS::AGRONOMIA |
description |
The goal of this research was to evaluate phosphorus and nitrogen concentrations on growth and in soilless lettuce plants. Experiments were carried out inside a polyethylene greenhouse at Plant Science Department at the Santa Maria Federal University (UFSM) from 2015 to 2017. In the first step, four experiments were conducted in spring 2015, autumn 2016, summer 2017 and winter 2017, to determine the effect of low and high P concentrations in the nutrient solution on growth and commercial production of lettuce plants. In experiments spring and autumn treatments were high P concentrations (1.5; 3.0; 4.5 e 6.0 mmol L-1) and two cultivars Stella and Veneranda. In experiments summer and winter, five low concentrations were (0.4; 0.8; 1.2; 1.6 e 2.0 mmol L-1) and two cultivars (Stella and Veneranda). The second stage consisted of two experiments conducted inside a polyethylene greenhouse in 2017. At the shelter N and P concentrations, respectively, high (NHPH), high and low (NHPL), low and high (NLPH), low (NLPL) and control defined as the better concentration from previous experiments and two lettuce cultivars (Stella and Veneranda) at two growing seasons (autumn and autumn-winter). In all experiments, a factorial experimental randomized experimental design was used, with seasons, concentrations and cultivars. Results showed that P concentrations in nutrient solution above and below 2.1 mmol L-1 in spring/summer and 2.37 mmol L-1 in autumn/winter reduce lettuce growth in soilless culture, with stronger effect on concentrations above these values. Antagonistic interactions between N and P concentrations in the nutrient solution were not observed in roots and shoot. Maximum shoot growth and P accumulation in tissues is reached at 2.1 mmol L-1 P concentration in the nutrient solution. There are any interactions between P and N in the nutrient solution with reduction in accumulation of other nutrients. |
publishDate |
2018 |
dc.date.issued.fl_str_mv |
2018-04-27 |
dc.date.accessioned.fl_str_mv |
2019-01-15T10:27:43Z |
dc.date.available.fl_str_mv |
2019-01-15T10:27:43Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
format |
doctoralThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://repositorio.ufsm.br/handle/1/15352 |
url |
http://repositorio.ufsm.br/handle/1/15352 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.cnpq.fl_str_mv |
500100000009 |
dc.relation.confidence.fl_str_mv |
600 |
dc.relation.authority.fl_str_mv |
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dc.rights.driver.fl_str_mv |
Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Maria Centro de Ciências Rurais |
dc.publisher.program.fl_str_mv |
Programa de Pós-Graduação em Agronomia |
dc.publisher.initials.fl_str_mv |
UFSM |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
Agronomia |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria Centro de Ciências Rurais |
dc.source.none.fl_str_mv |
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