Growth and development of sourgrass based on days or thermal units
Autor(a) principal: | |
---|---|
Data de Publicação: | 2014 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Planta daninha (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582014000300003 |
Resumo: | This work was carried out with the objective of evaluating growth and development of sourgrass (Digitaris insularis) based on days or thermal units (growing degree days - GDD). Two independent trials were developed aiming to quantify the species' phenological development and total dry matter accumulation in increasing or decreasing photoperiod conditions. Plants were grown in 4 L plastic pots, filled with commercial substrate, adequately fertilized. In each trial, nine growth evaluations were carried out, with three replicates. Phenological development of sourgrass was correctly fit to time scale in days or GDD, through linear equation of first degree. Sourgrass has slow initial growth, followed by exponential dry matter accumulation, in increasing photoperiod condition. Maximum total dry matter was 75 and 6 g per plant for increasing and decreasing photoperiod conditions, respectively. Thus, phenological development of sourgrass may be predicted by mathematical models based on days or GDD; however, it should be noted that other environmental variables interfere on the species' growth (mass accumulation), especially photoperiod. |
id |
SBCPD-1_0fe564b3425ba3fc50e127a174e33691 |
---|---|
oai_identifier_str |
oai:scielo:S0100-83582014000300003 |
network_acronym_str |
SBCPD-1 |
network_name_str |
Planta daninha (Online) |
repository_id_str |
|
spelling |
Growth and development of sourgrass based on days or thermal unitsDigitaria insularisgrowing degree daysphenologydry matterbiologyThis work was carried out with the objective of evaluating growth and development of sourgrass (Digitaris insularis) based on days or thermal units (growing degree days - GDD). Two independent trials were developed aiming to quantify the species' phenological development and total dry matter accumulation in increasing or decreasing photoperiod conditions. Plants were grown in 4 L plastic pots, filled with commercial substrate, adequately fertilized. In each trial, nine growth evaluations were carried out, with three replicates. Phenological development of sourgrass was correctly fit to time scale in days or GDD, through linear equation of first degree. Sourgrass has slow initial growth, followed by exponential dry matter accumulation, in increasing photoperiod condition. Maximum total dry matter was 75 and 6 g per plant for increasing and decreasing photoperiod conditions, respectively. Thus, phenological development of sourgrass may be predicted by mathematical models based on days or GDD; however, it should be noted that other environmental variables interfere on the species' growth (mass accumulation), especially photoperiod.Sociedade Brasileira da Ciência das Plantas Daninhas 2014-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582014000300003Planta Daninha v.32 n.3 2014reponame:Planta daninha (Online)instname:Sociedade Brasileira da Ciência das Plantas Daninhas (SBCPD)instacron:SBCPD10.1590/S0100-83582014000300003info:eu-repo/semantics/openAccessMarques,B.S.Silva,A.P.P.Lima,R.S.O.Machado,E.C.R.Gonçalves,M.F.Carvalho,S.J.P.eng2014-09-15T00:00:00Zoai:scielo:S0100-83582014000300003Revistahttp://revistas.cpd.ufv.br/pdaninhaweb/https://old.scielo.br/oai/scielo-oai.php||rpdaninha@gmail.com1806-96810100-8358opendoar:2014-09-15T00:00Planta daninha (Online) - Sociedade Brasileira da Ciência das Plantas Daninhas (SBCPD)false |
dc.title.none.fl_str_mv |
Growth and development of sourgrass based on days or thermal units |
title |
Growth and development of sourgrass based on days or thermal units |
spellingShingle |
Growth and development of sourgrass based on days or thermal units Marques,B.S. Digitaria insularis growing degree days phenology dry matter biology |
title_short |
Growth and development of sourgrass based on days or thermal units |
title_full |
Growth and development of sourgrass based on days or thermal units |
title_fullStr |
Growth and development of sourgrass based on days or thermal units |
title_full_unstemmed |
Growth and development of sourgrass based on days or thermal units |
title_sort |
Growth and development of sourgrass based on days or thermal units |
author |
Marques,B.S. |
author_facet |
Marques,B.S. Silva,A.P.P. Lima,R.S.O. Machado,E.C.R. Gonçalves,M.F. Carvalho,S.J.P. |
author_role |
author |
author2 |
Silva,A.P.P. Lima,R.S.O. Machado,E.C.R. Gonçalves,M.F. Carvalho,S.J.P. |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Marques,B.S. Silva,A.P.P. Lima,R.S.O. Machado,E.C.R. Gonçalves,M.F. Carvalho,S.J.P. |
dc.subject.por.fl_str_mv |
Digitaria insularis growing degree days phenology dry matter biology |
topic |
Digitaria insularis growing degree days phenology dry matter biology |
description |
This work was carried out with the objective of evaluating growth and development of sourgrass (Digitaris insularis) based on days or thermal units (growing degree days - GDD). Two independent trials were developed aiming to quantify the species' phenological development and total dry matter accumulation in increasing or decreasing photoperiod conditions. Plants were grown in 4 L plastic pots, filled with commercial substrate, adequately fertilized. In each trial, nine growth evaluations were carried out, with three replicates. Phenological development of sourgrass was correctly fit to time scale in days or GDD, through linear equation of first degree. Sourgrass has slow initial growth, followed by exponential dry matter accumulation, in increasing photoperiod condition. Maximum total dry matter was 75 and 6 g per plant for increasing and decreasing photoperiod conditions, respectively. Thus, phenological development of sourgrass may be predicted by mathematical models based on days or GDD; however, it should be noted that other environmental variables interfere on the species' growth (mass accumulation), especially photoperiod. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-09-01 |
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=S0100-83582014000300003 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582014000300003 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0100-83582014000300003 |
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 |
Sociedade Brasileira da Ciência das Plantas Daninhas |
publisher.none.fl_str_mv |
Sociedade Brasileira da Ciência das Plantas Daninhas |
dc.source.none.fl_str_mv |
Planta Daninha v.32 n.3 2014 reponame:Planta daninha (Online) instname:Sociedade Brasileira da Ciência das Plantas Daninhas (SBCPD) instacron:SBCPD |
instname_str |
Sociedade Brasileira da Ciência das Plantas Daninhas (SBCPD) |
instacron_str |
SBCPD |
institution |
SBCPD |
reponame_str |
Planta daninha (Online) |
collection |
Planta daninha (Online) |
repository.name.fl_str_mv |
Planta daninha (Online) - Sociedade Brasileira da Ciência das Plantas Daninhas (SBCPD) |
repository.mail.fl_str_mv |
||rpdaninha@gmail.com |
_version_ |
1752126494345265152 |