ENVIRONMENTAL MODIFICATION CAUSED BY PERFORATED TRANSPARENT POLYETHYLENE LOW TUNNELS CULTIVATED WITH LETTUCE
Autor(a) principal: | |
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Data de Publicação: | 1993 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Ciência Rural |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84781993000300001 |
Resumo: | Environmental modifications caused by low tunnels made of perforated transparent polyethylene were determineted in an area alocated at the Federal University of Santa Maria, RS. The perforation densities were 100, 200, 300 and 400 perforations per square meter, corresponding respectively to 0.78% (T1), 1.57% CT2), 2.35% (T3) and 3.14% (T4) of area perforated. The results indicated that perforation density did not significantly affected solar energy availability. As perforation density increased there was a decrease on the average diurnal air temperature which demonstrated the viability of ventilating low tunnels with perforated plastic. It was also observed that inside the perforated tunnels the averages values for soil, air minimun and diurnal temperatures and air relative humidity were higher than on the external environment. |
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Ciência rural (Online) |
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ENVIRONMENTAL MODIFICATION CAUSED BY PERFORATED TRANSPARENT POLYETHYLENE LOW TUNNELS CULTIVATED WITH LETTUCElow tunnelsmanagementenvironment variablesEnvironmental modifications caused by low tunnels made of perforated transparent polyethylene were determineted in an area alocated at the Federal University of Santa Maria, RS. The perforation densities were 100, 200, 300 and 400 perforations per square meter, corresponding respectively to 0.78% (T1), 1.57% CT2), 2.35% (T3) and 3.14% (T4) of area perforated. The results indicated that perforation density did not significantly affected solar energy availability. As perforation density increased there was a decrease on the average diurnal air temperature which demonstrated the viability of ventilating low tunnels with perforated plastic. It was also observed that inside the perforated tunnels the averages values for soil, air minimun and diurnal temperatures and air relative humidity were higher than on the external environment.Universidade Federal de Santa Maria1993-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84781993000300001Ciência Rural v.23 n.3 1993reponame:Ciência Ruralinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSM10.1590/S0103-84781993000300001info:eu-repo/semantics/openAccessBuriol,Galileo AdeliSchneider,Flavio MiguelStreck,Nereu AugustoMedeiros,Sandro Luís Pettereng2014-09-03T00:00:00ZRevista |
dc.title.none.fl_str_mv |
ENVIRONMENTAL MODIFICATION CAUSED BY PERFORATED TRANSPARENT POLYETHYLENE LOW TUNNELS CULTIVATED WITH LETTUCE |
title |
ENVIRONMENTAL MODIFICATION CAUSED BY PERFORATED TRANSPARENT POLYETHYLENE LOW TUNNELS CULTIVATED WITH LETTUCE |
spellingShingle |
ENVIRONMENTAL MODIFICATION CAUSED BY PERFORATED TRANSPARENT POLYETHYLENE LOW TUNNELS CULTIVATED WITH LETTUCE Buriol,Galileo Adeli low tunnels management environment variables |
title_short |
ENVIRONMENTAL MODIFICATION CAUSED BY PERFORATED TRANSPARENT POLYETHYLENE LOW TUNNELS CULTIVATED WITH LETTUCE |
title_full |
ENVIRONMENTAL MODIFICATION CAUSED BY PERFORATED TRANSPARENT POLYETHYLENE LOW TUNNELS CULTIVATED WITH LETTUCE |
title_fullStr |
ENVIRONMENTAL MODIFICATION CAUSED BY PERFORATED TRANSPARENT POLYETHYLENE LOW TUNNELS CULTIVATED WITH LETTUCE |
title_full_unstemmed |
ENVIRONMENTAL MODIFICATION CAUSED BY PERFORATED TRANSPARENT POLYETHYLENE LOW TUNNELS CULTIVATED WITH LETTUCE |
title_sort |
ENVIRONMENTAL MODIFICATION CAUSED BY PERFORATED TRANSPARENT POLYETHYLENE LOW TUNNELS CULTIVATED WITH LETTUCE |
author |
Buriol,Galileo Adeli |
author_facet |
Buriol,Galileo Adeli Schneider,Flavio Miguel Streck,Nereu Augusto Medeiros,Sandro Luís Petter |
author_role |
author |
author2 |
Schneider,Flavio Miguel Streck,Nereu Augusto Medeiros,Sandro Luís Petter |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Buriol,Galileo Adeli Schneider,Flavio Miguel Streck,Nereu Augusto Medeiros,Sandro Luís Petter |
dc.subject.por.fl_str_mv |
low tunnels management environment variables |
topic |
low tunnels management environment variables |
description |
Environmental modifications caused by low tunnels made of perforated transparent polyethylene were determineted in an area alocated at the Federal University of Santa Maria, RS. The perforation densities were 100, 200, 300 and 400 perforations per square meter, corresponding respectively to 0.78% (T1), 1.57% CT2), 2.35% (T3) and 3.14% (T4) of area perforated. The results indicated that perforation density did not significantly affected solar energy availability. As perforation density increased there was a decrease on the average diurnal air temperature which demonstrated the viability of ventilating low tunnels with perforated plastic. It was also observed that inside the perforated tunnels the averages values for soil, air minimun and diurnal temperatures and air relative humidity were higher than on the external environment. |
publishDate |
1993 |
dc.date.none.fl_str_mv |
1993-12-01 |
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=S0103-84781993000300001 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84781993000300001 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0103-84781993000300001 |
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 de Santa Maria |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria |
dc.source.none.fl_str_mv |
Ciência Rural v.23 n.3 1993 reponame:Ciência Rural instname:Universidade Federal de Santa Maria (UFSM) instacron:UFSM |
instname_str |
Universidade Federal de Santa Maria (UFSM) |
instacron_str |
UFSM |
institution |
UFSM |
reponame_str |
Ciência Rural |
collection |
Ciência Rural |
repository.name.fl_str_mv |
|
repository.mail.fl_str_mv |
|
_version_ |
1749140518298714112 |