scholarly journals Structural and Predicted Functional Diversities of Bacterial Microbiome in Response to Sewage Sludge Amendment in Coastal Mudflat Soil

Biology ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 1302
Author(s):  
Yunlong Li ◽  
Yimin Wang ◽  
Chao Shen ◽  
Lu Xu ◽  
Siqiang Yi ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Bacterial Communities ◽  
Nutrient Deficiency ◽  
Community Diversity ◽  
Amended Soils ◽  
Nutrient Contents ◽  
Carbon And Nitrogen ◽  
Bacterial Microbiome ◽  
Sludge Application ◽  
Modified Soil

The study investigated the influence of sewage sludge application at rates of 0 (CK), 30 (ST), 75 (MT), and 150 (HT) t ha−1 to mudflats on bacterial community diversity and predicted functions using amplicon-based sequencing. Soils under sewage sludge treatments, especially the HT treatment, exhibited lower pH, salinity and higher nutrient contents (C, N, and P). Moreover, restructured bacterial communities with significantly higher diversities and distinct core and unique microbiomes were observed in all sewage sludge-amended soils as compared to the control. Specifically, core bacterial families, such as Hyphomicrobiaceae, Cytophagaceae, Pirellulaceae Microbacteriaceae, and Phyllobacteriaceae, were significantly enriched in sewage sludge-amended soils. In addition, sewage sludge amendment significantly improved predicted functional diversities of core microbiomes, with significantly higher accumulative relative abundances of functions related to carbon and nitrogen cycling processes compared to the unamended treatment. Correlation analyses showed that modified soil physicochemical properties were conducive for the improvement of diversities of bacterial communities and predicted functionalities. These outcomes demonstrated that sewage sludge amendment not only alleviated saline–sodic and nutrient deficiency conditions, but also restructured bacterial communities with higher diversities and versatile functions, which may be particularly important for the fertility formation and development of mudflat soils.

scholarly journals Responses of Rhizosphere Fungal Communities to the Sewage Sludge Application into the Soil

2019 ◽  
Vol 7 (11) ◽  
pp. 505 ◽  
Author(s):  
Katarína Ondreičková ◽  
Marcela Gubišová ◽  
Michaela Piliarová ◽  
Miroslav Horník ◽  
Pavel Matušinský ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Fungal Community ◽  
18S Rdna ◽  
Mycorrhizal Fungi ◽  
Fungal Diversity ◽  
Municipal Wastewater ◽  
Environmental Changes ◽  
Community Diversity ◽  
Rdna Sequencing ◽  
Sludge Application

Due to the increasing sewage sludge production in the world and problems with its disposal, an application of sludge to the soil appears to be a suitable solution considering its fertilizer properties and ability to improve the soil physical conditions. On the other hand, the sludge may also contain undesirable and toxic substances. Since soil microorganisms are sensitive to environmental changes, they can be used as indicators of soil quality. In this study, we used sewage sludge (SS) from two municipal wastewater treatment plants (SS-A and SS-B) in the dose of 5 t/ha and 15 t/ha in order to determine possible changes in the fungal community diversity, especially arbuscular mycorrhizal fungi (AMF), in the rhizosphere of Arundo donax L. Rhizosphere samples were collected in summer and autumn for two consecutive years and the fungal diversity was examined using terminal restriction fragment length polymorphism and 18S rDNA sequencing. Fungal alpha diversity was more affected by SS-A than SS-B probably due to the higher heavy metal content. However, based on principal component analysis and ANOSIM, significant changes in overall fungal diversity were not observed. Simultaneously, 18S rDNA sequencing showed that more various fungal taxa were detected in the sample with sewage sludge than in the control. Glomus sp. as a representative of AMF was the most represented. Moreover, Funneliformis in both samples and Rhizophagus in control with Septoglomus in the sludge sample were other representatives of AMF. Our results indicate that the short-term sewage sludge application into the soil does not cause a shift in the fungal community composition.

Effects of Linear Alkylbenzene Sulfonates (LASs) in Sewage Sludge–Amended Soils on Nutrient Contents of Broccoli Plants

2006 ◽  
Vol 37 (15-20) ◽  
pp. 2605-2614 ◽  
Author(s):  
Joaquin Moreno‐Caselles ◽  
Daniel Prats ◽  
Raul Moral ◽  
Maria Dolores Perez‐Murcia ◽  
Aurelia Perez‐Espinosa ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Amended Soils ◽  
Linear Alkylbenzene ◽  
Nutrient Contents ◽  
Linear Alkylbenzene Sulfonates

Recycling mineral nutrients to farmland via compost application

2006 ◽  
Vol 53 (2) ◽  
pp. 111-118 ◽  
Author(s):  
Y.Y. Liu ◽  
M. Ukita ◽  
T. Imai ◽  
T. Higuchi
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Plant Uptake ◽  
Nutrient Deficiency ◽  
Mineral Nutrients ◽  
Heavy Metal Accumulation ◽  
Municipal Solid Wastes ◽  
Amended Soils ◽  
Compost Application ◽  
Chemical Conditions

Increased cultivation of farmland has resulted in nutrient deficiency and consequently fertility degradation of soils. This research examined the application of composted wastes in terms of the feasibility and effectiveness of recycling plant essential minerals. Minerals in composts (derived from sewage sludge, livestock excrement, and municipal solid wastes, respectively) and in amended soils were observed. Ca/Mg ratios in amended soils and the effect of compost applications (mineral nutrients and heavy metals) on plant uptake were also studied. Results showed that composts, especially those made from sewage sludge and livestock excrement, were richer in mineral nutrients but also contained more heavy metals than untreated soil. The increase in some elements and plant-growth-essential Ca/Mg ratios were found in amended farmlands, implying that compost applications have made up for the nutrient deficiency and have adjusted chemical conditions of the soil. The soil contamination from heavy metals was noticeable. However, some results showed that the large existence of mineral nutrients and heavy metals in soils has caused no significant increase in the plant uptake of elements. The controlled composting process and farmland uses are believed necessary for reducing the heavy metal accumulation in agricultural plants.

scholarly journals Effect of Sewage Sludge Compost Usage on Corn and Faba Bean Growth, Carbon and Nitrogen Forms in Plants and Soil

Agronomy ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 628
Author(s):  
Hassan E. Abd Elsalam ◽  
Mohamed E. El- Sharnouby ◽  
Abdallah E. Mohamed ◽  
Bassem M. Raafat ◽  
Eman H. El-Gamal
Keyword(s):  
Organic Matter ◽  
Sewage Sludge ◽  
Plant Growth ◽  
Total Nitrogen ◽  
Faba Bean ◽  
Residual Effect ◽  
Growth Period ◽  
Nitrogen Forms ◽  
Amended Soils ◽  
Nitrogen Levels

Sewage sludge is an effective fertilizer in many soil types. When applied as an amendment, sludge introduces, in addition to organic matter, plant nutrients into the soil. When applied for cropland as a fertilizer, the mass loading of sewage sludge is customarily determined by inputs of N and/or P required to support optimal plant growth and a successful harvest. This study aims to examine the changes in organic matter contents and nitrogen forms in sludge-amended soils, as well as the growth of corn and faba bean plants. The main results indicated that there were higher responses to the corn and faba bean yields when sludge was added. Levels of organic carbon in soil were higher after maize harvest and decreased significantly after harvesting of beans, and were higher in sludge amended soils than unmodified soils, indicating the residual effect of sludge in soil. NO3−-N concentrations were generally higher in the soil after maize harvest than during the plant growth period, but this trend was not apparent in bean soil. The amounts of NH4+-N were close in the soil during the growth period or after the maize harvest, while they were higher in the soil after the bean harvest than they were during the growth period. Total nitrogen amounts were statistically higher in the soil during the growth period than those collected after the corn harvest, while they were approximately close in the bean soil. The total nitrogen amount in corn and bean leaves increased significantly in plants grown on modified sludge soil. There were no significant differences in the total nitrogen levels of the maize and beans planted on the treated soil.

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