Penalização da produtividade da cultura do milho imposta pelo modelo CERES-Maize - DOI: 10.4025/actasciagron.v27i1.2125

Paulo Sergio Lourenço de Freitas; Everardo Chartuni Mantovani; Gilberto Chohaku Sediyama; Luiz Cláudio Costa

doi:10.4025/actasciagron.v27i1.2125

Penalization model of maize productivity by CERES-Maize

Authors

Paulo Sergio Lourenço de Freitas UEM - Maringá Author
Everardo Chartuni Mantovani UFV Author
Gilberto Chohaku Sediyama UFV Author
Luiz Cláudio Costa UFV Author

DOI:

https://doi.org/10.4025/actasciagron.v27i1.2125

Keywords:

CERES-Maize, evapotranspiração, evaporação, irrigação, lâmina de água

Abstract

The present work analyzes penalization imposed by the CERES-Maize model in the corn yield variables. The direct soil water evaporation and the crop evapotranspiration were also studied according to CERES-Maize model and SISDA 3.0, using crop coefficient to calculate evapotranspiration and penalization of soil water under field capacity. To compare simulated data with experimental results, a cornfield experiment was carried out with the following treatments: five irrigation water depths and two coefficients of uniformity of water application. Based on simulations and on experimental conditions, it was concluded that the penalization imposed by the model influenced severely the corn crop yield, for treatments with soil water deficit. The soil water evaporation and the crop transpiration calculated by the CERES-Maize model overestimated the rate of the reference evapotranspiration calculated by Penman-Monteith equation. The corn crop evapotranspiration calculated by CERES-Maize model overestimated the real crop water needs.

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Author Biography

Paulo Sergio Lourenço de Freitas, UEM - Maringá

Atualmente é Professor Adjunto da Universidade Estadual de Maringá. Tem experiência na área de Engenharia Agrícola , com ênfase em Engenharia de Ãgua e Solo. Atuando principalmente nos seguintes temas: Unformidade de irrigação, evaporação da água do solo, resíduos de cultura, CERES-Maize, Modelagem. Currículo Lattes

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PDF (Portuguese)

Published

2008-04-11

Issue

Vol. 27 No. 1 (2005)

Section

Agricultural Engineering

License

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I Declare that current article is original and has not been submitted for publication, in part or in whole, to any other national or international journal.

The copyrights belong exclusively to the authors. Published content is licensed under Creative Commons Attribution 4.0 (CC BY 4.0) guidelines, which allows sharing (copy and distribution of the material in any medium or format) and adaptation (remix, transform, and build upon the material) for any purpose, even commercially, under the terms of attribution.

How to Cite

Freitas, P. S. L. de, Mantovani, E. C., Sediyama, G. C., & Costa, L. C. (2008). Penalization model of maize productivity by CERES-Maize. Acta Scientiarum. Agronomy, 27(1), 97-105. https://doi.org/10.4025/actasciagron.v27i1.2125