Determinação de matéria orgânica em solos: estudo comparativo de métodos

Verlengia, Flávio; Gargantini, Hermano

doi:10.1590/S0006-87051968000200005

Resumos

São comparados diversos métodos de determinação de matéria orgânica do solo para verificar o mais preciso e capaz de apresentar maior rapidez nas determinações. Compararam-se quatro métodos conhecidos. Verificou-se que os preconizados por Frattini e Kalckman e por Reid e Copeland foram os que melhores resultados apresentaram, encontrando-se coeficientes de correlação de 0,996 e 0,998, respectivamente, com o método padrão de combustão sêca.

A comparison of four different methods (dry combustion and three colorimetric methods) to determine organic matter content in soils was made in order to check their precision and speed. The colorimetric methods developed by Reid & Copeland (7) and by Frattini & Kalckman (4) presented the best results. They permit to handle a large number of samples in a relatively short period with high precision (coefficients of correlation were 0.998 and 0.996, respectively), as compared with the dry combustion method.

Flávio Verlengia; Hermano Gargantini

Engenheiros-agrônomos, Seção de Fertilidade do Solo, Instituto Agronômico

SINOPSE

São comparados diversos métodos de determinação de matéria orgânica do solo para verificar o mais preciso e capaz de apresentar maior rapidez nas determinações. Compararam-se quatro métodos conhecidos. Verificou-se que os preconizados por Frattini e Kalckman e por Reid e Copeland foram os que melhores resultados apresentaram, encontrando-se coeficientes de correlação de 0,996 e 0,998, respectivamente, com o método padrão de combustão sêca.

SUMMARY

A comparison of four different methods (dry combustion and three colorimetric methods) to determine organic matter content in soils was made in order to check their precision and speed.

The colorimetric methods developed by Reid & Copeland (7) and by Frattini & Kalckman (4) presented the best results. They permit to handle a large number of samples in a relatively short period with high precision (coefficients of correlation were 0.998 and 0.996, respectively), as compared with the dry combustion method.

Texto completo disponível apenas em PDF.

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LITERATURA CITADA

Recebido para publicação em 1.º de dezembro de 1967.

1. ALLISON, L. E. Organic soil carbon by reduction of chromic acid. Soil Sci. 40:311-320, 1935.
2. CAROLAN, R. Modification of Graham's method for determining soil organic matter by colorimetric analysis. Soil Sci. 66:241-247, 1948.
3. DEGTJAREFF, W. T. Determining soil organic matter by means of hydrogen proxide and chromic acid. Soil Sci. 29:239-245, 1930.
4. FRATTINI, C. T. A. & KALCKMAN, R. E. Correlaçăo entre alguns métodos de determinaçăo de carbono. (Trabalho apresentado no XI Congresso Brasileiro de Cięncia do Solo, Piracicaba, 1965)
5. GRAHAM, E. R. Determination of soil organic matter by means of photoelectric colorimeter. Soil Sci. 65:181-183, 1948.
6. PERRIER, E. R. & KELLOGG, M. Colorimetric determination of soil organic matter. Soil Sci. 90:104-106, 1960.
7. REID, P. H. & COPELAND, C. Tentative analytical methods used for the testing of farmers samples by the Soil Testing Division, North Carolina Department of Agriculture. Raleigh, 1966.
8. SCHOLLENBERGER, C. J. A rapid approximate method for determining soil organic matter. Soil Sci. 24:65-68, 1927.
9. WALKLEY, A. A critical examination of a rapid method for determining organic carbon in soils. Effect of variations in digestion conditions and of inorganic soil constituents. Soil Sci 63:251-264, 1947.
10. ________. An examination of methods for determining organic carbon and nitrogen in soils. J. agric. Sci. 25:598, 1935.
11. ________ & BLACK, I. A. An examination of the Degtjareff method for determining soil organic matter, and a proposed modification of the chromic acid titration method. Soil Sci. 37:29-38, 1934.
12. WINTERS JR., E. & SMITH, R. S. Determination of total carbon in soils. Industr. Engng Chem. (Anal.) 1:202-204, 1929.

Determinação de matéria orgânica em solos Estudo comparativo de métodos

Organic matter determination in soil: comparative study of methods

Datas de Publicação

Publicação nesta coleção
19 Mar 2009
Data do Fascículo
1968

Histórico

Recebido
01 Dez 1967

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

[1] 1. ALLISON, L. E. Organic soil carbon by reduction of chromic acid. Soil Sci. 40:311-320, 1935.

[2] 2. CAROLAN, R. Modification of Graham's method for determining soil organic matter by colorimetric analysis. Soil Sci. 66:241-247, 1948.

[3] 3. DEGTJAREFF, W. T. Determining soil organic matter by means of hydrogen proxide and chromic acid. Soil Sci. 29:239-245, 1930.

[4] 4. FRATTINI, C. T. A. & KALCKMAN, R. E. Correlaçăo entre alguns métodos de determinaçăo de carbono. (Trabalho apresentado no XI Congresso Brasileiro de Cięncia do Solo, Piracicaba, 1965)

[5] 5. GRAHAM, E. R. Determination of soil organic matter by means of photoelectric colorimeter. Soil Sci. 65:181-183, 1948.

[6] 6. PERRIER, E. R. & KELLOGG, M. Colorimetric determination of soil organic matter. Soil Sci. 90:104-106, 1960.

[7] 7. REID, P. H. & COPELAND, C. Tentative analytical methods used for the testing of farmers samples by the Soil Testing Division, North Carolina Department of Agriculture. Raleigh, 1966.

[8] 8. SCHOLLENBERGER, C. J. A rapid approximate method for determining soil organic matter. Soil Sci. 24:65-68, 1927.

[9] 9. WALKLEY, A. A critical examination of a rapid method for determining organic carbon in soils. Effect of variations in digestion conditions and of inorganic soil constituents. Soil Sci 63:251-264, 1947.

[10] 10. ________. An examination of methods for determining organic carbon and nitrogen in soils. J. agric. Sci. 25:598, 1935.

[11] 11. ________ & BLACK, I. A. An examination of the Degtjareff method for determining soil organic matter, and a proposed modification of the chromic acid titration method. Soil Sci. 37:29-38, 1934.

[12] 12. WINTERS JR., E. & SMITH, R. S. Determination of total carbon in soils. Industr. Engng Chem. (Anal.) 1:202-204, 1929.

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