Transformations of Carbon, Nitrogen, and Metals in Soils Treated with Waste Materials

Sommers, L. E.; Nelson, D. W.; Silviera, D.J.

doi:10.2134/jeq1979.00472425000800030005x

Cited by 41 publications

(8 citation statements)

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“…Isto significa que, ao final dos dez primeiros dias de incubação, mais da metade do C o foi liberado na forma de C-CO 2 , evidenciando, assim, uma fase de rápida mineralização, seguida de outra mais lenta e de estabilização dos fluxos de C-CO 2 . Esse comportamento é comum quando se adicionam resídu-os orgânicos a solos agrícolas (Sommers et al, 1979;Bernal et al, 1998).…”

Section: Resultsunclassified

Mineralização do carbono orgânico em solos tratados com lodo de curtume

Martines¹,

Andrade

Cardoso³

2006

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar a mineralização do carbono orgânico do lodo de curtume, aplicado em solos com diferentes classes texturais, de modo a caracterizar a cinética do processo de mineralização e auxiliar na elaboração de normas técnicas sobre o uso agrícola desse material. Foram conduzidos experimentos de incubação por 105 dias, em laboratório, utilizando-se três solos: Nitossolo Vermelho eutroférrico típico (NVef), Latossolo Vermelho-Amarelo distrófico típico (LVAd) e Neossolo Quartzarênico órtico típico (RQo). O lodo de curtume utilizado nos experimentos foi composto de uma mistura, na proporção de 1:1, do lodo do caleiro e do lodo primário da estação de tratamento de efluentes, resultante da precipitação dos efluentes gerados no processo, com exceção dos efluentes que contêm cromo. As doses aplicadas (base seca) no NVef e LVAd foram equivalentes a 0, 6, 12, 24 e 36 Mg ha -1 e a 0, 3, 6, 12 e 24 Mg ha -1 no RQo. Não se observa prejuízo à atividade microbiana dos solos, avaliada por meio da respiração basal, e a mineralização do carbono adicionado por meio do lodo de curtume é intensa nos primeiros 15 a 20 dias de incubação.Termos para indexação: resíduo orgânico, respiração basal, atividade microbiana. Mineralization of the organic carbon in soils treated with tannery sludgesAbstract -The objective of this work was to evaluate the mineralization of the organic carbon derived from the tannery sludge applied in increasing doses on soils with different textures, to evaluate the decomposition kinetics, as well as to learn about the impact of this residue on the soil microbial community. This knowledge will be helpful for the establishment of technical rules about the agricultural use of the tannery sludges. Incubation experiments were carried out in the laboratory for 105 days, using three soils: a Kandiudalfic Eutrudox (NVef), a Typic Hapludox (LVAd) and a Typic Quartzipsamment (RQo). Tannery sludge used in these experiments was composed of a mixture of liming sludge and the primary sludge from the wastewater treatment station, in the proportion 1:1, with the exception of the wastewater with chromium. The doses of sludge (dry basis) added to the NVef and the LVAd soils were equivalent to 0, 6, 12, 24 and 36 Mg ha -1 , and 0, 3, 6, 12 and 24 Mg ha -1 were added to the RQo soil. Soil microbial activity was not inhibited, even by the highest doses, and the most intense carbon degradation occurred on the first 15 to 20 days of incubation.

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Section: Resultsunclassified

Mineralização do carbono orgânico em solos tratados com lodo de curtume

Martines¹,

Andrade

Cardoso³

2006

Pesq. agropec. bras.

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“…Some of them showed that the C and N mineralization rates varied with the sewage sludges (7,11,13,15). PARKER and SOMMERS (13) observed that the percentage of sludge N mineralized was related to the concentration of organic N in the sludges.…”

mentioning

confidence: 99%

Decomposition of Sewage Sludges in Soil as Affected by their Organic Matter Composition

Hattori

Mukai

1986

Soil Science and Plant Nutrition

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“…Degradation manifested in decreased TST and induced adverse changes in soil properties, but organic amendments improved soil CEC, total N and organic matter contents and enhanced plant performance. Previous work has demonstrated the agronomic benefits of soil incorporation of organic wastes for the revegetation of degraded soils (Summers et al 1979, Brown et al 1982, Topper & Sabey 1986, Wong & Wong 1989, Chu & Bradshaw 1996. In this study, surface application of topsoil, municipal waste and NPK fertilizer created artificial topsoil layer and/or overcame structural and nutrient stresses in the surface horizon and provided a store of nutrients (organic matter) which through mineralization released nutrients slowly to the nutrient pool and become available for plant uptake.…”

Section: Discussionmentioning

confidence: 88%

“…Biological re-utilization of organic wastes will reduce environmental pollution and enhance landscape appearance (Parr & Papendick 1993). Their suitability nevertheless depends on edaphic properties (Summers et al 1979, Topper & Sabey 1986. Biorestoration of degraded landscapes for environmental protection built on the recruitment of native components of biodiversity will reduce initial and maintenance costs of reclamation process.…”

Section: Introductionmentioning

confidence: 99%

Efficacy of organic wastes amendment on the establishment and biomass yield of grass species on a degraded Alfisol

Agele

2007

Journal of Plant Interactions

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Deficiencies of organic matter and essential nutrients are important features of derelict/degraded lands; these characteristics have profound effects on the establishment of functional soil-plant systems on such lands. This work reports on the impact of organic wastes amendments on the establishment, growth and biomass yield of grass mixtures grown on a degraded soil. The experimental site was a heavily compacted and eroded land due to excavation (scrapping) of topsoil layer for urban construction activities. Zero, 10 and 20 cm layers each of substrates collected from old (abandoned) municipal refuse and from site affected by long-term surface disposal of livestock litter and topsoil collected under fallow vegetation were applied on soil surface, before the establishment of a mixture of grass species. Substrates collected from old municipal refuse contained high amount of essential nutrients and metals and, on application, produced upward shift in soil pH and electrical conductivity. Nevertheless, these properties neither significantly retarded plant growth nor impaired biomass yield. Plant establishment and biomass yield were comparable under topsoil application and organic waste amended soil and produced significantly higher biomass yield when spread at 20 cm layers were made of them. This experimental group also produced superior biomass yield over the unamended control. The agronomic benefits of organic waste incorporation stemmed from improved soil properties in surface horizon and contents of essential nutrients supportive of the establishment and development of plant cover. Nutrient supply is related to soil organic matter status, organic wastes are therefore important to the reconstruction of effective nutrient cycling and the eventual functional soil-plant system on this degraded ecosystem. The goal of these revegetation efforts is to improve soil and plant productivity, plant diversity, conservation of native grasslands and aesthetic.

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Transformations of Carbon, Nitrogen, and Metals in Soils Treated with Waste Materials

Cited by 41 publications

References 0 publications

Mineralização do carbono orgânico em solos tratados com lodo de curtume

Mineralização do carbono orgânico em solos tratados com lodo de curtume

Decomposition of Sewage Sludges in Soil as Affected by their Organic Matter Composition

Efficacy of organic wastes amendment on the establishment and biomass yield of grass species on a degraded Alfisol

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