Response of bell pepper to water replacement levels and irrigation times
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Pesquisa Agropecuária Tropical (Online) |
Texto Completo: | https://revistas.ufg.br/pat/article/view/53662 |
Resumo: | Different irrigation times result in variable transpiration rates, due to the water availability and its interaction with the evapotranspiration demand. The vapor pressure deficit is an accurate indicator of the atmosfere evaporative capacity and can affect plants because of the movement of water in the soil-plant-atmosphere continuum system. This study aimed to evaluate the plant growth, yield and water-use efficiency of bell peppers under irrigation times (8 a.m. and 2 p.m.) and water replacement levels (60 %, 80 %, 100 %, 120 % and 140 % of the crop water requirement - ETc) based on the evapotranspiration demand. The increase in the irrigation levels could be fit to linear models for the variables number of fruits per plant, mean and total fruit weight per plant, fruit length, and root, stem and total dry weight. Irrigation at 2 p.m. increased the total and mean fruit weight and number of fruits per plant, as well as fruit length, if compared to the irrigation at 8 a.m., besides increasing the yield by 50.82 % (2,343.0 g plant-1 to 3,533.6 g plant-1) and the water-use efficiency by 55.64 %. In areas subjected to water shortages, establishing irrigation times based on irrigation management practices can increase the water-use efficiency and yield for bell peppers. KEYWORDS: Capsicum annuum L., vapor pressure deficit, water-use efficiency. |
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Response of bell pepper to water replacement levels and irrigation timesResposta de pimentão a níveis de reposição hídrica e horários de irrigaçãoDifferent irrigation times result in variable transpiration rates, due to the water availability and its interaction with the evapotranspiration demand. The vapor pressure deficit is an accurate indicator of the atmosfere evaporative capacity and can affect plants because of the movement of water in the soil-plant-atmosphere continuum system. This study aimed to evaluate the plant growth, yield and water-use efficiency of bell peppers under irrigation times (8 a.m. and 2 p.m.) and water replacement levels (60 %, 80 %, 100 %, 120 % and 140 % of the crop water requirement - ETc) based on the evapotranspiration demand. The increase in the irrigation levels could be fit to linear models for the variables number of fruits per plant, mean and total fruit weight per plant, fruit length, and root, stem and total dry weight. Irrigation at 2 p.m. increased the total and mean fruit weight and number of fruits per plant, as well as fruit length, if compared to the irrigation at 8 a.m., besides increasing the yield by 50.82 % (2,343.0 g plant-1 to 3,533.6 g plant-1) and the water-use efficiency by 55.64 %. In areas subjected to water shortages, establishing irrigation times based on irrigation management practices can increase the water-use efficiency and yield for bell peppers. KEYWORDS: Capsicum annuum L., vapor pressure deficit, water-use efficiency.Diferentes horários de irrigação resultam em diferentes taxas de transpiração, devido à disponibilidade de água e sua interação com a demanda evapotranspirativa. O déficit de pressão de vapor é um indicador preciso da capacidade evaporativa da atmosfera e pode afetar as plantas, devido ao movimento da água no sistema contínuo solo-planta-atmosfera. Objetivou-se avaliar o crescimento, produtividade e eficiência do uso da água de pimentões submetidos a horários (08:00 h e 14:00 h) e níveis de reposição hídrica (60 %, 80 %, 100 %, 120 % e 140 % da necessidade hídrica da cultura - ETc) baseados na demanda evapotranspirativa. O aumento nos níveis de irrigação puderam ser ajustados ao modelo linear para as variáveis número de frutos por planta, peso médio e total de frutos por planta, comprimento dos frutos e peso seco da raiz, do caule e total. A irrigação às 14:00 h aumentou o peso total e médio e o número de frutos por planta, bem como o comprimento dos frutos, se comparada à irrigação às 08:00 h, além de aumentar a produtividade em 50,82 % (2.343,0 g planta-1 para 3.533,6 g planta-1) e a eficiência do uso da água em 55,64 %. Em áreas sujeitas à escassez de água, o estabelecimento de horários de irrigação baseados em práticas de manejo de irrigação pode aumentar a produtividade e a eficiência no uso de água em pimentões. PALAVRAS-CHAVE: Capsicum annuum L., déficit de pressão de vapor, eficiência no uso de água.Escola de Agronomia - Universidade Federal de Goiás2019-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionAvaliado por paresapplication/pdfhttps://revistas.ufg.br/pat/article/view/53662Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; Vol. 49 (2019); e53662Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); Vol. 49 (2019); e53662Pesquisa Agropecuária Tropical; v. 49 (2019); e536621983-4063reponame:Pesquisa Agropecuária Tropical (Online)instname:Universidade Federal de Goiás (UFG)instacron:UFGenghttps://revistas.ufg.br/pat/article/view/53662/32744Cândido de Souza, Álvaro HenriqueRezende, RobertoLorenzoni, Marcelo ZolinSilva Santos, Fernando Andréde Oliveira, Jhonatan Monteiroinfo:eu-repo/semantics/openAccess2020-03-02T13:31:20Zoai:ojs.revistas.ufg.br:article/53662Revistahttps://revistas.ufg.br/patPUBhttps://revistas.ufg.br/pat/oaiaseleguini.pat@gmail.com||mgoes@agro.ufg.br1983-40631517-6398opendoar:2024-05-21T19:56:22.903206Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG)true |
dc.title.none.fl_str_mv |
Response of bell pepper to water replacement levels and irrigation times Resposta de pimentão a níveis de reposição hídrica e horários de irrigação |
title |
Response of bell pepper to water replacement levels and irrigation times |
spellingShingle |
Response of bell pepper to water replacement levels and irrigation times Cândido de Souza, Álvaro Henrique |
title_short |
Response of bell pepper to water replacement levels and irrigation times |
title_full |
Response of bell pepper to water replacement levels and irrigation times |
title_fullStr |
Response of bell pepper to water replacement levels and irrigation times |
title_full_unstemmed |
Response of bell pepper to water replacement levels and irrigation times |
title_sort |
Response of bell pepper to water replacement levels and irrigation times |
author |
Cândido de Souza, Álvaro Henrique |
author_facet |
Cândido de Souza, Álvaro Henrique Rezende, Roberto Lorenzoni, Marcelo Zolin Silva Santos, Fernando André de Oliveira, Jhonatan Monteiro |
author_role |
author |
author2 |
Rezende, Roberto Lorenzoni, Marcelo Zolin Silva Santos, Fernando André de Oliveira, Jhonatan Monteiro |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Cândido de Souza, Álvaro Henrique Rezende, Roberto Lorenzoni, Marcelo Zolin Silva Santos, Fernando André de Oliveira, Jhonatan Monteiro |
description |
Different irrigation times result in variable transpiration rates, due to the water availability and its interaction with the evapotranspiration demand. The vapor pressure deficit is an accurate indicator of the atmosfere evaporative capacity and can affect plants because of the movement of water in the soil-plant-atmosphere continuum system. This study aimed to evaluate the plant growth, yield and water-use efficiency of bell peppers under irrigation times (8 a.m. and 2 p.m.) and water replacement levels (60 %, 80 %, 100 %, 120 % and 140 % of the crop water requirement - ETc) based on the evapotranspiration demand. The increase in the irrigation levels could be fit to linear models for the variables number of fruits per plant, mean and total fruit weight per plant, fruit length, and root, stem and total dry weight. Irrigation at 2 p.m. increased the total and mean fruit weight and number of fruits per plant, as well as fruit length, if compared to the irrigation at 8 a.m., besides increasing the yield by 50.82 % (2,343.0 g plant-1 to 3,533.6 g plant-1) and the water-use efficiency by 55.64 %. In areas subjected to water shortages, establishing irrigation times based on irrigation management practices can increase the water-use efficiency and yield for bell peppers. KEYWORDS: Capsicum annuum L., vapor pressure deficit, water-use efficiency. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-03-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Avaliado por pares |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://revistas.ufg.br/pat/article/view/53662 |
url |
https://revistas.ufg.br/pat/article/view/53662 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://revistas.ufg.br/pat/article/view/53662/32744 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Escola de Agronomia - Universidade Federal de Goiás |
publisher.none.fl_str_mv |
Escola de Agronomia - Universidade Federal de Goiás |
dc.source.none.fl_str_mv |
Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; Vol. 49 (2019); e53662 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); Vol. 49 (2019); e53662 Pesquisa Agropecuária Tropical; v. 49 (2019); e53662 1983-4063 reponame:Pesquisa Agropecuária Tropical (Online) instname:Universidade Federal de Goiás (UFG) instacron:UFG |
instname_str |
Universidade Federal de Goiás (UFG) |
instacron_str |
UFG |
institution |
UFG |
reponame_str |
Pesquisa Agropecuária Tropical (Online) |
collection |
Pesquisa Agropecuária Tropical (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG) |
repository.mail.fl_str_mv |
aseleguini.pat@gmail.com||mgoes@agro.ufg.br |
_version_ |
1799874820037410816 |