Losses in weight of cowpea seeds infested by weevil

Authors

  • Francisco José de Oliveira
  • José Higino Ribeiro dos Santos
  • José Ferreira Alves
  • José Braga Paiva
  • Marcos Vinicius Assunção

DOI:

https://doi.org/10.1590/S1678-3921.pab1984.v19.15302

Keywords:

Callosobruchus maculatus, weevil, entomology, seed infestation, cultivars, Vigna unguiculata (L.) Walp

Abstract

This investigation was carried out to find a rapid procedure that permits to relate the indexes of infestation by the weevil Collosobruchus maculatus F. (1775) with the percentage of losses of seed weight of cowpea (Vigna unguiculata (L.) Walp). As such, the seeds of the varieties CE-1, CE-2, CE-25, CE-31 and CE-218 were infested with adults of the above mentioned insect pest. The results led to the conclusion that number of tipical holes made by C. maculatus in the samples of 100 seeds of cowpea obtained from the damaged lots could be related to the percentage Posses of seed weight by means of the equation Y = 0.2222 + 0.5042X within the limits of 6.08 to 28.10 holes.

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How to Cite

Oliveira, F. J. de, Santos, J. H. R. dos, Alves, J. F., Paiva, J. B., & Assunção, M. V. (2014). Losses in weight of cowpea seeds infested by weevil. Pesquisa Agropecuaria Brasileira, 19(1), 47–52. https://doi.org/10.1590/S1678-3921.pab1984.v19.15302

Issue

v.19, n.1, jan. 1984

Section

CROP SCIENCE