Water retention curve of coconut fiber substrate for cultivation in pots in greenhouse
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Revista Verde de Agroecologia e Desenvolvimento Sustentavel |
Texto Completo: | https://www.gvaa.com.br/revista/index.php/RVADS/article/view/8661 |
Resumo: | A substrate with adequate porosity and water retention capacity makes it possible to maximize the yield and quality of crops produced in containers in greenhouses. A great alternative is coconut fiber, which needs careful irrigation management, which can be based on monitoring the water content in the root zone using tensiometers. In this sense, this work aimed to determine the water retention curve of coconut fiber in pots through the technique of water removal by evaporation and measurement of water tension with tensiometers, after which the pots were weighed and the corresponding water content was calculated by difference between the measured mass and the dry substrate mass. A data acquisition system was used to record the readings from the tensiometer pressure transducers. Tension, water amount and substrate density data were used to fit the water retention curves according to regression models and the Van Genuchten model. The use of tensiometers in the coconut fiber substrate made it possible to determine the water retention curve quickly and practically from almost continuous tension readings between 12 and 268 hPa, corresponding to water contents between 0.37 and 0.05 cm3 cm-3. Thus, it was possible to adjust the retention curve in a simple way, using regression models with high coefficients of determination. Although the hydric parameters of the substrate are lower than those referred to in the literature, they are useful to adequately manage irrigation in containers. |
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Water retention curve of coconut fiber substrate for cultivation in pots in greenhouseCurva de retención de agua en sustrato de fibra de coco para cultivo en contenedores en ambiente protegidoCurva de retenção de água em substrato de fibra de coco para cultivos em vasos em ambiente protegidoIrrigation managementWater contentTensiometerGestión del riegoContenido de aguaTensiómetroManejo da irrigaçãoTeor de águaTensiômetroA substrate with adequate porosity and water retention capacity makes it possible to maximize the yield and quality of crops produced in containers in greenhouses. A great alternative is coconut fiber, which needs careful irrigation management, which can be based on monitoring the water content in the root zone using tensiometers. In this sense, this work aimed to determine the water retention curve of coconut fiber in pots through the technique of water removal by evaporation and measurement of water tension with tensiometers, after which the pots were weighed and the corresponding water content was calculated by difference between the measured mass and the dry substrate mass. A data acquisition system was used to record the readings from the tensiometer pressure transducers. Tension, water amount and substrate density data were used to fit the water retention curves according to regression models and the Van Genuchten model. The use of tensiometers in the coconut fiber substrate made it possible to determine the water retention curve quickly and practically from almost continuous tension readings between 12 and 268 hPa, corresponding to water contents between 0.37 and 0.05 cm3 cm-3. Thus, it was possible to adjust the retention curve in a simple way, using regression models with high coefficients of determination. Although the hydric parameters of the substrate are lower than those referred to in the literature, they are useful to adequately manage irrigation in containers.Un sustrato con adecuada porosidad y capacidad de retención de agua permite maximizar la productividad y calidad de los cultivos producidos en contenedores bajo un ambiente protegido. La fibra de coco es una gran alternativa, pero requiere un manejo cuidadoso del riego, que puede basarse en monitorear el contenido de agua en la zona de la raíz mediante tensiómetros. En este sentido, el objetivo de este trabajo fue determinar la curva de retención de agua en fibra de coco en envases. La técnica utilizada fue la remoción de agua por evaporación y medición de la tensión hídrica con tensiómetros, con posterior pesaje de los recipientes y cálculo del contenido de agua correspondiente por diferencia entre la masa medida y la masa del sustrato seco. Se utilizó un sistema de adquisición de datos para registrar las lecturas de los transductores de presión del tensiómetro. Se utilizaron datos de tensión, cantidad de agua y densidad del sustrato para ajustar las curvas de retención de agua de acuerdo con los modelos de regresión y el modelo de Van Genuchten. El uso de tensiómetros dentro del sustrato de fibra de coco permitió determinar la curva de retención de agua de forma rápida y práctica, a partir de lecturas de tensión casi continuas entre 12 y 268 hPa, referidas a contenidos de agua entre 0,37 y 0,05 cm3 cm-3. Así, fue posible ajustar la curva de retención de forma sencilla, utilizando modelos de regresión con altos coeficientes de determinación. Los parámetros hídricos obtenidos del sustrato son menores a los referidos en la literatura y son útiles para el correcto manejo del riego en recipientes que contienen el mismo sustrato.Um substrato com porosidade e capacidade de retenção de água adequadas possibilita maximizar a produtividade e qualidade das culturas produzidas em recipientes sob ambiente protegido. A fibra de coco é uma ótima alternativa, mas requer manejo cuidadoso da irrigação, podendo ser baseado no monitoramento do teor de água na zona radicular usando tensiômetros. Nesse sentido, objetivou-se com este trabalho determinar a curva de retenção de água em fibra de coco em vasos. A técnica usada foi a remoção de água por evaporação e medição da tensão da água com tensiômetros, com posterior pesagem dos vasos e cálculo do teor de água correspondente por diferença entre massa medida e massa do substrato seco. Um sistema de aquisição de dados foi usado para registrar as leituras dos transdutores de pressão dos tensiômetros. Os dados de tensão, quantidade de água e densidade do substrato foram usados para ajustar as curvas de retenção de água conforme modelos de regressão e o modelo de Van Genuchten. O uso de tensiômetros no substrato fibra de coco possibilitou determinar a curva de retenção de água de maneira rápida e prática, a partir de leituras de tensão quase contínuas entre 12 e 268 hPa, referentes a teores de água entre 0,37 e 0,05 cm3 cm-3. Assim, foi possível ajustar a curva de retenção de forma simples, usando modelos de regressão com elevados coeficientes de determinação. Os parâmetros hídricos obtidos do substrato são menores do que os referidos na literatura e úteis para o manejo adequado da irrigação em recipientes contendo o mesmo substrato.Editora Verde2021-07-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.gvaa.com.br/revista/index.php/RVADS/article/view/866110.18378/rvads.v16i3.8661Revista Verde de Agroecologia e Desenvolvimento Sustentável; Vol. 16 No. 3 (2021); 259 - 265Revista Verde de Agroecologia e Desenvolvimento Sustentável; Vol. 16 Núm. 3 (2021); 259 - 265Revista Verde de Agroecologia e Desenvolvimento Sustentável; v. 16 n. 3 (2021); 259 - 2651981-8203reponame:Revista Verde de Agroecologia e Desenvolvimento Sustentavelinstname:Grupo Verde de Agroecologia e Abelhas (GVAA)instacron:GVAAporhttps://www.gvaa.com.br/revista/index.php/RVADS/article/view/8661/10887Copyright (c) 2021 Erlen Kaline Ávila do Nascimento et al.info:eu-repo/semantics/openAccessNascimento, Erlen Kaline Ávila doRego, Lunara Gleika da SilvaMiranda, Neyton de OliveiraFigueirêdo, Vladimir BatistaSilva, Nathalia Gomes2022-10-20T21:02:11Zoai:ojs.gvaa.com.br:article/8661Revistahttps://www.gvaa.com.br/revista/index.php/RVADS/PUBhttps://www.gvaa.com.br/revista/index.php/RVADS/oairvadsgvaa@gmail.com || patriciomaracaja@gmail.com || revistaverde1@gmail.com || suporte@antsoft.com.br1981-82031981-8203opendoar:2024-03-06T12:59:46.278189Revista Verde de Agroecologia e Desenvolvimento Sustentavel - Grupo Verde de Agroecologia e Abelhas (GVAA)false |
dc.title.none.fl_str_mv |
Water retention curve of coconut fiber substrate for cultivation in pots in greenhouse Curva de retención de agua en sustrato de fibra de coco para cultivo en contenedores en ambiente protegido Curva de retenção de água em substrato de fibra de coco para cultivos em vasos em ambiente protegido |
title |
Water retention curve of coconut fiber substrate for cultivation in pots in greenhouse |
spellingShingle |
Water retention curve of coconut fiber substrate for cultivation in pots in greenhouse Nascimento, Erlen Kaline Ávila do Irrigation management Water content Tensiometer Gestión del riego Contenido de agua Tensiómetro Manejo da irrigação Teor de água Tensiômetro |
title_short |
Water retention curve of coconut fiber substrate for cultivation in pots in greenhouse |
title_full |
Water retention curve of coconut fiber substrate for cultivation in pots in greenhouse |
title_fullStr |
Water retention curve of coconut fiber substrate for cultivation in pots in greenhouse |
title_full_unstemmed |
Water retention curve of coconut fiber substrate for cultivation in pots in greenhouse |
title_sort |
Water retention curve of coconut fiber substrate for cultivation in pots in greenhouse |
author |
Nascimento, Erlen Kaline Ávila do |
author_facet |
Nascimento, Erlen Kaline Ávila do Rego, Lunara Gleika da Silva Miranda, Neyton de Oliveira Figueirêdo, Vladimir Batista Silva, Nathalia Gomes |
author_role |
author |
author2 |
Rego, Lunara Gleika da Silva Miranda, Neyton de Oliveira Figueirêdo, Vladimir Batista Silva, Nathalia Gomes |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Nascimento, Erlen Kaline Ávila do Rego, Lunara Gleika da Silva Miranda, Neyton de Oliveira Figueirêdo, Vladimir Batista Silva, Nathalia Gomes |
dc.subject.por.fl_str_mv |
Irrigation management Water content Tensiometer Gestión del riego Contenido de agua Tensiómetro Manejo da irrigação Teor de água Tensiômetro |
topic |
Irrigation management Water content Tensiometer Gestión del riego Contenido de agua Tensiómetro Manejo da irrigação Teor de água Tensiômetro |
description |
A substrate with adequate porosity and water retention capacity makes it possible to maximize the yield and quality of crops produced in containers in greenhouses. A great alternative is coconut fiber, which needs careful irrigation management, which can be based on monitoring the water content in the root zone using tensiometers. In this sense, this work aimed to determine the water retention curve of coconut fiber in pots through the technique of water removal by evaporation and measurement of water tension with tensiometers, after which the pots were weighed and the corresponding water content was calculated by difference between the measured mass and the dry substrate mass. A data acquisition system was used to record the readings from the tensiometer pressure transducers. Tension, water amount and substrate density data were used to fit the water retention curves according to regression models and the Van Genuchten model. The use of tensiometers in the coconut fiber substrate made it possible to determine the water retention curve quickly and practically from almost continuous tension readings between 12 and 268 hPa, corresponding to water contents between 0.37 and 0.05 cm3 cm-3. Thus, it was possible to adjust the retention curve in a simple way, using regression models with high coefficients of determination. Although the hydric parameters of the substrate are lower than those referred to in the literature, they are useful to adequately manage irrigation in containers. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-07-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://www.gvaa.com.br/revista/index.php/RVADS/article/view/8661 10.18378/rvads.v16i3.8661 |
url |
https://www.gvaa.com.br/revista/index.php/RVADS/article/view/8661 |
identifier_str_mv |
10.18378/rvads.v16i3.8661 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://www.gvaa.com.br/revista/index.php/RVADS/article/view/8661/10887 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2021 Erlen Kaline Ávila do Nascimento et al. info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2021 Erlen Kaline Ávila do Nascimento et al. |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Editora Verde |
publisher.none.fl_str_mv |
Editora Verde |
dc.source.none.fl_str_mv |
Revista Verde de Agroecologia e Desenvolvimento Sustentável; Vol. 16 No. 3 (2021); 259 - 265 Revista Verde de Agroecologia e Desenvolvimento Sustentável; Vol. 16 Núm. 3 (2021); 259 - 265 Revista Verde de Agroecologia e Desenvolvimento Sustentável; v. 16 n. 3 (2021); 259 - 265 1981-8203 reponame:Revista Verde de Agroecologia e Desenvolvimento Sustentavel instname:Grupo Verde de Agroecologia e Abelhas (GVAA) instacron:GVAA |
instname_str |
Grupo Verde de Agroecologia e Abelhas (GVAA) |
instacron_str |
GVAA |
institution |
GVAA |
reponame_str |
Revista Verde de Agroecologia e Desenvolvimento Sustentavel |
collection |
Revista Verde de Agroecologia e Desenvolvimento Sustentavel |
repository.name.fl_str_mv |
Revista Verde de Agroecologia e Desenvolvimento Sustentavel - Grupo Verde de Agroecologia e Abelhas (GVAA) |
repository.mail.fl_str_mv |
rvadsgvaa@gmail.com || patriciomaracaja@gmail.com || revistaverde1@gmail.com || suporte@antsoft.com.br |
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1798948092950609920 |