The effects of agrochemicals on survival and respiratory actvity of Rhizobium leguminosarum bv. Phaseoli> and Bradyrhizobium japonicum.

Authors

  • Sonia de Barros Ostiz
  • Maria Raphaela Musumeci
  • Siu Mui Tsai

DOI:

https://doi.org/10.1590/S1678-3921.pab1989.v24.15863

Keywords:

fungicides, agrochemicals, herbicides.

Abstract

The effects of the fungicides pentachloronitrobenzene, metalaxil/mancozeb and the herbicide trifluralin on the growth of strains of Bradyrhizobium japonicum (29W and SEMIA 587), and Rhizobium leguminosarum bv. phaseoli (C-05 and C-05 II), were studied in agar medium. Strain SEMIA 587 of B. japonicum was more susceptible to these agrochemicals, and strain C-05 II of R. leguminosarum was the most resistant, although it had been susceptible to metalaxil/mancozeb. The respiratory activity, measured by radiorespirometry revealed that the mutant strain of R. leguminosarum, (C-05 II) had its respiratory activity enhanced by all the agrochemicals.

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How to Cite

Ostiz, S. de B., Musumeci, M. R., & Tsai, S. M. (2014). The effects of agrochemicals on survival and respiratory actvity of <i>Rhizobium leguminosarum</i> bv. <i>Phaseoli</> and <i>Bradyrhizobium japonicum</i>. Pesquisa Agropecuaria Brasileira, 24(6), 663–667. https://doi.org/10.1590/S1678-3921.pab1989.v24.15863

Issue

v.24, n.6, jun. 1989

Section

FERTILIZATION