Industrial and urban organic wastes increase soil microbial activity and biomass
Microbial processes have been used as indicators of soil quality, due to the high sensitivity to small changes in management to evaluate, e.g., the impact of applying organic residues to the soil. In an experiment in a completely randomized factorial design 6 x 13 + 4, (pot without soil and residue...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Ciência do Solo
2012-11-01
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| Series: | Revista Brasileira de Ciência do Solo |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000500027&lng=en&tlng=en |
| _version_ | 1819060507009613824 |
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| author | Cácio Luiz Boechat Jorge Antonio Gonzaga Santos Adriana Maria de Aguiar Accioly Marcela Rebouças Bomfim Adailton Conceição dos Santos |
| author_facet | Cácio Luiz Boechat Jorge Antonio Gonzaga Santos Adriana Maria de Aguiar Accioly Marcela Rebouças Bomfim Adailton Conceição dos Santos |
| author_sort | Cácio Luiz Boechat |
| collection | DOAJ |
| description | Microbial processes have been used as indicators of soil quality, due to the high sensitivity to small changes in management to evaluate, e.g., the impact of applying organic residues to the soil. In an experiment in a completely randomized factorial design 6 x 13 + 4, (pot without soil and residue or absolute control) the effect of following organic wastes was evaluated: pulp mill sludge, petrochemical complex sludge, municipal sewage sludge, dairy factory sewage sludge, waste from pulp industry and control (soil without organic waste) after 2, 4, 6, 12, 14, 20, 28, 36, 44, 60, 74, 86, and 98 days of incubation on some soil microbial properties, with four replications. The soil microbial activity was highly sensitive to the carbon/nitrogen ratio of the organic wastes. The amount of mineralized carbon was proportional to the quantity of soil-applied carbon. The average carbon dioxide emanating from the soil with pulp mill sludge, corresponding to soil basal respiration, was 0.141 mg C-CO2 100 g-1 soil h-1. This value is 6.4 times higher than in the control, resulting in a significant increase in the metabolic quotient from 0.005 in the control to 0.025 mg C-CO2 g-1 Cmic h-1 in the soil with pulp mill sludge. The metabolic quotient in the other treatments did not differ from the control (p < 0.01), demonstrating that these organic wastes cause no disturbance in the microbial community. |
| first_indexed | 2024-12-21T14:28:05Z |
| format | Article |
| id | doaj.art-d34b042380154aa0a061442ec8c2a154 |
| institution | Directory Open Access Journal |
| issn | 1806-9657 |
| language | English |
| last_indexed | 2024-12-21T14:28:05Z |
| publishDate | 2012-11-01 |
| publisher | Sociedade Brasileira de Ciência do Solo |
| record_format | Article |
| series | Revista Brasileira de Ciência do Solo |
| spelling | doaj.art-d34b042380154aa0a061442ec8c2a1542022-12-21T19:00:34ZengSociedade Brasileira de Ciência do SoloRevista Brasileira de Ciência do Solo1806-96572012-11-013651629163610.1590/S0100-06832012000500027S0100-06832012000500027Industrial and urban organic wastes increase soil microbial activity and biomassCácio Luiz BoechatJorge Antonio Gonzaga Santos0Adriana Maria de Aguiar AcciolyMarcela Rebouças BomfimAdailton Conceição dos SantosUniversidade Federal do Recôncavo da BahiaMicrobial processes have been used as indicators of soil quality, due to the high sensitivity to small changes in management to evaluate, e.g., the impact of applying organic residues to the soil. In an experiment in a completely randomized factorial design 6 x 13 + 4, (pot without soil and residue or absolute control) the effect of following organic wastes was evaluated: pulp mill sludge, petrochemical complex sludge, municipal sewage sludge, dairy factory sewage sludge, waste from pulp industry and control (soil without organic waste) after 2, 4, 6, 12, 14, 20, 28, 36, 44, 60, 74, 86, and 98 days of incubation on some soil microbial properties, with four replications. The soil microbial activity was highly sensitive to the carbon/nitrogen ratio of the organic wastes. The amount of mineralized carbon was proportional to the quantity of soil-applied carbon. The average carbon dioxide emanating from the soil with pulp mill sludge, corresponding to soil basal respiration, was 0.141 mg C-CO2 100 g-1 soil h-1. This value is 6.4 times higher than in the control, resulting in a significant increase in the metabolic quotient from 0.005 in the control to 0.025 mg C-CO2 g-1 Cmic h-1 in the soil with pulp mill sludge. The metabolic quotient in the other treatments did not differ from the control (p < 0.01), demonstrating that these organic wastes cause no disturbance in the microbial community.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000500027&lng=en&tlng=enrespiração microbianacarbono microbianonitrogênio microbianoquociente metabólicolodo orgânico |
| spellingShingle | Cácio Luiz Boechat Jorge Antonio Gonzaga Santos Adriana Maria de Aguiar Accioly Marcela Rebouças Bomfim Adailton Conceição dos Santos Industrial and urban organic wastes increase soil microbial activity and biomass Revista Brasileira de Ciência do Solo respiração microbiana carbono microbiano nitrogênio microbiano quociente metabólico lodo orgânico |
| title | Industrial and urban organic wastes increase soil microbial activity and biomass |
| title_full | Industrial and urban organic wastes increase soil microbial activity and biomass |
| title_fullStr | Industrial and urban organic wastes increase soil microbial activity and biomass |
| title_full_unstemmed | Industrial and urban organic wastes increase soil microbial activity and biomass |
| title_short | Industrial and urban organic wastes increase soil microbial activity and biomass |
| title_sort | industrial and urban organic wastes increase soil microbial activity and biomass |
| topic | respiração microbiana carbono microbiano nitrogênio microbiano quociente metabólico lodo orgânico |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000500027&lng=en&tlng=en |
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