<b>Comparison of methodologies for degree-day estimation using numerical methods</b> - doi: 10.4025/actasciagron.v33i3.6018

  • Adilson Pacheco de Souza UNESP - Faculdade de Ciências Agronômicas
  • Clóvis Manoel Carvalho Ramos UNESP - Faculdade de Ciências Agronômicas
  • Adriano Dawison de Lima UNESP - Faculdade de Ciências Agronômicas
  • Helenice de Oliveira Florentino UNESP - Instituto de Biociências
  • João Francisco Escobedo UNESP - Faculdade de Ciências Agronômicas
Palavras-chave: vegetative development, heat units, numerical integration methods, sugar cane

Resumo

The development of projects related to the yield of various crops has been greatly enhanced with the incorporation of mathematical models as well as essential and more consistent equations which enable a prediction and greater approximation to their actual behavior, thus reducing error in estimate. Among the operations requiring further investigation are those related to crop growth, characterized by the ideal temperature for addition of dry matter. Due to the wide use of mathematical methods for representing, analyzing and attaining degree-day estimation as well as the great importance of sugarcane in the Brazilian economy, we carried out an evaluation of the mathematical models and numerical integration methods commonly used for estimating the availability of degrees-day for this crop in the region of Botucatu, in São Paulo State, Brazil. Integration models with discretization every 6 hours have shown satisfactory results in degree-day estimation. Conventional methodologies have shown satisfactory results when the estimation of degrees-day was based on the time-temperature curve for each day and for groups of 3, 7, 15 and 30 days. Through numerical integration method, the region of Botucatu showed a annual thermal availability average from 1,070.6 degrees-day for the sugarcane.

Downloads

Não há dados estatísticos.

Biografia do Autor

Adilson Pacheco de Souza, UNESP - Faculdade de Ciências Agronômicas
Departamento de Ciências Ambientais Faculdade de Ciências Agronômicas Area de Agrometeorologia e Agricultura Orgânica http://buscatextual.cnpq.br/buscatextual/visualizacv.jsp?id=T416437
Clóvis Manoel Carvalho Ramos, UNESP - Faculdade de Ciências Agronômicas
Departamento de Engenharia Rural, Faculdade de Ciências Agronômicas, UNESP, Botucatu - SP.
Adriano Dawison de Lima, UNESP - Faculdade de Ciências Agronômicas
Departamento de Engenharia Rural, Faculdade de Ciências Agronômicas, UNESP, Botucatu - SP.
Helenice de Oliveira Florentino, UNESP - Instituto de Biociências
Departamento de Bioestatística, Instituto de Biociências, UNESP, Botucatu - SP.
João Francisco Escobedo, UNESP - Faculdade de Ciências Agronômicas
Departamento de Recursos Naturais e Ambientais, Faculdade de Ciências Agronômicas, UNESP, Botucatu - SP.
Publicado
2011-04-11
Como Citar
Souza, A. P. de, Ramos, C. M. C., Lima, A. D. de, Florentino, H. de O., & Escobedo, J. F. (2011). <b>Comparison of methodologies for degree-day estimation using numerical methods</b&gt; - doi: 10.4025/actasciagron.v33i3.6018. Acta Scientiarum. Agronomy, 33(3), 391-400. https://doi.org/10.4025/actasciagron.v33i3.6018
Seção
Engenharia Agrícola

 

2.0
2019CiteScore
 
 
60th percentile
Powered by  Scopus

 

2.0
2019CiteScore
 
 
60th percentile
Powered by  Scopus