Persistence of metholachlor in sandy clay loam soils under soybean crop

Authors

  • Hélio Garcia Blanco
  • Marcus B. Matallo
  • Domingos de Azevedo Oliveira
  • Flávio M. G. Blanco

DOI:

https://doi.org/10.1590/S1678-3921.pab1989.v24.16319

Keywords:

bioactivity, herbicides, Glycine max, bioassay

Abstract

The persistence of the metholachlor herbicide in sandy-clay-loam soils under soybean (Glycine max (L.) Merrill) crop was investigated during three years in three localities of São Paulo state, Brazil. The presence of metholachlor was detected by sorghum bioassay conducted under phytotron conditions for ten weeks after the application. The results showed that metholachlor (1.80 to 3.24 kg/ha of a.i) was not present at phytotoxic levels in the soil samples (0 cm to 10 cm depth) taken from treated plots, two weeks after pre-emergence, for all the three years.

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How to Cite

Blanco, H. G., Matallo, M. B., Oliveira, D. de A., & Blanco, F. M. G. (2014). Persistence of metholachlor in sandy clay loam soils under soybean crop. Pesquisa Agropecuaria Brasileira, 24(9), 1169–1174. https://doi.org/10.1590/S1678-3921.pab1989.v24.16319

Issue

v.24, n.9, set. 1989

Section

PLANT PHYSIOLOGY