Microclimatic modifications and productive responses of the Iceberg lettuce (Lactuca sativa) in protected environments

Detalhes bibliográficos
Autor(a) principal: Otto,Rosana Fernandes
Data de Publicação: 2013
Outros Autores: Niesing,Priscila Cristina, Cortez,Marluce Gonçalves, Oliveira,Ana Elise de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista ciência agronômica (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902013000400026
Resumo: Experiments were carried out in Ponta Grossa - PR, Brazil, in the winter and spring/summer periods with iceberg lettuces cultivars Lucy Brown and Raider Plus. The objectives were to assess the lettuce productive responses and the intensity of the microclimate modifications in five cropping systems as under shade nets Aluminet 40-O® (AL) and ChromatiNet Vermelha® 40 (CR), a low tunnel covered with transparent polyethylene (TU), direct cover white nonwoven (NW) and natural conditions (NT). A complete randomized design was used for both the experiments with five treatments placed in a 5x2 factorial arrangement (cropping systems x cultivars) and four replications. The photosynthetically active radiation and air temperature were monitored by installing probes in a datalogger system. In the winter both cultivars under NW and TU produced 21 days earlier compared to the other environments but they presented fresh commercial head similar to NT at the end of the cycle and superior to CR and AL. In the spring/summer there was no difference in the lettuce cycle regardless of the cultivar and the cropping systems. The Lucy Brown cultivar presented smaller sized heads for the winter cropping but did not differ from Raider Plus during the spring/summer. The mean air temperature of the air under NW was higher than in the other environments in both experiments. The use of the different covering materials reduced the photosynthetically active radiation available to the plant but did not prevent commercial head production of Iceberg lettuce.
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spelling Microclimatic modifications and productive responses of the Iceberg lettuce (Lactuca sativa) in protected environmentsTunnelNonwovenAluminet 40-O®ChromatiNet Vermelha® 40PolypropyleneExperiments were carried out in Ponta Grossa - PR, Brazil, in the winter and spring/summer periods with iceberg lettuces cultivars Lucy Brown and Raider Plus. The objectives were to assess the lettuce productive responses and the intensity of the microclimate modifications in five cropping systems as under shade nets Aluminet 40-O® (AL) and ChromatiNet Vermelha® 40 (CR), a low tunnel covered with transparent polyethylene (TU), direct cover white nonwoven (NW) and natural conditions (NT). A complete randomized design was used for both the experiments with five treatments placed in a 5x2 factorial arrangement (cropping systems x cultivars) and four replications. The photosynthetically active radiation and air temperature were monitored by installing probes in a datalogger system. In the winter both cultivars under NW and TU produced 21 days earlier compared to the other environments but they presented fresh commercial head similar to NT at the end of the cycle and superior to CR and AL. In the spring/summer there was no difference in the lettuce cycle regardless of the cultivar and the cropping systems. The Lucy Brown cultivar presented smaller sized heads for the winter cropping but did not differ from Raider Plus during the spring/summer. The mean air temperature of the air under NW was higher than in the other environments in both experiments. The use of the different covering materials reduced the photosynthetically active radiation available to the plant but did not prevent commercial head production of Iceberg lettuce.Universidade Federal do Ceará2013-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902013000400026Revista Ciência Agronômica v.44 n.4 2013reponame:Revista ciência agronômica (Online)instname:Universidade Federal do Ceará (UFC)instacron:UFC10.1590/S1806-66902013000400026info:eu-repo/semantics/openAccessOtto,Rosana FernandesNiesing,Priscila CristinaCortez,Marluce GonçalvesOliveira,Ana Elise deeng2013-09-30T00:00:00Zoai:scielo:S1806-66902013000400026Revistahttp://www.ccarevista.ufc.br/PUBhttps://old.scielo.br/oai/scielo-oai.php||alekdutra@ufc.br|| ccarev@ufc.br1806-66900045-6888opendoar:2013-09-30T00:00Revista ciência agronômica (Online) - Universidade Federal do Ceará (UFC)false
dc.title.none.fl_str_mv Microclimatic modifications and productive responses of the Iceberg lettuce (Lactuca sativa) in protected environments
title Microclimatic modifications and productive responses of the Iceberg lettuce (Lactuca sativa) in protected environments
spellingShingle Microclimatic modifications and productive responses of the Iceberg lettuce (Lactuca sativa) in protected environments
Otto,Rosana Fernandes
Tunnel
Nonwoven
Aluminet 40-O®
ChromatiNet Vermelha® 40
Polypropylene
title_short Microclimatic modifications and productive responses of the Iceberg lettuce (Lactuca sativa) in protected environments
title_full Microclimatic modifications and productive responses of the Iceberg lettuce (Lactuca sativa) in protected environments
title_fullStr Microclimatic modifications and productive responses of the Iceberg lettuce (Lactuca sativa) in protected environments
title_full_unstemmed Microclimatic modifications and productive responses of the Iceberg lettuce (Lactuca sativa) in protected environments
title_sort Microclimatic modifications and productive responses of the Iceberg lettuce (Lactuca sativa) in protected environments
author Otto,Rosana Fernandes
author_facet Otto,Rosana Fernandes
Niesing,Priscila Cristina
Cortez,Marluce Gonçalves
Oliveira,Ana Elise de
author_role author
author2 Niesing,Priscila Cristina
Cortez,Marluce Gonçalves
Oliveira,Ana Elise de
author2_role author
author
author
dc.contributor.author.fl_str_mv Otto,Rosana Fernandes
Niesing,Priscila Cristina
Cortez,Marluce Gonçalves
Oliveira,Ana Elise de
dc.subject.por.fl_str_mv Tunnel
Nonwoven
Aluminet 40-O®
ChromatiNet Vermelha® 40
Polypropylene
topic Tunnel
Nonwoven
Aluminet 40-O®
ChromatiNet Vermelha® 40
Polypropylene
description Experiments were carried out in Ponta Grossa - PR, Brazil, in the winter and spring/summer periods with iceberg lettuces cultivars Lucy Brown and Raider Plus. The objectives were to assess the lettuce productive responses and the intensity of the microclimate modifications in five cropping systems as under shade nets Aluminet 40-O® (AL) and ChromatiNet Vermelha® 40 (CR), a low tunnel covered with transparent polyethylene (TU), direct cover white nonwoven (NW) and natural conditions (NT). A complete randomized design was used for both the experiments with five treatments placed in a 5x2 factorial arrangement (cropping systems x cultivars) and four replications. The photosynthetically active radiation and air temperature were monitored by installing probes in a datalogger system. In the winter both cultivars under NW and TU produced 21 days earlier compared to the other environments but they presented fresh commercial head similar to NT at the end of the cycle and superior to CR and AL. In the spring/summer there was no difference in the lettuce cycle regardless of the cultivar and the cropping systems. The Lucy Brown cultivar presented smaller sized heads for the winter cropping but did not differ from Raider Plus during the spring/summer. The mean air temperature of the air under NW was higher than in the other environments in both experiments. The use of the different covering materials reduced the photosynthetically active radiation available to the plant but did not prevent commercial head production of Iceberg lettuce.
publishDate 2013
dc.date.none.fl_str_mv 2013-12-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902013000400026
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902013000400026
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1806-66902013000400026
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Universidade Federal do Ceará
publisher.none.fl_str_mv Universidade Federal do Ceará
dc.source.none.fl_str_mv Revista Ciência Agronômica v.44 n.4 2013
reponame:Revista ciência agronômica (Online)
instname:Universidade Federal do Ceará (UFC)
instacron:UFC
instname_str Universidade Federal do Ceará (UFC)
instacron_str UFC
institution UFC
reponame_str Revista ciência agronômica (Online)
collection Revista ciência agronômica (Online)
repository.name.fl_str_mv Revista ciência agronômica (Online) - Universidade Federal do Ceará (UFC)
repository.mail.fl_str_mv ||alekdutra@ufc.br|| ccarev@ufc.br
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