Effect of sewage sludge on microbial biomass, basal respiration, metabolic quotient and soil enzymatic activity

Fernandes, Silvana Aparecida Pavan; Bettiol, W.; Cerri, Carlos C.

doi:10.1016/j.apsoil.2004.03.008

Cited by 179 publications

(136 citation statements)

References 27 publications

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“…Indeed, changes in the composition of microbial communities as a result of incorporating inorganic or organic amendments were observed (Marschner et al 2003). Generally, organic waste application stimulates soil microbial processes by increasing the number of culturable bacteria and fungi, microbial biomass C and N, basal respiration and enzyme activities (Fernandes et al 2005). The results showed that organic C content was affected by incubation time significantly.…”

Section: Discussionmentioning

confidence: 57%

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Soil water potential effects on the cellulase activities of soil treated with sewage sludge

Sinegani¹,

Mahohi²

2010

PLANT SOIL ENVIRON

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To better understand how water stress and availability affect the enzyme activity and microbial communities in soil, we measured the changes of organic carbon (OC), bacteria and fungi populations, and endoglucanase and exoglucanase activities in a semiarid soil treated with air-dried primary sewage sludge at a rate of 20 g/kg. The water potentials established for soil incubation were: saturation (SA, 0 bar), field capacity (FC, -0.3 bar), and permanent wilting point (PWP, -15 bar). An irrigation treatment was a drying-rewetting cycle (DWC) between -0.3 to -15 bars. After 0, 20, 60 and 90 days of incubation soils were sampled for analysis. The addition of sewage sludge increased soil OC, endoglucanase and exoglucanase activities significantly. The effects of soil moisture, incubation time and their interactions on OC, and endoglucanase and exoglucanase activities in soil were significant. During 20 days of incubation, OC, endoglucanase and exoglucanase activities decreased significantly. Soils incubated in DWC and FC compared to soils incubated in SA and PWP had lower OC contents due to organic matter mineralization. Organic C, exoglucanase and endoglucanase activities significantly increased with increasing soil water potential. The activities of exoglucanase and endoglucanase in soils incubated in SA were significantly higher than those in soils incubated in PWP.

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Section: Discussionmentioning

confidence: 57%

“…Many researchers reported a positive effect of the addition organic matter to soil on enzymes activities (Fernandes et al 2005).…”

Section: Discussionmentioning

confidence: 99%

Soil water potential effects on the cellulase activities of soil treated with sewage sludge

Sinegani¹,

Mahohi²

2010

PLANT SOIL ENVIRON

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“…Nesse sentido, o ácido húmico da área de mata sinaliza a ocorrência dessas condições, tendo em vista que o enriquecimento de C-alifático nessas frações e o menor grau de condensação parecem refletir o equilíbro de frações mais e menos lábeis em solo. A aplicação de lodo, principalmente em doses mais elevadas, parece assegurar um aumento da biodisponibilidade das frações orgânicas no solo, o que está de acordo com os dados apresentados por Fernandes et al (2005), que verificaram aumentos da respiração basal, dos teores de C e N na biomassa, da atividade enzimática e do quociente metabólico microbiano proporcionais à adição de doses de lodo de esgoto ao solo.…”

Section: Os Espectros De Infravermelho Para Os áCidosunclassified

Infravermelho na caracterização de ácidos húmicos de latossolo sob efeito de uso contínuo de lodo de esgoto

Dias

Silva²,

Soares³

et al. 2009

Rev. Bras. Ciênc. Solo

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RESUMOObjetivou-se caracterizar, por meio de espectroscopia no infravermelho com transformada de Fourier (IVTF), possíveis mudanças na natureza química de ácidos húmicos (AHs) extraídos de amostras de Latossolo (0-10 cm) do Campo Experimental da Embrapa Meio Ambiente, em Jaguariúna (SP). Os dados foram obtidos após seis cultivos de milho e a aplicação de doses variáveis de lodo de esgoto de Barueri (LB) (base seca), conforme os tratamentos avaliados: LB0, LB1, LB2, LB4 e LB8, sendo 0, 1, 2, 4 e 8 vezes a necessidade de N para o milho. Como referência, foi amostrada uma área sob mata. Foram obtidos espectros de ácidos húmicos e do lodo de esgoto utilizado no experimento, e calculados os índices de hidrofobicidade (IH) e de condensação (IC) nas amostras de ácidos húmicos. Foram notadas pequenas alterações na natureza química de AHs de áreas tratadas com lodo de esgoto, em relação à testemunha. Os AHs apresentam grupos aromáticos, -OH fenólicos, -COOH, estruturas alifáticas, carboidratos e impurezas minerais. O uso contínuo de elevadas doses de LB reduziu a concentração de C-alifático e o grau de condensação dos ácidos húmicos, o que sinaliza que há frações orgânicas

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“…The addition of organic C to the soil can stimulate microbial respiration without necessarily increasing the microbial biomass, resulting in higher qCO 2 . In that case, increased qCO 2 should not be interpreted as an indicator of stressing conditions for soil biota (Fernandes et al, 2005;Thirukkumaran and Parkinson, 2000). Cr(VI) was detected in the studied soils, irrespective of the treatments, throughout all the incubation period ( Figure 4A-D).…”

Section: Scientia Agricolamentioning

confidence: 95%

Agronomic and environmental implications of using a By-Product of the Intermediate Tanning Processes as Nitrogen Fertilizer

Oliveira-Longatti

Cannata

Ferrazani

et al. 2017

Sci. agric. (Piracicaba, Braz.)

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Nitrogen (N) is an important nutrient for agriculture, and Brazil is heavily dependent on N imports. A by-product of the intermediate processes of tanning (BPIPT) may be used as an N fertilizer which will reduce this dependency, but its chromium (Cr) content is a matter of concern. This work assessed Cr (III, VI) and N (total, inorganic) contents in four soil samples ) due to the application of the BPIPT are not detrimental to biological activity in the soil. However, further investigations are still necessary to evaluate the mobility of these Cr species in the soil and possible risks of groundwater contamination, which were not addressed in this study.

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Effect of sewage sludge on microbial biomass, basal respiration, metabolic quotient and soil enzymatic activity

Cited by 179 publications

References 27 publications

Soil water potential effects on the cellulase activities of soil treated with sewage sludge

Soil water potential effects on the cellulase activities of soil treated with sewage sludge

Infravermelho na caracterização de ácidos húmicos de latossolo sob efeito de uso contínuo de lodo de esgoto

Agronomic and environmental implications of using a By-Product of the Intermediate Tanning Processes as Nitrogen Fertilizer

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