> Details

Leite, Robson da Costa [Author]; Lucheta, Adriano Reis [Author]; Holanda, Roseanne Barata [Author]; Silva, Patricia Magalhães Pereira [Author]; Carmo, Andre Luiz Vilaça do [Author]; Gomes, Fernando Gama [Author]; Leite, Rubson da Costa [Author]; Melo, Caio César Amorim de [Author]; Costa, Raphael Vieira da [Author]; Montini, Marcelo [Author]; Fernandes, Antonio Rodrigues [Author]

Agronomic Evaluation and Environmental Assessment of Soil Conditioners Produced from Bauxite Residue and Oil Palm Wastes

Reference
management

Bookmarks

Remove from
bookmarks

Share this on Whatsapp

Close

Bookmarks



You can manage bookmarks using lists, please log in to your user account for this.
  • Media type: E-Book
  • Title: Agronomic Evaluation and Environmental Assessment of Soil Conditioners Produced from Bauxite Residue and Oil Palm Wastes
  • Contributor: Leite, Robson da Costa [Author]; Lucheta, Adriano Reis [Author]; Holanda, Roseanne Barata [Author]; Silva, Patricia Magalhães Pereira [Author]; Carmo, Andre Luiz Vilaça do [Author]; Gomes, Fernando Gama [Author]; Leite, Rubson da Costa [Author]; Melo, Caio César Amorim de [Author]; Costa, Raphael Vieira da [Author]; Montini, Marcelo [Author]; Fernandes, Antonio Rodrigues [Author]
  • Published: [S.l.]: SSRN, 2023
  • Extent: 1 Online-Ressource (31 p)
  • Language: English
  • DOI: 10.2139/ssrn.4388250
  • Identifier:
  • Keywords: Crop Production ; element leaching ; residue reuse ; soil fertility
  • Origination:
  • Footnote:
  • Description: Soil conditioners, by definition, are a class of products used to enhance physics, physicochemical or soil biological activities, being able to recover disturbed or nutritional unbalanced soils. The formulation of a soil conditioner composed by bauxite residue (BR), and organic oil palm wastes, as raw materials, was recently proposed as an innovative strategy for the Brazilian acid soils amendment. Thus, the objectives were show the preliminary results of soil conditioner amended soil leaching tests and agronomical performance on Brachiaria grass (Urochloa híbrida cv. Sabiá).The soil conditioners were formulated by BR mixed with decomposed POC (palm oil compost) and non-decomposed POMW (palm oil mill waste) oil palm wastes, in the proportion of 25% BR + 75% POC (T1) and 50% BR + 50% POMW (T2), in addition to the treatment with 100% POMW without BR (T3) and limestone at a dose calculated to raise soil pH to 6.0 (T4). With the exception of T4, all conditioners were applied to the soil at doses of 40, 80, and 120 t ha−1 for leaching tests. The experimental plots were composed of polyvinyl chloride columns, filled with 5 kg of soil, with bottles adapted with hoses at the bottom to facilitate drainage and leachate collection. After leaching tests, the respective columns were used as pots for the cultivation of Brachiaria grass, stage with addition of a control composed by undisturbed soil (T5). The pH of the leachates had changes but the use of BR associated with POMW was similar to the use of limestone. As for soil pH, limestone was slightly higher (6.6) than treatments that had BR (5.5). Of the 65 chemical elements evaluated, only nine were identified in the leachate, being most of them considered as plant nutrients. No potential toxic elements were identified in the leachate of the soils amended with the soil conditioner formulations. Brachiaria cultivated in the soil amended with conditioners showed similar results of limestone treated soil for plant height, root dry mass, increased the number tillers and remaining treated soils, showed fertility improvement. Therefore, conditioners containing BR have potential for improving soil physicochemical and Brachiaria production parameters
  • Access State: Open Access