Chemical attributes of soils with eggshell application

Autores

  • José Ricardo Mantovani Universidade José do Rosário Vellano, Instituto de Ciências Agrárias.
  • Matheus Esteves Rocha Ferreira Universidade José do Rosário Vellano Faculdade de Agronomia
  • Anderson Romão dos Santos Universidade José do Rosário Vellano Faculdade de Agronomia
  • Belchior de Souza Costa Universidade José do Rosário Vellano Faculdade de Agronomia
  • Ligiane Aparecida Florentino Universidade José do Rosário Vellano Faculdade de Agronomia

DOI:

https://doi.org/10.15361/1984-5529.2017v45n3p307-312

Resumo

Eggshell is an industrial residue which can be used as an acidity corrective, but its employment must follow some criteria. The objective of the present work was to evaluate the effect of eggshell on fertility attributes of soils with different clay contents. The experiment was conducted under laboratory conditions, from September to December 2015. A completely randomized design was used in a 2 x 6 factorial scheme, with two additional treatments and four replications, totaling 56 experimental units. The treatments were composed by the combination of two soils with different texture classes (sandy and clayey) and six doses (0, 1, 2, 3, 4 and 5 t ha-1) of eggshell, based on the volume of soil used. In the additional treatments, dolomitic limestone was used in each soil, instead of eggshell, aiming to raise their initial base saturation (V%) to 70%. Portions of 0.25 dm3 of each soil received the doses of eggshell or limestone, being then moistened to 70% of the water retention capacity and remaining in incubation for 60 days. After the incubation, the pH in CaCl2, the potential acidity (H+Al) and the soil contents of P, extracted by Mehlich, K+, Ca2+, Mg2+ e Al3+ were evaluated. Eggshell corrects the acidity and increases the Ca2+ and Mg2+ levels, especially in sandy soil, yet less efficiently than limestone.

Biografia do Autor

José Ricardo Mantovani, Universidade José do Rosário Vellano, Instituto de Ciências Agrárias.

Doutor em Agronomia, Docente da Faculdade de Agronomia da Universidade José do Rosário Vellano

Arquivos adicionais

Publicado

06/07/2017

Edição

Seção

Solos e Nutrição de Plantas - Soils and Plant Nutrition