The Effect of Compost and Sewage Sludge on Soil Biologic Activities in Salt Affected Soil

Lakhdar, Abdelbasset; Scelza, Rosalia; Scotti, Riccardo; Rao, María A.; Jedidi, Naceur; Gianfreda, Liliana; Abdelly, Chédly

doi:10.4067/s0718-27912010000100005

Cited by 59 publications

(42 citation statements)

References 23 publications

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“…The result in the reduction in bulk density by the amendments was not only due to the addition of less dense organic material, but also due to the increase in soil aggregate stability [40] (Figure 6(b)). Previous studies have shown that the application of sewage sludge increased organic carbon in saline and salinized soil [41,42], subsequently increased aggregate stability in saline-sodic and salinized soil [ 42,43], and decreased bulk density in salt-soil and salinized soil [9,42]. Topsoil salinity in mudflat salt-soil decreased as a result of increasing soil aggregate stability and decreasing bulk density.…”

Section: Discussionmentioning

confidence: 99%

Sewage Sludge Amendment Combined with Green Manuring to a Coastal Mudflat Salt-Soil in Eastern China: Effects on Soil Physicochemical Properties and Maize Yield

Bai

Zuo

Yan

et al. 2017

International Journal of Agronomy

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Sewage sludge and green manure have become widely used organic amendments to croplands in many regions of the world. However, the amending effect of the combination of sewage sludge with green manuring in reclaimed coastal mudflat salt-soil has been unclear yet. This paper was one of earlier studies to investigate and evaluate the effects of sewage sludge amendment combined with green manuring on selected soil physicochemical properties of the mudflat soil in a rain-fed agroecosystem. The mudflat salt-soil was amended by one-time input of sewage sludge at the rates of 0, 30, 75, 150, and 300 t ha −1 . After green manuring for three consecutive seasons, maize (Zea mays L.) was planted in 2013 and 2014. The results showed that SSA combined with green manuring decreased bulk density, pH, salinity, and exchangeable sodium percentage of the topsoil (0-20 cm soil layer) and increased aggregate stability, cation exchange capacity, and N and P concentration of the topsoil. As a result, the maize yield increased with the increase of SSA rates. Sewage sludge combined with green manuring can be applied in coastal mudflat salt-soil amendment, which provides an innovative way to create arable land resources and safe disposal of sewage sludge.

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Section: Discussionmentioning

confidence: 99%

Sewage Sludge Amendment Combined with Green Manuring to a Coastal Mudflat Salt-Soil in Eastern China: Effects on Soil Physicochemical Properties and Maize Yield

Bai

Zuo

Yan

et al. 2017

International Journal of Agronomy

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“…Different alternatives for the disposal of such waste have been proposed at the international level, including the option of recycling waste in agricultural soils (Fytili and Zabaniotou, 2008;Fernández et al, 2007), as a way to help degraded soils restore their productivity (Esparza et al, 2004;Schleef et al, 2004;Aravena et al, 2007;Lakhdar et al, 2010). It is important to note that at least 46% of the Chilean agricultural area (34.5 million hectares) has certain degree of erosion of which 33% is severely affected (Esparza et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

STRUCTURAL REMEDIATION OF AN ALFISOL BY MEANS OF SEWAGE SLUDGE AMENDMENTS IN ASSOCIATION WITH YELLOW SERRADELA (Ornithopus compressus L.)

Sandoval

Celis

Luque

2011

J. Soil Sci. Plant Nutr.

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Wastewater treatment generates large amounts of sewage sludge, which when are disposed in highly degraded soils (with a complete loss of the A horizon and a great part of the B horizon), represent an interesting alternative to recover the aggregate level into soil. Within the hierarchy of soil systems, the aggregate level is the one that integrates soil properties that are directly related to soil sustainability. The aim of this study was to determine the effect of different dose of sewage sludge and an annual legume on the structural recovery of a degraded Alfisol. Sludge was added to soil at 0, 15, 30 and 60 t ha -1 in treatments with and without yellow serradela (Ornithopus compressus L.). After 6 months, the following structural indicators were identified: aggregate distribution, water aggregate stability and bulk density (Da). Results showed that the higher the sludge dose the higher the proportion of macroaggregates and their stability, whereas Da decreased. In spite of the short-term study, data showed that there was a positive effect when amendments were combined with O. compressus L. It demonstrated that degradation is likely to be reversed, thus giving to soil more physical support.

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“…Sludge acts as a source of essential crop nutrients (Smith and Tibbett, 2004;Ferreiro-Domínguez et al, 2011), stimulates microbial activity (Boyle and Paul, 1989;Lakhdar et al, 2010), immobilises toxic elements in soil (Neunhäuserer et al, 2001), improves soil structure, and minimises soil erosion and runoff (Ojeda et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Municipal sludge as source of nitrogen and phosphorus in perennial pasture <i>Eragrostis curvula</i> production: Agronomic benefits and environmental impacts

Tesfamariam¹,

Annandale²,

Steyn³

et al. 2013

WSA

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Land application of sludge has been shown to improve soil properties and aid crop growth, but the possibility of constituent nutrients such as nitrogen and phosphorus reaching environmentally toxic levels has caused governing authorities to set limits to how much sludge can be applied to agronomic land. The high nitrogen utilisation potential of pasture grasses suggests that more sludge can be used in this cropping system without the risk of excess nitrates. This study investigates the effect of exceeding the South African sludge application limit on hay yield, soil nitrates and phosphorus. Field plots were arranged in a complete block design comprising 4 replications of 4 treatments planted to Eragrostis curvula. The treatments consisted of 0, 4, 8 and 16 Mg•ha -1 anaerobically digested sludge. Soil samples were collected before treatment application and at the end of each growing season for N, P, NO 3 -, NH 4 + , and Bray-1P analyses. Plant samples were collected at flowering stage for hay yield and N and P uptake determination. Statistical analyses were conducted using analysis of variance (ANOVA) and general linear model (GLM) procedures of Windows SAS 9.0 to evaluate the effect of sludge application rates on hay yield. Results over 4 growing seasons indicate that exceeding the recommended limit increased hay yield by 4% in a dry season (11.7 vs. 12.36 Mg•ha ) and also increased nitrogen uptake by 15%. Sludge applied at double the recommended limit did not cause the accumulation of nitrate and ammonium in the soil, however, both total and Bray-1P were doubled. The study shows that the potential long-term environmental risk of doubling the sludge application rate norm would be from labile P accumulation in the soil profile despite a sludge P:Fe molar ratio of less than unity.

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The Effect of Compost and Sewage Sludge on Soil Biologic Activities in Salt Affected Soil

Cited by 59 publications

References 23 publications

Sewage Sludge Amendment Combined with Green Manuring to a Coastal Mudflat Salt-Soil in Eastern China: Effects on Soil Physicochemical Properties and Maize Yield

Sewage Sludge Amendment Combined with Green Manuring to a Coastal Mudflat Salt-Soil in Eastern China: Effects on Soil Physicochemical Properties and Maize Yield

STRUCTURAL REMEDIATION OF AN ALFISOL BY MEANS OF SEWAGE SLUDGE AMENDMENTS IN ASSOCIATION WITH YELLOW SERRADELA (Ornithopus compressus L.)

Municipal sludge as source of nitrogen and phosphorus in perennial pasture <i>Eragrostis curvula</i> production: Agronomic benefits and environmental impacts

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