Effects of earthworm Pontoscolex corethrurus on distribution of acaricida dicofol in a Podzolic soil

Authors

  • Tomaz Langenbach
  • Márcia Verônica de Souza Inácio
  • Adriana Maria de Aquino
  • Beate Brunninger

DOI:

https://doi.org/10.1590/S1678-3921.pab2002.v37.6515

Keywords:

pesticides, organochlorides, soil fauna, radioactivity, soil transport processes, soil pollution

Abstract

The aim of this work was to study the influence of earthworm on pesticides distribution in a Podzolic soil. The experimental model used was a microcosm filled with sieved soil to a final density of 1.25 g cm-3. In microcosms with or without Pontoscolex corethurus 14C-dicofol was applied, and after a period of 52 days strong rain simulation was performed. In the layer of 0-1 cm 75% of the radioactivity in the soil without earthworms were recovered, and in the soil with earthworms the recovery was 9% inferior. In the deepest layers the values of the radioactivity were below 20% and the differences among the treatments did not surpass 2%. This earthworm species of large occurrence in Brazil showed no important influence on the distribution of the pesticide in soil.

Published

2002-11-01

How to Cite

Langenbach, T., Inácio, M. V. de S., de Aquino, A. M., & Brunninger, B. (2002). Effects of earthworm <i>Pontoscolex corethrurus</i> on distribution of acaricida dicofol in a Podzolic soil. Pesquisa Agropecuaria Brasileira, 37(11), 1663–1668. https://doi.org/10.1590/S1678-3921.pab2002.v37.6515

Issue

Section

SCIENTIFIC NOTES