Simulation of within field variability of corn yield with Ceres-Maize model

Detalhes bibliográficos
Autor(a) principal: Cora, J. E.
Data de Publicação: 1999
Outros Autores: Pierce, F. J., Basso, B., Ritchie, J. T.
Tipo de documento: Artigo de conferência
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.2134/1999.precisionagproc4.c34b
http://hdl.handle.net/11449/32497
Resumo: The CERES-Maize model was used to estimate the spatial variability in corn (Zea mays L.) yield for 1995 and 1996 using data measured on soil profiles located on a 30.5 m grid within a 3.9 ha field in Michigan. The model was calibrated for one grid profile for the 1995 and then used to simulate corn yield for all grid points for the 2 yrs. For the calibration for 1995, the model predicted corn yield within 2%. For 1995, the model predicted yield variability very well (r(2) = 0.85), producing similar yield maps with differences generally within +/- 300 kg ha(-1). For 1996, the model predicted low grain yields (1167 kg ha(-1)) compared with measured (8928 kg ha(-1)) because the model does not account for horizontal water movement within the landscape or water contributions from a water table. Under nonlimiting water conditions, the model performed well (average of 8717 vs. 8948 kg ha(-1)) but under-estimated the measured yield variability.
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spelling Simulation of within field variability of corn yield with Ceres-Maize modelThe CERES-Maize model was used to estimate the spatial variability in corn (Zea mays L.) yield for 1995 and 1996 using data measured on soil profiles located on a 30.5 m grid within a 3.9 ha field in Michigan. The model was calibrated for one grid profile for the 1995 and then used to simulate corn yield for all grid points for the 2 yrs. For the calibration for 1995, the model predicted corn yield within 2%. For 1995, the model predicted yield variability very well (r(2) = 0.85), producing similar yield maps with differences generally within +/- 300 kg ha(-1). For 1996, the model predicted low grain yields (1167 kg ha(-1)) compared with measured (8928 kg ha(-1)) because the model does not account for horizontal water movement within the landscape or water contributions from a water table. Under nonlimiting water conditions, the model performed well (average of 8717 vs. 8948 kg ha(-1)) but under-estimated the measured yield variability.UNESP, São Paulo State Univ, Dept Soil Sci, São Paulo, BrazilUNESP, São Paulo State Univ, Dept Soil Sci, São Paulo, BrazilAmer Soc AgronomyUniversidade Estadual Paulista (Unesp)Cora, J. E.Pierce, F. J.Basso, B.Ritchie, J. T.2014-05-20T15:21:20Z2014-05-20T15:21:20Z1999-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject1309-1319http://dx.doi.org/10.2134/1999.precisionagproc4.c34bProceedings of the Fourth International Conference on Precision Agriculture, Pts A and B. Madison: Amer Soc Agronomy, p. 1309-1319, 1999.http://hdl.handle.net/11449/3249710.2134/1999.precisionagproc4.c34bWOS:000089526200120Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengProceedings of the Fourth International Conference on Precision Agriculture, Pts A and Binfo:eu-repo/semantics/openAccess2024-06-07T14:24:33Zoai:repositorio.unesp.br:11449/32497Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:06:34.194230Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Simulation of within field variability of corn yield with Ceres-Maize model
title Simulation of within field variability of corn yield with Ceres-Maize model
spellingShingle Simulation of within field variability of corn yield with Ceres-Maize model
Cora, J. E.
title_short Simulation of within field variability of corn yield with Ceres-Maize model
title_full Simulation of within field variability of corn yield with Ceres-Maize model
title_fullStr Simulation of within field variability of corn yield with Ceres-Maize model
title_full_unstemmed Simulation of within field variability of corn yield with Ceres-Maize model
title_sort Simulation of within field variability of corn yield with Ceres-Maize model
author Cora, J. E.
author_facet Cora, J. E.
Pierce, F. J.
Basso, B.
Ritchie, J. T.
author_role author
author2 Pierce, F. J.
Basso, B.
Ritchie, J. T.
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Cora, J. E.
Pierce, F. J.
Basso, B.
Ritchie, J. T.
description The CERES-Maize model was used to estimate the spatial variability in corn (Zea mays L.) yield for 1995 and 1996 using data measured on soil profiles located on a 30.5 m grid within a 3.9 ha field in Michigan. The model was calibrated for one grid profile for the 1995 and then used to simulate corn yield for all grid points for the 2 yrs. For the calibration for 1995, the model predicted corn yield within 2%. For 1995, the model predicted yield variability very well (r(2) = 0.85), producing similar yield maps with differences generally within +/- 300 kg ha(-1). For 1996, the model predicted low grain yields (1167 kg ha(-1)) compared with measured (8928 kg ha(-1)) because the model does not account for horizontal water movement within the landscape or water contributions from a water table. Under nonlimiting water conditions, the model performed well (average of 8717 vs. 8948 kg ha(-1)) but under-estimated the measured yield variability.
publishDate 1999
dc.date.none.fl_str_mv 1999-01-01
2014-05-20T15:21:20Z
2014-05-20T15:21:20Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/conferenceObject
format conferenceObject
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.2134/1999.precisionagproc4.c34b
Proceedings of the Fourth International Conference on Precision Agriculture, Pts A and B. Madison: Amer Soc Agronomy, p. 1309-1319, 1999.
http://hdl.handle.net/11449/32497
10.2134/1999.precisionagproc4.c34b
WOS:000089526200120
url http://dx.doi.org/10.2134/1999.precisionagproc4.c34b
http://hdl.handle.net/11449/32497
identifier_str_mv Proceedings of the Fourth International Conference on Precision Agriculture, Pts A and B. Madison: Amer Soc Agronomy, p. 1309-1319, 1999.
10.2134/1999.precisionagproc4.c34b
WOS:000089526200120
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Proceedings of the Fourth International Conference on Precision Agriculture, Pts A and B
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 1309-1319
dc.publisher.none.fl_str_mv Amer Soc Agronomy
publisher.none.fl_str_mv Amer Soc Agronomy
dc.source.none.fl_str_mv Web of Science
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1808128756543389696

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