Excesso hídrico e seu efeito no crescimento e na produtividade da mandioca
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Biblioteca Digital de Teses e Dissertações do UFSM |
Texto Completo: | http://repositorio.ufsm.br/handle/1/22929 |
Resumo: | Cassava is characterized as sensitive to excess of water. Flooding periods directly interfer with the availability of oxygen in the soil, affecting the aerobic processes of the plants. The objectives of this study were: (i) to characterize the effects of excess water on the soil on cassava growth and development; (ii) to identify management practices that reduce the impact of excess water on cassava productivity, and (iii) to estimate the yield potential (PP) and quantify the yield gap (LP). The effects of excess water were evaluated through experiments in vases and in the field and to obtain the PP, the Simanihot model used was. The LP calculated was through the difference between the PP and the yield of the field experiment. Cultivation in vases indicated greater damage to cassava after exposure of 96 and 120 hours of excess water. After 24 hours of excess water about 20% of the plants did not emerge and after 96 hours of excess the emergence of plants was null. In the field, the use of raised beds guaranteed about 60% of the emergency. At the beginning of plant development, 96 and 120 hours of excess water resulted in premature senescence of the leaves. The use of raised beds is a management practice that reduces the impact of excess water. The PP was 11.95 Mg ha-1 for leaves, 61.5 Mg ha-1 for stems and 60.4 Mg ha-1 for roots, and plantings in the months of August and September expressed the maximum PP of up to 27 Mg ha-1. |
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2021-11-23T15:50:35Z2021-11-23T15:50:35Z2020-10-23http://repositorio.ufsm.br/handle/1/22929Cassava is characterized as sensitive to excess of water. Flooding periods directly interfer with the availability of oxygen in the soil, affecting the aerobic processes of the plants. The objectives of this study were: (i) to characterize the effects of excess water on the soil on cassava growth and development; (ii) to identify management practices that reduce the impact of excess water on cassava productivity, and (iii) to estimate the yield potential (PP) and quantify the yield gap (LP). The effects of excess water were evaluated through experiments in vases and in the field and to obtain the PP, the Simanihot model used was. The LP calculated was through the difference between the PP and the yield of the field experiment. Cultivation in vases indicated greater damage to cassava after exposure of 96 and 120 hours of excess water. After 24 hours of excess water about 20% of the plants did not emerge and after 96 hours of excess the emergence of plants was null. In the field, the use of raised beds guaranteed about 60% of the emergency. At the beginning of plant development, 96 and 120 hours of excess water resulted in premature senescence of the leaves. The use of raised beds is a management practice that reduces the impact of excess water. The PP was 11.95 Mg ha-1 for leaves, 61.5 Mg ha-1 for stems and 60.4 Mg ha-1 for roots, and plantings in the months of August and September expressed the maximum PP of up to 27 Mg ha-1.A mandioca é caracterizada como sensível ao excesso hídrico. Períodos de alagamento interferem diretamente na disponibilidade de oxigênio no solo, afetando os processos aeróbios das plantas. Os objetivos desse estudo foram: (i) caracterizar os efeitos do excesso hídrico no solo no crescimento e desenvolvimento da mandioca; (ii) identificar práticas de manejo que reduzam o impacto do excesso hídrico na produtividade de mandioca, (iii) estimar o potencial de produtividade (PP) para quantificar a lacuna de produtividade (LP). Os efeitos do excesso hídrico foram avaliados através de experimentos em vasos e a campo e para obter o PP foi utilizado o modelo Simanihot. A LP foi calculada através da diferença entre o PP e as produtividades do experimento a campo. O cultivo em vasos indicou maiores danos na mandioca após exposição de 96 e 120 horas de excesso hídrico. A cada 24 horas de excesso hídrico, cerca de 20% das plantas não emergiram e, depois de 96 horas de excesso, a emergência foi nula. A campo, o uso de camalhões garantiu cerca de 60% da emergência. No início do desenvolvimento das plantas, 96 e 120 horas de excesso hídrico resultou em senescência prematura das folhas. O uso de camalhão é uma prática de manejo que reduz o impacto do excesso hídrico. O PP foi de 11,95 t ha-1 de folha, 61,5 t ha-1 de haste e 60,4 t ha-1 de raiz, sendo que plantios nos meses de agosto e setembro expressaram os máximos PP. Foram encontradas LP de até 27 t ha-1.porUniversidade Federal de Santa MariaCentro de Ciências RuraisPrograma de Pós-Graduação em Engenharia AgrícolaUFSMBrasilEngenharia AgrícolaAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessEstresse hídricoOxigênioManejoModeloCamalhãoExcess waterOxygenManagementModelRaised bedsCNPQ::CIENCIAS AGRARIAS::ENGENHARIA AGRICOLAExcesso hídrico e seu efeito no crescimento e na produtividade da mandiocaWater excess and its effect on cassava growth and productivityinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisStreck, Nereu Augustohttp://lattes.cnpq.br/8121082379157248Petry, Mirta TeresinhaTironi, Luana Fernandeshttp://lattes.cnpq.br/3957858908137751Alves, Alexandre Ferigolo5003000000086006006003b01ed40-f2a9-4cc8-9109-59e6f482b05d124390ca-c650-4cc4-9b86-a7d787d126db5576e48a-0ed8-4b43-8d05-c4580270b5f16e3f46cc-ab7b-40f8-807e-fb3abab76b5areponame:Biblioteca Digital de Teses e Dissertações do UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMORIGINALDIS_PPGEA_2020_ALVES_ALEXANDRE.pdfDIS_PPGEA_2020_ALVES_ALEXANDRE.pdfDissertação de Mestradoapplication/pdf3047881http://repositorio.ufsm.br/bitstream/1/22929/1/DIS_PPGEA_2020_ALVES_ALEXANDRE.pdf5fd9a3da1c3302d0491ea85070ab0eb7MD51CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; 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dc.title.por.fl_str_mv |
Excesso hídrico e seu efeito no crescimento e na produtividade da mandioca |
dc.title.alternative.eng.fl_str_mv |
Water excess and its effect on cassava growth and productivity |
title |
Excesso hídrico e seu efeito no crescimento e na produtividade da mandioca |
spellingShingle |
Excesso hídrico e seu efeito no crescimento e na produtividade da mandioca Alves, Alexandre Ferigolo Estresse hídrico Oxigênio Manejo Modelo Camalhão Excess water Oxygen Management Model Raised beds CNPQ::CIENCIAS AGRARIAS::ENGENHARIA AGRICOLA |
title_short |
Excesso hídrico e seu efeito no crescimento e na produtividade da mandioca |
title_full |
Excesso hídrico e seu efeito no crescimento e na produtividade da mandioca |
title_fullStr |
Excesso hídrico e seu efeito no crescimento e na produtividade da mandioca |
title_full_unstemmed |
Excesso hídrico e seu efeito no crescimento e na produtividade da mandioca |
title_sort |
Excesso hídrico e seu efeito no crescimento e na produtividade da mandioca |
author |
Alves, Alexandre Ferigolo |
author_facet |
Alves, Alexandre Ferigolo |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Streck, Nereu Augusto |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/8121082379157248 |
dc.contributor.referee1.fl_str_mv |
Petry, Mirta Teresinha |
dc.contributor.referee2.fl_str_mv |
Tironi, Luana Fernandes |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/3957858908137751 |
dc.contributor.author.fl_str_mv |
Alves, Alexandre Ferigolo |
contributor_str_mv |
Streck, Nereu Augusto Petry, Mirta Teresinha Tironi, Luana Fernandes |
dc.subject.por.fl_str_mv |
Estresse hídrico Oxigênio Manejo Modelo Camalhão |
topic |
Estresse hídrico Oxigênio Manejo Modelo Camalhão Excess water Oxygen Management Model Raised beds CNPQ::CIENCIAS AGRARIAS::ENGENHARIA AGRICOLA |
dc.subject.eng.fl_str_mv |
Excess water Oxygen Management Model Raised beds |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS AGRARIAS::ENGENHARIA AGRICOLA |
description |
Cassava is characterized as sensitive to excess of water. Flooding periods directly interfer with the availability of oxygen in the soil, affecting the aerobic processes of the plants. The objectives of this study were: (i) to characterize the effects of excess water on the soil on cassava growth and development; (ii) to identify management practices that reduce the impact of excess water on cassava productivity, and (iii) to estimate the yield potential (PP) and quantify the yield gap (LP). The effects of excess water were evaluated through experiments in vases and in the field and to obtain the PP, the Simanihot model used was. The LP calculated was through the difference between the PP and the yield of the field experiment. Cultivation in vases indicated greater damage to cassava after exposure of 96 and 120 hours of excess water. After 24 hours of excess water about 20% of the plants did not emerge and after 96 hours of excess the emergence of plants was null. In the field, the use of raised beds guaranteed about 60% of the emergency. At the beginning of plant development, 96 and 120 hours of excess water resulted in premature senescence of the leaves. The use of raised beds is a management practice that reduces the impact of excess water. The PP was 11.95 Mg ha-1 for leaves, 61.5 Mg ha-1 for stems and 60.4 Mg ha-1 for roots, and plantings in the months of August and September expressed the maximum PP of up to 27 Mg ha-1. |
publishDate |
2020 |
dc.date.issued.fl_str_mv |
2020-10-23 |
dc.date.accessioned.fl_str_mv |
2021-11-23T15:50:35Z |
dc.date.available.fl_str_mv |
2021-11-23T15:50:35Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://repositorio.ufsm.br/handle/1/22929 |
url |
http://repositorio.ufsm.br/handle/1/22929 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.cnpq.fl_str_mv |
500300000008 |
dc.relation.confidence.fl_str_mv |
600 600 600 |
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 Engenharia Agrícola |
dc.publisher.initials.fl_str_mv |
UFSM |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
Engenharia Agrícola |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria Centro de Ciências Rurais |
dc.source.none.fl_str_mv |
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UFSM |
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Biblioteca Digital de Teses e Dissertações do UFSM |
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