Relationship between the occurrence of the rice water weevil and water depth in flooded rice crop

Authors

  • Germano Tessmer Büttow Universidade Federal de Pelotas, Departamento de Fitossanidade, Avenida Eliseu Maciel, s/no, Campus Universitário Capão do Leão, CEP 96010-900 Pelotas, RS.
  • Juliano de Bastos Pazini Universidade Federal de Pelotas, Departamento de Fitossanidade, Avenida Eliseu Maciel, s/no, Campus Universitário Capão do Leão, CEP 96010-900 Pelotas, RS.
  • Enio Júnior Seidel Universidade Federal de Santa Maria, Departamento de Estatística, Avenida Roraima, no 1.000, Cidade Universitária, Camobi, CEP 97105-900 Santa Maria, RS.
  • Fernando Felisberto da Silva Universidade Federal do Pampa, Rua Luiz Joaquim de Sá Britto, s/no, Promorar, CEP 97650-000 Itaqui, RS.
  • Anderson Dionei Grützmacher Universidade Federal de Pelotas, Departamento de Fitossanidade, Avenida Eliseu Maciel, s/no, Campus Universitário Capão do Leão, CEP 96010-900 Pelotas, RS.
  • José Francisco da Silva Martins Embrapa Clima Temperado, Rodovia BR-392, Km 78, 9º Distrito, Monte Bonito, Caixa Postal 403, CEP 96010-971 Pelotas, RS.

DOI:

https://doi.org/10.1590/S1678-3921.pab2017.v52.23117

Keywords:

Oryza sativa, Oryzophagus oryzae, geostatistics, spatial distribution

Abstract

The objective of this work was to assess the relationship between the depth of irrigation water and larval infestation by Oryzophagus oryzae in flooded rice crop. Water depth and larval infestation were evaluated in the upper levee, in between levees, and in the lower levee. The data were subjected to the descriptive statistical and geostatistical analyses. The highest larval infestation occurs in field areas with greater water depth, which is typical of the lower levee. The spatial distribution of O. oryzae larvae is of the aggregate type and depends on the greater irrigation water depth.

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Published

2017-07-20

How to Cite

Büttow, G. T., Pazini, J. de B., Seidel, E. J., da Silva, F. F., Grützmacher, A. D., & Martins, J. F. da S. (2017). Relationship between the occurrence of the rice water weevil and water depth in flooded rice crop. Pesquisa Agropecuaria Brasileira, 52(7), 557–560. https://doi.org/10.1590/S1678-3921.pab2017.v52.23117

Issue

v.52, n.7, jul. 2017

Section

SCIENTIFIC NOTES