Modelos agro-meteorológicos na estimativa da produtividade da cultura da soja na região de Ponta Grossa, Estado do Paraná - doi: 10.4025/actasciagron.v33i1.5062

Marla Alessandra Araujo; Jorge Luiz Moretti de Souza; Rodrigo Yoiti Tsukahara

doi:10.4025/actasciagron.v33i1.5062

Agrometeorological models in the soybean crop productivity estimate, in Ponta Grossa region, State of Paraná, Brazil - doi: 10.4025/actasciagron.v33i1.5062

Marla Alessandra Araujo UFPR
Jorge Luiz Moretti de Souza Universidade Federal do Paraná
Rodrigo Yoiti Tsukahara 3Fundação ABC para Assistência e Divulgação Técnica Agropecuária

DOI: https://doi.org/10.4025/actasciagron.v33i1.5062

Keywords: crops planning, Glycine max, water balance

Abstract

The objective of this study was to evaluate the performance of simplified and agrometeorological models in the soybean crop productivity estimate, looking for crop season prediction and planning, in the Ponta Grossa region, Paraná State, Brazil. The soil of the studied region is classified as Typic Hapludox and the climate as Cfb. The soybean crop productivity (11 seasons) and climate data were provided by the ABC Foundation and SIMEPAR, respectively. The reference evapotranspiration was estimated by the Penman-Monteith method and the daily water balances were determined using a program especially developed for this purpose. After innumerable analyses, the best results were obtained when the following were considered: (a) the temporal distribution of real productivity of soybean crop seasons in two groups, which were called ‘Year 1’ and ‘Year 2’, according to the experimental crop rotation (b) the fit of model coefficient and factors to multiple regression analyses. The Stewart et al. (1976) and Jensen (1968) models provided the best productivity estimates (R² > 0.73).

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Author Biographies

Marla Alessandra Araujo, UFPR

Agrônoma; Pós-Graduanda em Ciência dos Solos

Jorge Luiz Moretti de Souza, Universidade Federal do Paraná

Engenheiro Agrícola, Doutor e Agronomia: Área de Concentração em Irrigação e Drenagem, Professor Adjunto do Departamento de Solos e Engenharia Agrícola (DSEA)/SCA/UFPR. Ministra as disciplinas: Programação de Dados Ambientais; Eletrificação Rural; Hidráulica e Hidrologia.

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Published

2011-02-16

How to Cite

Araujo, M. A., Souza, J. L. M. de, & Tsukahara, R. Y. (2011). Agrometeorological models in the soybean crop productivity estimate, in Ponta Grossa region, State of Paraná, Brazil - doi: 10.4025/actasciagron.v33i1.5062. Acta Scientiarum. Agronomy, 33(1), 23-31. https://doi.org/10.4025/actasciagron.v33i1.5062

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Issue

Vol 33 No 1 (2011)

Section

Agricultural Engineering

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