Expolinear model on soybean growth in Argentina and Brazil
Autor(a) principal: | |
---|---|
Data de Publicação: | 2010 |
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=S0103-84782010000500002 |
Resumo: | Predicting crop growth and yield with precision are one of the main concerns of the agricultural science. For these purpose mechanistic models of crop growth have been developed and tested worldwide. The feasibility of an expolinear model for crop growth was evaluated on predicting growth modification on soybean (Glycine max L. Merrill) of determined and undetermined growth cultivars, submitted to water restrictions imposed on different phenological stages. An experiment was carried out in Azul/Argentina and in Viçosa/Brazil during the growing seasons (1997/1998, 1998/1999 and 2002/2003). The expolinear model was adjusted to the dry-matter data obtained from each treatment. The model showed sensibility of Rm (maximum relative growth rate of the culture - g g-1 day-1) to variation in air temperature; of Cm (maximum growth rate of the culture - g m-2 day-1) to solar radiation and of Tb (lost time -day) to water stress. Cm values were higher without water restriction presenting, in both countries, a direct correlation with solar radiation. Without water restrictions, Rm values were lower when the average air temperature during the cycle was lower. It was observed that under water stress the culture had a bias to present higher Rm values. Tb was lower in the irrigated treatments than in those with water deficits. The analysis of the outputs clearly shows the feasibility of the expolinear model to explain the differential growth rates of soybean as a consequence of climatic conditions. |
id |
UFSM-2_0aeb561a6e8eae2dae1bd618dd238ee3 |
---|---|
oai_identifier_str |
oai:scielo:S0103-84782010000500002 |
network_acronym_str |
UFSM-2 |
network_name_str |
Ciência rural (Online) |
repository_id_str |
|
spelling |
Expolinear model on soybean growth in Argentina and Brazilwater deficitsolar radiationtemperaturephenological phasePredicting crop growth and yield with precision are one of the main concerns of the agricultural science. For these purpose mechanistic models of crop growth have been developed and tested worldwide. The feasibility of an expolinear model for crop growth was evaluated on predicting growth modification on soybean (Glycine max L. Merrill) of determined and undetermined growth cultivars, submitted to water restrictions imposed on different phenological stages. An experiment was carried out in Azul/Argentina and in Viçosa/Brazil during the growing seasons (1997/1998, 1998/1999 and 2002/2003). The expolinear model was adjusted to the dry-matter data obtained from each treatment. The model showed sensibility of Rm (maximum relative growth rate of the culture - g g-1 day-1) to variation in air temperature; of Cm (maximum growth rate of the culture - g m-2 day-1) to solar radiation and of Tb (lost time -day) to water stress. Cm values were higher without water restriction presenting, in both countries, a direct correlation with solar radiation. Without water restrictions, Rm values were lower when the average air temperature during the cycle was lower. It was observed that under water stress the culture had a bias to present higher Rm values. Tb was lower in the irrigated treatments than in those with water deficits. The analysis of the outputs clearly shows the feasibility of the expolinear model to explain the differential growth rates of soybean as a consequence of climatic conditions.Universidade Federal de Santa Maria2010-05-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782010000500002Ciência Rural v.40 n.5 2010reponame:Ciência Ruralinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSM10.1590/S0103-84782010000500002info:eu-repo/semantics/openAccessConfalone,Adriana ElisabetBernardes,Marcos SilveiraCosta,Luiz ClaudioRighi,Ciro AbbudDourado Neto,DurvalMartin,Thomas NewtonManfron,Paulo AugustoPereira,Carlos Rodrigueseng2010-07-15T00:00:00ZRevista |
dc.title.none.fl_str_mv |
Expolinear model on soybean growth in Argentina and Brazil |
title |
Expolinear model on soybean growth in Argentina and Brazil |
spellingShingle |
Expolinear model on soybean growth in Argentina and Brazil Confalone,Adriana Elisabet water deficit solar radiation temperature phenological phase |
title_short |
Expolinear model on soybean growth in Argentina and Brazil |
title_full |
Expolinear model on soybean growth in Argentina and Brazil |
title_fullStr |
Expolinear model on soybean growth in Argentina and Brazil |
title_full_unstemmed |
Expolinear model on soybean growth in Argentina and Brazil |
title_sort |
Expolinear model on soybean growth in Argentina and Brazil |
author |
Confalone,Adriana Elisabet |
author_facet |
Confalone,Adriana Elisabet Bernardes,Marcos Silveira Costa,Luiz Claudio Righi,Ciro Abbud Dourado Neto,Durval Martin,Thomas Newton Manfron,Paulo Augusto Pereira,Carlos Rodrigues |
author_role |
author |
author2 |
Bernardes,Marcos Silveira Costa,Luiz Claudio Righi,Ciro Abbud Dourado Neto,Durval Martin,Thomas Newton Manfron,Paulo Augusto Pereira,Carlos Rodrigues |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Confalone,Adriana Elisabet Bernardes,Marcos Silveira Costa,Luiz Claudio Righi,Ciro Abbud Dourado Neto,Durval Martin,Thomas Newton Manfron,Paulo Augusto Pereira,Carlos Rodrigues |
dc.subject.por.fl_str_mv |
water deficit solar radiation temperature phenological phase |
topic |
water deficit solar radiation temperature phenological phase |
description |
Predicting crop growth and yield with precision are one of the main concerns of the agricultural science. For these purpose mechanistic models of crop growth have been developed and tested worldwide. The feasibility of an expolinear model for crop growth was evaluated on predicting growth modification on soybean (Glycine max L. Merrill) of determined and undetermined growth cultivars, submitted to water restrictions imposed on different phenological stages. An experiment was carried out in Azul/Argentina and in Viçosa/Brazil during the growing seasons (1997/1998, 1998/1999 and 2002/2003). The expolinear model was adjusted to the dry-matter data obtained from each treatment. The model showed sensibility of Rm (maximum relative growth rate of the culture - g g-1 day-1) to variation in air temperature; of Cm (maximum growth rate of the culture - g m-2 day-1) to solar radiation and of Tb (lost time -day) to water stress. Cm values were higher without water restriction presenting, in both countries, a direct correlation with solar radiation. Without water restrictions, Rm values were lower when the average air temperature during the cycle was lower. It was observed that under water stress the culture had a bias to present higher Rm values. Tb was lower in the irrigated treatments than in those with water deficits. The analysis of the outputs clearly shows the feasibility of the expolinear model to explain the differential growth rates of soybean as a consequence of climatic conditions. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-05-01 |
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=S0103-84782010000500002 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782010000500002 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0103-84782010000500002 |
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.40 n.5 2010 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_ |
1749140535584489472 |