Calcium:magnesium ratio in amendments of soil acidity: nutrition and initial development of corn plants in a Humic Alic Cambisol

Authors

  • João Carlos Medeiros Universidade de São Paulo
  • Jackson Adriano Albuquerque Universidade do Estado de Santa Catarina
  • Álvaro Luiz Mafra Universidade do Estado de Santa Catarina
  • Jaqueline Dalla Rosa Universidade de São Paulo
  • Luciano Colpo Gatiboni Universidade do Estado de Santa Catarina

DOI:

https://doi.org/10.5433/1679-0359.2008v29n4p799

Keywords:

Liming, Nutrients, Soil fertility, Zea mays.

Abstract

The variation in the Ca:Mg ratio in amendments used to neutralize soil acidity is one way of altering the availability of those nutrients to the plants in acid soils. The objective of the work was to evaluate the effect of different proportions of calcium and magnesium in the form of CaCO3 and MgCO3 on the nutrient uptake, and initial production of dry matter by corn plants. The study was carried out in greenhouse conditions, in Lages, SC, with a completely randomized experimental design, with three replications. The treatments were the application of equivalent to 21.0 t ha-1 of lime, using mixtures of CaCO3 and MgCO3 in several proportions to obtain different Ca:Mg ratios (1:1, 2:1, 4:1, 8:1, 16:1 and 32:1), on a Humic Alic Cambisol, with 310 g kg-1 of clay. The application of treatments caused the following Ca:Mg ratios in the CEC: 1.1:1, 2.1:1, 4.0:1, 8.1:1, 16.4:1 and 31.8:1. The high concentrations of exchangeable Ca in soil caused by addition of lime with high Ca content inhibited the uptake of Mg and K by the corn plants. The increase in the soil Ca:Mg ratio reduced the dry matter production and height of plants in the initial stage of development.

Author Biographies

João Carlos Medeiros, Universidade de São Paulo

MSc., Doutorando em Solos e Nutrição de Plantas USP/ESALQ.

Jackson Adriano Albuquerque, Universidade do Estado de Santa Catarina

Professor, Dr. Departamento de Solos e Recursos Naturais, UDESC. Lages (SC).

Álvaro Luiz Mafra, Universidade do Estado de Santa Catarina

Professor, Dr. Departamento de Solos e Recursos Naturais, UDESC. Lages (SC).

Jaqueline Dalla Rosa, Universidade de São Paulo

MSc., Doutorando em Solos e Nutrição de Plantas USP/ESALQ.

Luciano Colpo Gatiboni, Universidade do Estado de Santa Catarina

Professor, Dr. Departamento de Solos e Recursos naturais, UDESC Lages (SC). Pesquisador do CNPq.

Published

2008-08-30

How to Cite

Medeiros, J. C., Albuquerque, J. A., Mafra, Álvaro L., Rosa, J. D., & Gatiboni, L. C. (2008). Calcium:magnesium ratio in amendments of soil acidity: nutrition and initial development of corn plants in a Humic Alic Cambisol. Semina: Ciências Agrárias, 29(4), 799–806. https://doi.org/10.5433/1679-0359.2008v29n4p799

Issue

Section

Articles