Carbon sequestration and greenhouse gases emissions in soil under sewage sludge residual effects

Pitombo, Leonardo Machado; Carmo, Janaína Braga do; Maria, Isabela Clerici de; Andrade, Cristiano Alberto de

doi:10.1590/0103-9016-2013-0352

Cited by 21 publications

(11 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In a field experiment with a SS-amended clay soil cropped with maize in Brazil (Pitombo et al 2015), two different doses (10 and 20 Mg DM ha -1 yr -1 with 27.9% C in SS DM, corresponding to 2.79 and 5.58 Mg ha -1 yr -1 ) were applied annually during 7 years, supplying a total amount of 19.5 Mg and 39.1 Mg C ha -1 , respectively. The increase in soil C stocks down to 0.40 m depth was determined to be (72.5-control 58.8) = 13.7 Mg C ha -1 and (83.1-58.8) = 24.3 Mg C ha -1 , respectively.…”

Section: Soil Carbonmentioning

confidence: 99%

Soil fertility effects of repeated application of sewage sludge in two 30-year-old field experiments

Börjesson

Kätterer

2018

Nutr Cycl Agroecosyst

View full text Add to dashboard Cite

Recirculation of plant nutrients from waste materials back to agriculture is necessary in a sustainable food production system. In this study we investigated the long-term effect of direct land application of sewage sludge (SS) on soil fertility on two Swedish farms, where field experiments were set up in 1981 with three rates of SS (0, 4 and 12 Mg dry matter ha-1 every 4 years) and three rates of mineral fertilisation, in a factorial design with four replicates. At one site, SS application tended to increase crop yield over time but, when plant nutrients were not limiting, the effect was only significant for spring barley. We deduced that improved soil structure was the main driver for this fertility enhancement after SS application, as indicated by lower soil bulk density and higher soil carbon concentration. After 30 years, soil organic carbon stocks to 0.40 m depth differed by up to 17 Mg ha-1 between treatments. According to carbon balance calculations, retention of carbon derived from SS ranged between 18 and 20% for the soil layers analysed at the two sites. Soluble phosphorus (P) increased with sludge application rate, but represented only around 2% of the expected residual P according to P-balance calculations. The fertiliser value of nitrogen was also low, with only 3-8% nitrogen use efficiency. Heavy metals such as copper, zinc and mercury showed moderate accumulation in the soil, but elevated levels of metals were not detected in crops, even at the highest dose of SS. These results show that SS represents a valuable resource for improving soil fertility in terms of soil organic matter and soil structure, but its efficiency for nutrient cycling is very low within the time frame considered in the study.

show abstract

Section: Soil Carbonmentioning

confidence: 99%

Soil fertility effects of repeated application of sewage sludge in two 30-year-old field experiments

Börjesson

Kätterer

2018

Nutr Cycl Agroecosyst

View full text Add to dashboard Cite

show abstract

“…It is known that the fraction of carbon in the C/N ratio comprises organic fractions of different materials (Pitombo et al, 2015). The C fraction of this ratio describes the amount of organic compounds in this relation, and thus a better absorption of nutrients and CO2 may increase or decrease the percentages of this element simply due to the production of more tissues by plants.…”

Section: Discussionmentioning

confidence: 99%

Resistance to water deficit during the formation of sugarcane seedlings mediated by interaction with Bacillus sp.

Santos¹,

Stancatte²,

Ferreira³

et al. 2017

Científica

View full text Add to dashboard Cite

show abstract

“…On the other hand, some authors reported negative aspects of the agricultural application of organic wastes. In line with the literature, they include: raising the levels of heavy metals in the soil and vegetation [14] increase in soil salinity [13], reduction in microbial activity [25], greenhouse gas emissions and the release of odorous compounds [26,27]. Due to the above adverse effects and possible food chain contamination, a regular monitoring of soil and plant parts properties should be taken up while organic waste continuous use.…”

Section: Introductionmentioning

confidence: 90%

The effect of application of digestate and agro-food industry sludges on Dystric Cambisol porosity

et al. 2020

View full text Add to dashboard Cite

The spatial arrangement and pore size distribution play an important role in accumulation and protection of exogenous organic matter (EOM) in the soil, but how different organic materials contribute to modify pore structure is poorly understood. We aimed at exploring possible changes in the complexity of the soil phase during fertilization with different doses of digestate and sludges sourced from the agro-food industry. For this purpose, the shortterm effects-one year, of soil fertilization, were investigated in several sampling periods and within two depths (0-25 cm and 25-40 cm). Changes in the specific surface area (SSA), total pore volume (V MIP), total pore area (S MIP), average pore radius (R MIP) and pore size distribution (PSD) were monitored using N 2 adsorption/desorption (NAD) and mercury porosimetry (MIP) methods. Our results showed that the intensity of observed changes depended on the type and dose of organic material, soil depth and sampling date. Accumulation of EOM increased with soil depth, masking a large proportion of SSA. Deeper soil layer was more susceptible to changes in the pore size distributions due to the formation of new elongated pores. We concluded that this specific structural porosity was related to the decomposition of organic matter during the formation of soil aggregates.

show abstract

Carbon sequestration and greenhouse gases emissions in soil under sewage sludge residual effects

Cited by 21 publications

References 53 publications

Soil fertility effects of repeated application of sewage sludge in two 30-year-old field experiments

Soil fertility effects of repeated application of sewage sludge in two 30-year-old field experiments

Resistance to water deficit during the formation of sugarcane seedlings mediated by interaction with Bacillus sp.

The effect of application of digestate and agro-food industry sludges on Dystric Cambisol porosity

Contact Info

Product

Resources

About