DEVELOPMENT OF Sitophilus zeamais IN MAIZE GRAINS STORED UNDER LIGHTING SYSTEMS

Authors

  • Rafael Eduardo Nascimento Barcelos Universidade Estadual do Oeste do Paraná - UNIOESTE
  • Silvia Renata Machado Coelho Universidade Estadual do Oeste do Paraná - UNIOESTE
  • Adriano Divino Lima Afonso Universidade Estadual do Oeste do Paraná - UNIOESTE
  • Eduardo Godoy de Souza Universidade Estadual do Oeste do Paraná - UNIOESTE
  • Marcia Regina Siqueira Konopatzki Universidade Estadual do Oeste do Paraná - UNIOESTE

Keywords:

Wevill. Lamps. Storage. Zea mays. Stored products.

Abstract

The aim of this study is to evaluate the Sitophilus zeamais development in maize seeds, under four lightning systems and to find a mathematical model that describes the growth of this insect under the ambient conditions. Four wood cabinets were built, one of them was a natural light and the other ones as it follow: mixed light, sodium steam light and anti-bugs incandescent light. Inside each chamber, there were 18 recipients containing approximately 250g of seeds infested with 25 weevils. After the chambers building, a timer system was built, so the lamps would stay turned on always on the same time, from 6:00 p.m. to 6:00 a.m. to next day, consequently kept on for 12 hours. Every 21 days after the construction of the experiment 3 recipients from each chamber were taken off and weevils there were counted using the Belese funnel, and the seeds moisture was measured. It was not observed any influence on the bug development, who presented the maximum level of growing 84 days after the storage at all lightning systems tested. The humidity level kept constant itself until the 84th day and it had reduced significantly, indicating environmental changes during the procedure. The growth of S. zeamais can be described by a polynomial model.

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Author Biographies

Rafael Eduardo Nascimento Barcelos, Universidade Estadual do Oeste do Paraná - UNIOESTE

Graduando em Engenharia Agricola - CCET/UNIOESTE

Silvia Renata Machado Coelho, Universidade Estadual do Oeste do Paraná - UNIOESTE

Professor dos Cursos de Graduação e Pós Graduação em Engenharia Agricola PGEAGRI - CCET- UNIOESTE

Adriano Divino Lima Afonso, Universidade Estadual do Oeste do Paraná - UNIOESTE

Professor do Curso de Graduação em Engenharia Agricola - CCET/UNIOESTE

Eduardo Godoy de Souza, Universidade Estadual do Oeste do Paraná - UNIOESTE

Professor dos Cursos de Graduação e Pós Graduação em Engenharia Agricola-PGEAGRI - CCET/UNIOESTE

Marcia Regina Siqueira Konopatzki, Universidade Estadual do Oeste do Paraná - UNIOESTE

Doutorando em Engenharia Agricola PGEAGRI - CCET/UNIOESTE

Published

01-11-2011

Issue

Section

Agricultural Engineering