Ciência Rural (Nov 2019)

Nodulation, nitrogen uptake and growth of lima bean in a composted tannery sludge-treated soil

  • Sandra Mara Barbosa Rocha,
  • Jadson Emanuel Lopes Antunes,
  • Antonio Victor Cavalcante Rocha Silva,
  • Louise Melo de Souza Oliveira,
  • João Pedro Alves de Aquino,
  • Wanderley Jose de Melo,
  • Marcia do Vale Barreto Figueiredo,
  • Ademir Sérgio Ferreira de Araujo

DOI
https://doi.org/10.1590/0103-8478cr20190301
Journal volume & issue
Vol. 49, no. 11

Abstract

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ABSTRACT: This study evaluated the responses of lima bean (Phaseolus lunatus L.) to application of composted tannery sludge on nodulation, N uptake and plant growth. For eight years, the compost was applied at rates of: 0, 2.5, 5, 10, and 20 Mg ha-1 (dry basis). Plants of lima bean showed higher nodulation in treatments with compost; however, nodules reported in these treatments presented lower biomass, size and diversity than those reported in treatment without compost. Accumulation of N increased with the application of the highest rate (20 Mg ha-1), while there was an increase in chromium content in shoot with the increase in compost rates. Thus, the use of composted tannery sludge, in long-term, increases the accumulation of chromium in plants, increasing nodulation, while decrease rhizobia diversity in nodules.

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