Influence of repeated applications of glyphosate on its persistence and soil bioactivity

Authors

  • Mara Mercedes de Andréa
  • Terezinha Bonanho Peres
  • Luiz Carlos Luchini
  • Sheila Bazarin
  • Solange Papini
  • Marcus Barifouse Matallo
  • Vera Lúcia Tedeschi Savoy

DOI:

https://doi.org/10.1590/S1678-3921.pab2003.v38.6708

Keywords:

pesticide residues, mineralization, dehydrogenases, soil treatment

Abstract

Pesticide degradation studies are essential to evaluate its impact in the environment and on non-target organisms. The effect of repeated soil applications of the herbicide glyphosate on its dissipation and on soil microorganisms was studied by radiometric and microbial techniques. Results indicated fast dissipation of the [14C]-glyphosate or [14C]metabolites extractable residues (half-life of 0.92±0.29 month), but increasing half-lives of total mineralization ranging from 2.2 to 3.4 months as the number of applications increased from 1 to 4. No significant correlation was found between 14CO2 production and dehydrogenase activity.

Downloads

Published

2003-11-01

How to Cite

Andréa, M. M. de, Peres, T. B., Luchini, L. C., Bazarin, S., Papini, S., Matallo, M. B., & Savoy, V. L. T. (2003). Influence of repeated applications of glyphosate on its persistence and soil bioactivity. Pesquisa Agropecuaria Brasileira, 38(11), 1329–1335. https://doi.org/10.1590/S1678-3921.pab2003.v38.6708

Issue

Section

SOIL SCIENCE