AGROMETEOROLOGICAL MODELS TO ESTIMATE MAIZE YIELD AS A FUNCTION OF WATER AVAILABILITY IN THE STATE OF RIO GRANDE DO SUL
Autor(a) principal: | |
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Data de Publicação: | 1995 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Pesquisa Agropecuária Gaúcha (Online) |
Texto Completo: | http://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/568 |
Resumo: | Water deficit is the main factor responsible for reductions in maize production at Rio Grande do Sul State,Brazil. Therefore, quantifying the relationship between water availability and grain yield will give to us important informationsto help improve production in thc state. In this study, we looked at the relationships between grain yield and water availabilityusing a multiple regression models and Jensen model, which relates productivity to relative water use (ETr/ETm) at differentstages during the crop cycic. The data on grain yield and phenology were obtained from experiments conducted at Taquari,São Borja, Santo Augusto and Veranópolis experimental stations, during the periods from 1975/76 to 1989/90. The analisyswas performed for two maturity groups separately (early and normal), with a total of 89 data points for each of the groups.Based on the available data, both models were good estimators of com yield. Comparing the models results to the actual data,we notice a strong relationship between the relative yield observed and estimated with correlation coefficient varying from0.893 to 0.946. |
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AGROMETEOROLOGICAL MODELS TO ESTIMATE MAIZE YIELD AS A FUNCTION OF WATER AVAILABILITY IN THE STATE OF RIO GRANDE DO SUL MODELOS AGROMETEOROLÓGICOS PARA ESTIMATIVA DO RENDIMENTO DE MIMO, EM FUNÇÃO DA DISPONIBILIDADE HÍDRICA NO ESTADO DO RIO GRANDE DO SULagrometeorological models, grain yield, water deficit, maize.modelos agrometeorológicos, rendimento de grãos, déficit hídrico, milho.Water deficit is the main factor responsible for reductions in maize production at Rio Grande do Sul State,Brazil. Therefore, quantifying the relationship between water availability and grain yield will give to us important informationsto help improve production in thc state. In this study, we looked at the relationships between grain yield and water availabilityusing a multiple regression models and Jensen model, which relates productivity to relative water use (ETr/ETm) at differentstages during the crop cycic. The data on grain yield and phenology were obtained from experiments conducted at Taquari,São Borja, Santo Augusto and Veranópolis experimental stations, during the periods from 1975/76 to 1989/90. The analisyswas performed for two maturity groups separately (early and normal), with a total of 89 data points for each of the groups.Based on the available data, both models were good estimators of com yield. Comparing the models results to the actual data,we notice a strong relationship between the relative yield observed and estimated with correlation coefficient varying from0.893 to 0.946.O déficit hídrico é o fator que mais tem contribuído para as reduções nas safras de milho, no Estado do RioGrande do Sul. Neste sentido, a quantificação das relações entre água e rendimento de grãos pode fornecer informaçõesimportantes, particularmente para o estabelecimento de modelos de relação planta-clima. Neste trabalho, foram ajustados evalidados modelos de regressão linear múltipla e de Jensen, relacionando o rendimento de grãos de milho com o consumorelativo de água (ETr/ETm) em diferentes períodos do ciclo da cultura. Os dados de rendimento e fenologia foram obtidosem experimentos conduzidos em Taquari, São Borja, Santo Augusto e Veranópolis, no período de 1975/76 a 1989/90. Asanálises foram feitas para os grupos de maturação precoce e normal, num total de 89 dados para cada grupo. Os dois modelostestados apresentaram bom desempenho na estimativa do rendimento. Na validação dos modelos, verificou-se elevada asso-ciação entre o rendimento relativo observado e previsto pelos modelos, com coeficientes de correlação variando entre 0,893e 0,946.Departamento de Diagnóstico e Pesquisa Agropecuária. Secretaria de Agricultura, Pecuária e Desenvolvimento Rural1995-09-15info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/568Pesquisa Agropecuária Gaúcha; Vol 1 No 2 (1995): PESQ. AGROP. GAÚCHA; 225-241Pesquisa Agropecuária Gaúcha; v. 1 n. 2 (1995): PESQ. AGROP. GAÚCHA; 225-2412595-76860104-9070reponame:Pesquisa Agropecuária Gaúcha (Online)instname:Secretaria de Agricultura, Pecuária e Desenvolvimento Rural do Rio Grande do Sulinstacron:SEAPDRporhttp://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/568/521MATZENAUER, RONALDOBERGAMASCHI, HOMEROBERALTO, MOACIR ANTONIORIBOLDI, JOÃOinfo:eu-repo/semantics/openAccess2024-04-22T12:01:02Zoai:ojs.revistapag.agricultura.rs.gov.br:article/568Revistahttp://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapagPUBhttp://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/oaipag@agricultura.rs.gov.br||2595-76860104-9070opendoar:2024-04-22T12:01:02Pesquisa Agropecuária Gaúcha (Online) - Secretaria de Agricultura, Pecuária e Desenvolvimento Rural do Rio Grande do Sulfalse |
dc.title.none.fl_str_mv |
AGROMETEOROLOGICAL MODELS TO ESTIMATE MAIZE YIELD AS A FUNCTION OF WATER AVAILABILITY IN THE STATE OF RIO GRANDE DO SUL MODELOS AGROMETEOROLÓGICOS PARA ESTIMATIVA DO RENDIMENTO DE MIMO, EM FUNÇÃO DA DISPONIBILIDADE HÍDRICA NO ESTADO DO RIO GRANDE DO SUL |
title |
AGROMETEOROLOGICAL MODELS TO ESTIMATE MAIZE YIELD AS A FUNCTION OF WATER AVAILABILITY IN THE STATE OF RIO GRANDE DO SUL |
spellingShingle |
AGROMETEOROLOGICAL MODELS TO ESTIMATE MAIZE YIELD AS A FUNCTION OF WATER AVAILABILITY IN THE STATE OF RIO GRANDE DO SUL MATZENAUER, RONALDO agrometeorological models, grain yield, water deficit, maize. modelos agrometeorológicos, rendimento de grãos, déficit hídrico, milho. |
title_short |
AGROMETEOROLOGICAL MODELS TO ESTIMATE MAIZE YIELD AS A FUNCTION OF WATER AVAILABILITY IN THE STATE OF RIO GRANDE DO SUL |
title_full |
AGROMETEOROLOGICAL MODELS TO ESTIMATE MAIZE YIELD AS A FUNCTION OF WATER AVAILABILITY IN THE STATE OF RIO GRANDE DO SUL |
title_fullStr |
AGROMETEOROLOGICAL MODELS TO ESTIMATE MAIZE YIELD AS A FUNCTION OF WATER AVAILABILITY IN THE STATE OF RIO GRANDE DO SUL |
title_full_unstemmed |
AGROMETEOROLOGICAL MODELS TO ESTIMATE MAIZE YIELD AS A FUNCTION OF WATER AVAILABILITY IN THE STATE OF RIO GRANDE DO SUL |
title_sort |
AGROMETEOROLOGICAL MODELS TO ESTIMATE MAIZE YIELD AS A FUNCTION OF WATER AVAILABILITY IN THE STATE OF RIO GRANDE DO SUL |
author |
MATZENAUER, RONALDO |
author_facet |
MATZENAUER, RONALDO BERGAMASCHI, HOMERO BERALTO, MOACIR ANTONIO RIBOLDI, JOÃO |
author_role |
author |
author2 |
BERGAMASCHI, HOMERO BERALTO, MOACIR ANTONIO RIBOLDI, JOÃO |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
MATZENAUER, RONALDO BERGAMASCHI, HOMERO BERALTO, MOACIR ANTONIO RIBOLDI, JOÃO |
dc.subject.por.fl_str_mv |
agrometeorological models, grain yield, water deficit, maize. modelos agrometeorológicos, rendimento de grãos, déficit hídrico, milho. |
topic |
agrometeorological models, grain yield, water deficit, maize. modelos agrometeorológicos, rendimento de grãos, déficit hídrico, milho. |
description |
Water deficit is the main factor responsible for reductions in maize production at Rio Grande do Sul State,Brazil. Therefore, quantifying the relationship between water availability and grain yield will give to us important informationsto help improve production in thc state. In this study, we looked at the relationships between grain yield and water availabilityusing a multiple regression models and Jensen model, which relates productivity to relative water use (ETr/ETm) at differentstages during the crop cycic. The data on grain yield and phenology were obtained from experiments conducted at Taquari,São Borja, Santo Augusto and Veranópolis experimental stations, during the periods from 1975/76 to 1989/90. The analisyswas performed for two maturity groups separately (early and normal), with a total of 89 data points for each of the groups.Based on the available data, both models were good estimators of com yield. Comparing the models results to the actual data,we notice a strong relationship between the relative yield observed and estimated with correlation coefficient varying from0.893 to 0.946. |
publishDate |
1995 |
dc.date.none.fl_str_mv |
1995-09-15 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/568 |
url |
http://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/568 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
http://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/568/521 |
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 |
Departamento de Diagnóstico e Pesquisa Agropecuária. Secretaria de Agricultura, Pecuária e Desenvolvimento Rural |
publisher.none.fl_str_mv |
Departamento de Diagnóstico e Pesquisa Agropecuária. Secretaria de Agricultura, Pecuária e Desenvolvimento Rural |
dc.source.none.fl_str_mv |
Pesquisa Agropecuária Gaúcha; Vol 1 No 2 (1995): PESQ. AGROP. GAÚCHA; 225-241 Pesquisa Agropecuária Gaúcha; v. 1 n. 2 (1995): PESQ. AGROP. GAÚCHA; 225-241 2595-7686 0104-9070 reponame:Pesquisa Agropecuária Gaúcha (Online) instname:Secretaria de Agricultura, Pecuária e Desenvolvimento Rural do Rio Grande do Sul instacron:SEAPDR |
instname_str |
Secretaria de Agricultura, Pecuária e Desenvolvimento Rural do Rio Grande do Sul |
instacron_str |
SEAPDR |
institution |
SEAPDR |
reponame_str |
Pesquisa Agropecuária Gaúcha (Online) |
collection |
Pesquisa Agropecuária Gaúcha (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Gaúcha (Online) - Secretaria de Agricultura, Pecuária e Desenvolvimento Rural do Rio Grande do Sul |
repository.mail.fl_str_mv |
pag@agricultura.rs.gov.br|| |
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1797068773801328640 |