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Impact of Sewage Sludge as Organic Manure on Some Soil Properties, Growth, Yield and Nutrient Contents of Cucumber Crop  [PDF]
A.H.A. Hussein
Journal of Applied Sciences , 2009,
Abstract: The present study was conducted in two field experiments with two soil types (sandy and calcareous soils) under greenhouse conditions at the Agricultural and Veterinary Training and Research Station of KFU, Al-Hassa area. The objective of the present study was to investigate the effects of different rates of sludge on some soil properties, growth, yield and nutrients status of leaves and fruits of cucumber plant. The experimental soils have sandy and sandy loam textures. All experimental plots (6 m2 area) cultivated with cucumber. Soil application of sewage sludge, at rates of 0 (control, with no sewage sludge), 25, 50, 75, 100 and 125 t ha-1 was used in the present study. Sewage sludge was mixed with top 30 cm surface layer of each plot, two month before planting of cucumber. The experiments were conducted in a randomized complete block design with 3 replications. The experimental plots received the same agricultural practices as recommended. The obtained results revealed that application of sewage sludge significantly altered the chemical properties of soil. Soil Electrical Conductivity (EC), soluble cations (calcium, magnesium, sodium and potassium), soluble anions (chloride and sulphate), available phosphorous and micronutrients (iron, manganese, copper and zinc) and heavy metals (cadmium, cobalt, lead and nickel) were increased in sandy and calcareous soils with increasing sewage sludge application rate. While, the soil reaction (pH) and HCO3ˉ contents were decreased as a result of sludge application. Also, application of sewage sludge improved physical properties of sandy and calcareous soils. It decreased the soil bulk density and increased saturation water content, porosity and organic matter content. Application of sewage sludge improved leaves and fruit contents of macro- and microelements of cucumber plant grown in sandy and calcareous soils. Also, the number of fruits and yield of cucumber were increased with increasing the rates of sewage sludge application. The highest level of application of sludge has a highest effect on the yield of cucumber plants. Generally, application of sewage sludge by mixing it with top 30 cm soil layer was found to be more effective in improving soil physical, chemical and fertility conditions. Moreover, using of sewage sludge as organic manure is considered as a source of nutrients that required for plant which led to increase the growth and the yield of cucumber crop.
Sewage sludge application to agricultural land as soil physical conditioner
Maria, Isabella Clerici De;Chiba, Márcio Koiti;Costa, Alan;Berton, Ronaldo Severiano;
Revista Brasileira de Ciência do Solo , 2010, DOI: 10.1590/S0100-06832010000300038
Abstract: water resource quality is a concern of today's society and, as a consequence, low pollutant wastewaters and sludges are being increasingly treated, resulting in continuous production of sewage sludge. sewage sludge (ss) can be used as soil physical conditioner of agricultural or degraded lands, due to its organic c component. the objective of this research was to evaluate the long-term ss effects on soil physical quality of properties such as bulk density, porosity, permeability and water retention of degraded soils treated with annual ss applications. the ss rates were calculated according to the crop n demand. the field experiment consisted of three treatments: mineral fertilization, 10 and 20 mg ha-1 of ss (once and twice the ss quantity to meet the maize n demand, respectively), in annual applications to the surface layer of a eutroferric red latosol. ss reduced bulk density, increased macroporosity and decreased microporosity after the third application, but did not significantly alter the soil permeability and physical quality as measured by the s index in the surface layer.
Effects of sewage sludge and sewage sludge compost amendment on soil properties and Zea mays L. plants (heavy metals, quality and productivity)
VACA, Rocío;LUGO, Jorge;MARTíNEZ, Ricardo;ESTELLER, María V.;ZAVALETA, Hilda;
Revista internacional de contaminación ambiental , 2011,
Abstract: the use of organic wastes in agriculture can improve the soil's productive capacity, and physical and chemical characteristics. this study evaluated the effects of sewage sludge, sewage sludge compost and inorganic fertilizer applications on nickel, copper and zinc contents in soil and corn grains (zea mays l); maize productivity, and grain nutritional quality. sewage sludge and sewage sludge compost at 18 mg ha-1 and a mineral fertilizer (n-p-k) with a formulation of 150-75-30 were applied. significant differences were observed in organic matter, phosphorus and zinc content between sewage sludge-soil and compost-soil, and inorganic fertilizer-soil (p ≤ 0.05). copper concentration was significantly high in compost-soil (p ≤ 0.05). productivity in compost-soil and sewage sludge-soil mixtures was higher than in inorganic fertilizer-soil. grain quality, measured by relative percentage of starch, total nitrogen, protein, acid detergent fiber and neutral detergent fiber were adequate for human consumption. application of sewage sludge or compost did not increase heavy metal concentrations in grain with respect to inorganic fertilizer-soil.
Comparison of Sewage Sludge and Town Refuse as Soil Conditioners for Sandy Soil Reclamation
E. M. El-Naggar,A. M. El-Ghamry
Pakistan Journal of Biological Sciences , 2001,
Abstract: A pot experiment was carried out to compare the effects of sewage sludge (S) and town refuse(T) additions on plant growth and yield components of wheat (Triticum sativa L.), some soil physico - chemical properties and available nutrients in reclaiming sandy soil. The organic residues were applied at rates of 5%, 10%, and in different combinations with N, P, K mineral fertilizers. The addition of sewage sludge, town refuse and their interactions at low rates produced the striking changes in sandy soil. An improvement in soil physical and chemical properties was noticed with increasing addition of organic residues. Town refuse furnished better results than the sewage sludge. A significant increase in grain and straw yield of wheat and plant N, P, K content was found in organic residues treated soils as compared with the control. The treatment of T+NPK was better than the other treatments. A significant decrease in soil bulk density and increase in soil porosity and available NPK contents in soil was observed with organic residues as compared to the control. The investigation exhibited that town refuses were more affective than sewage sludge at different rates. The sewage sludge and town refuse can be used as soil conditioners to improve the soil health and hence the crop yield. At the same time this would help to reduce the environmental contamination.
Impacts of Sewage Sludge in Tropical Soil: A Case Study in Brazil  [PDF]
Wagner Bettiol,Raquel Ghini
Applied and Environmental Soil Science , 2011, DOI: 10.1155/2011/212807
Abstract: A long-term assay was conducted to evaluate the environmental impacts of agriculture use of sewage sludge on a tropical soil. This paper describes and discusses the results obtained by applying a interdisciplinary approach and the valuable insights gained. Experimental site was located in Jaguariúna (SP, Brazil). Multiyear comparison was developed with the application of sewage sludge obtained from wastewater treatment plants at Barueri (domestic and industrial sewage) and Franca (domestic sewage), S?o Paulo State. The treatments were control, mineral fertilization, and sewage sludge applied based on the N concentration that provides the same amount of N as in the mineral fertilization recommended for corn crop, two, four, and eight times the N recommended dosage. The results obtained indicated that the amount of sewage sludge used in agricultural areas must be calculated based on the N crop needs, and annual application must be avoided to prevent overapplications. 1. Introduction Sewage sludge contains organic matter and is rich in macro- and micronutrients, so the agricultural and forestry disposal is widely recommended [1–3]. However, sewage sludge also contains contaminants (heavy metals, organic compounds, and human pathogens) which should be considered when it is utilized in agricultural and forestry soils [1, 4]. Researches about sewage sludge disposal in soil are focused on its effects on soil fertility, plant development, and contamination by heavy metals and organic compounds. However, applications of this residue modify biological, chemical, and physical properties of the soils, consequently the dynamics of its microbiota, organic matter decomposition, nutrient cycling, physical structure of the soil, and pest and plant disease severity [4–10]. The studies on sewage sludge are conducted mainly under temperate conditions, with few studies in tropical climate. The few studies in tropical conditions are conducted mainly to assess the nutritional effects and problems with heavy metal from sewage sludge application. These studies are rarely performed by determining long-term environmental impacts of agricultural use of sewage sludge. Due to the fact that sewage sludge amount in Brazil is rapidly increasing, since its production was initiated twenty years ago, it is extremely important to gain knowledge and to learn about the long-term effects of sewage sludge applications on soil chemical, biological, and physical properties. Therefore, the objectives of this paper are to present and discuss the long-term effects of continued application of sewage
Hydraulic conductivity and soil-sewage sludge interactions
Ferreira, Silvio Romero de Melo;Oliveira, Joaquim Teodoro Rom?o de;Messias, Arminda Saconi;Silva, Hannelore Alves e;Nascimento, Aline Elesb?o do;Feitosa, Maria Célia Alves;
Revista Brasileira de Ciência do Solo , 2011, DOI: 10.1590/S0100-06832011000500011
Abstract: one of the main problems faced by humanity is pollution caused by residues resulting from the production and use of goods, e.g, sewage sludge. among the various alternatives for its disposal, the agricultural use seems promising. the purpose of this study was to evaluate the hydraulic conductivity and interaction of soil with sandy-silty texture, classified as spodosols, from the experimental station itapirema - ipa, in goiana, state of pernambuco, in mixtures with sewage sludge from the mangueira sewage treatment station, in the city of recife, pernambuco at rates of 25, 50 and 75 mg ha-1. tests were conducted to let water percolate the natural saturated soil and soil-sludge mixtures to characterize their physical, chemical, and microstructural properties as well as hydraulic conductivity. statistical data analysis showed that the presence of sewage sludge in soils leads to an increase of the < 0.005 mm fraction, reduction in real specific weight and variation in optimum moisture content from 11.60 to 12.90 % and apparent specific dry weight from 17.10 and 17.50 kn m-3. in the sludge-soil mixture, the quartz grains were covered by sludge and filling of the empty soil macropores between grains. there were changes in the chemical characteristics of soil and effluent due to sewage sludge addition and a small decrease in hydraulic conductivity. the results indicate the possibility that soil acidity influenced the concentrations of the elements found in the leachate, showing higher levels at higher sludge doses. it can be concluded that the leaching degree of potentially toxic elements from the sewage sludge treatments does not harm the environment.
THE EFFECT OF COMPOST AND SEWAGE SLUDGE ON SOIL BIOLOGIC ACTIVITIES IN SALT AFFECTED SOIL
Lakhdar,Abdelbasset; Scelza,Rosalia; Scotti,Riccardo; Rao,Maria A; Jedidi,Naceur; Gianfreda,Liliana; Abdelly,Chedly;
Revista de la ciencia del suelo y nutrición vegetal , 2010, DOI: 10.4067/S0718-27912010000100005
Abstract: saline soil was amended with 13.3 and 26.6 g kg-1 of municipal solid waste (msw) compost or sewage sludge, and arylsulphatase (ary), phosphatase (pho), dehydrogenase (deh), (β-glucosidase ((β-glu), urease (ure) and catalase (cat) activities as well as physical-chemical properties were determined after 70 day of incubation under laboratory conditions. msw compost and sewage sludge significantly improved soil physical-chemical properties, especially carbon and nitrogen contents. accordingly, overall enzyme activities were substantially promoted in presence of both amendments and the higher increases were measured at 13.3 g kg-1 of msw compost (increases by 107%, 43%, 20%, 11%, and 148% for, deh, (3-glu, pho, ure, and cat, respectively). lower beneficial effects occurred at 26.6 g kg-1 of sewage sludge possibly because of the increased salinity or the presence of trace elements by sewage sludge application. as a general response, msw compost supplied at 13.3 g kg-1 seems to be a useful strategy to enhance biologic activities of salt-affected soil.
THE EFFECT OF COMPOST AND SEWAGE SLUDGE ON SOIL BIOLOGIC ACTIVITIES IN SALT AFFECTED SOIL  [cached]
Abdelbasset Lakhdar,Rosalia Scelza,Riccardo Scotti,Maria A Rao
Revista de la Ciencia del Suelo y Nutrición Vegetal , 2010,
Abstract: Saline soil was amended with 13.3 and 26.6 g kg-1 of Municipal Solid Waste (MSW) compost or sewage sludge, and arylsulphatase (ARY), phosphatase (PHO), dehydrogenase (DEH), (β-glucosidase ((β-GLU), urease (URE) and catalase (CAT) activities as well as physical-chemical properties were determined after 70 day of incubation under laboratory conditions. MSW compost and sewage sludge significantly improved soil physical-chemical properties, especially carbon and nitrogen contents. Accordingly, overall enzyme activities were substantially promoted in presence of both amendments and the higher increases were measured at 13.3 g kg-1 of MSW compost (increases by 107%, 43%, 20%, 11%, and 148% for, DEH, (3-GLU, PHO, URE, and CAT, respectively). Lower beneficial effects occurred at 26.6 g kg-1 of sewage sludge possibly because of the increased salinity or the presence of trace elements by sewage sludge application. As a general response, MSW compost supplied at 13.3 g kg-1 seems to be a useful strategy to enhance biologic activities of salt-affected soil.
Agricultural utilization of sewage sludge: effect on the chemical and physical properties of soils and on the productivity and recovery of degraded areas/ Uso agrícola do lodo de esgoto: influência nas propriedades químicas e físicas do solo, produtividade e recupera o de áreas degradadas  [cached]
Graziela Moraes de Cesare Barbosa,Jo?o Tavares Filho
Semina : Ciências Agrárias , 2006,
Abstract: This study is an overview of the agricultural recycling of sewage sludge and its impact on the chemical and physical properties of soils and on the productivity and recovery of degraded areas. Sewage sludge contains some of the essential plant nutrients (nitrogen, phosphorous, and micronutrients); it also has variable humidity content and is rich in organic matter. Sewage sludge also acts as a soil conditioner, improving soil structure and aggregation, thus decreasing density and increasing aeration of soils.Sewage sludge can complement other crop fertilization techniques by reducing the use of chemical fertilizers and fertilization costs as it increases nutrient availability in soils. As a result, the sludge can enhance plant development and productivity. Sludge application in degraded areas leads to a rapid growth of gramineous and leguminous plants. Plants growing in sludge-applied areas tend to be more vigorous and to cover larger areas (percentage); they also tend to have higher productivity and a better development of the root system. Soil recovery by liming and mineral fertilization can also lead to vegetation regrowth; however, the poor physical and biological soil conditions can deteriorate the cover plants before the soil is actually recovered. Sewage sludge must be processed before being used and cannot be applied directly to agricultural or forested land until biological treatments reduce the sludge organic content and promote organic matter stabilization. In the State of Paraná, Brazil, the direct application of sewage sludge on horticultural and other products that are ingested raw, is not recommended. Sludge fertilization is recommended for corn, wheat, sugarcane, sorghum, fruitiferous plants, and for forest plant species used to recover degraded areas. State regulations determine the levels of heavy metals allowed in the sludge and the maximum dosage of 50 ton biosolid matter/ha, for a 10-year period. Objetivou-se com esta revis o avaliar o panorama geral da reciclagem agrícola do lodo de esgoto e suas influências nas propriedades químicas e físicas do solo, na produtividade e na recupera o de áreas degradas. O lodo de esgoto possui alguns dos nutrientes essenciais às plantas (nitrogênio, fósforo e micronutrientes), apresenta teores de umidade variável e é rico em matéria organica. Além disso, atua como um condicionador do solo, melhorando a estrutura e o estado de agrega o das partículas do solo, diminuindo a densidade e aumentando a aera o do solo. Dessa forma, deve ser visto como um complemento à aduba o das culturas, podendo contr
The Cumulative Effects of Sewage Sludge Compost on Raphanus sativus L: Growth and Soil Properties  [PDF]
Vanessa N. Lima, Ricardo V. Trótski O. Silva, Patrícia Nunes, Paulo H. da Silva, Kyriale Morant, Rosileide F. S. Andrade, Aline E. Nascimento, Galba M. Campos-Takaki, Arminda Saconi Messias
Green and Sustainable Chemistry (GSC) , 2016, DOI: 10.4236/gsc.2016.61001
Abstract: The main goal of this research study was to establish the physicochemical characteristics of sewage sludge, and the nutrients needed to enhance the properties of soil with a view to exploiting were potential for agriculture. The example used was the cultivation of radish (Raphanus sativus). The findings are intended as a contribution towards making agriculture sustainable. This study was carried out to assess the response of radish (Raphanus sativus L.) to doses of sewage sludge applied in medium texture soils, and the socioeconomic contributions that such cultivation of radish would make. Levels of 0.25 and 75 ton/ha of sewage sludge plus the equivalent dose of 25 ton/ha of sewage sludge vermin compost by California Red were used after making a randomized experimental design with three replicates. 30 days after sowing radish seeds, the following data were collected: the number of leaves per plant (NLP); plant height (PH in cm); root diameter (RD) and tubercle production (TP ton/ha). In addition, the pH, EC-electric conductivity (EC), and soil organic matter (SOM) were determined. Statistical analysis showed that 25 and 50 tons/ha gave the best results for the parameters assessed. The estimated increase in family mean income from selling radish crops fertilized with sewage sludge is around 17%.
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