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Rıdvan Kızılkaya - One of the best experts on this subject based on the ideXlab platform.
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The effects of various Organic Wastes applied into eroded soil on dehydrogenase enzyme activity
Current Research Topics in Applied Microbiology and Microbial Biotechnology, 2009Co-Authors: Tugrul Yakupoglu, şuheyda Hepsen, Nutullah Özdemir, Rıdvan KızılkayaAbstract:It is known that, Organic Wastes added to soil improve many soil properties. Bio-solid (BIO), tea production Wastes (TEW) and tobacco production Wastes (TOW) are some Organic Wastes used for this target. The objective of our study was to find out the effects of these Organic matter sources on dehydrogenase enzyme activity (DHA) in different levels of eroded soils. To determine different soil erosion levels (slightly, moderately and severely), erosion ratio (ER) and structural stability index (SSI) parameters were used. ER values of slightly, moderately and severely eroded soils were determined as 5.36, 6.65 and 12.17 while their SSI values were determined 78.3, 77.8, and 68.7 respectively. Vertic calciudoll samples used in this research were taken from surface (0 to 20 cm depth) located on agricultural areas of Samsun, Northern Turkey. This area has been used as agricultural activity for a long time. This study was conducted by applying four different doses of BIO, TEW and TOW (0, 2, 4 and 6 %, basis dry weight) into eroded soils under greenhouse condition. Each treatment was replicated three times in a split block design. After eighteen weeks incubation period, DHA was determined in all pots. According to analysis results, relation between erosion level and DHA were found as negative. TEW and TOW were increased DHA values in all erosion levels contrast to itself control application. The effects of different Organic Wastes on DHA were increasing depended on application dose. Additionally, BIO application was increased DHA with 2 % doses whereas it was decreasing DHA with 4 % and 6 % doses. These results were found statistically significant at P
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dehydrogenase activity in lumbricus terrestris casts and surrounding soil affected by addition of different Organic Wastes and zn
Bioresource Technology, 2008Co-Authors: Rıdvan KızılkayaAbstract:Abstract A laboratory experiment was conducted to determine the effects of different Organic Wastes such as wheat straw (WS), tea production waste (TEW), tobacco production waste (TOW), cow manure (CM) and hazelnut husk (HH) on dehydrogenase activity (DHA) in casts of earthworm Lumbricus terrestris and surrounding soil using 5% (dry weight) application rates associated with increasing doses of Zn (0, 50, 100, 250, 500 and 1000 μg g −1 ). Twenty one days after treatment of Zn and Organic Wastes, the DHA analyses were carried out on collected casts and soil samples. In general, all Organic waste treatments influenced the DHA, the contents of Organic C, N and available Zn in earthworm L. terrestris casts and the surrounding soil in comparison with the control. DHA in casts exceeded that in the surrounding soil without Zn additions. After Zn application of 50 μg Zn g −1 in all Organic waste treatments and the control, the DHA level in casts and surrounding soil increased significantly. It decreased by application rates of 100, 250, 500 and 1000 μg Zn g −1 consecutively in all Organic waste applications. The addition of Wastes with low C/N ratio and high Zn content (TEW, TOW, CM) inhibited the DHA in both cast and surrounding soil.
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microbiological properties in earthworm cast and surrounding soil amended with various Organic Wastes
Communications in Soil Science and Plant Analysis, 2007Co-Authors: Rıdvan Kızılkaya, şuheyda HepsenAbstract:Abstract Changes produced in the microbiological properties of earthworm Lumbricus terrestris casts and surrounding soil by the addition of various Organic Wastes such as wheat straw (WS), tea production waste (TEW), tobacco production waste (TOW), cow manure (CM), and hazelnut husk (HH) were evaluated in an incubation experiment. Twenty‐one days after Organic waste treatment, analyses of microbial biomass (Cmic), basal soil respiration (BSR), metabolic quotient (qCO2), and enzyme activities (dehydrogenase, catalase, β‐glucosidase, urease, alkaline phosphatase, and arylsulphatase) were carried out on collected cast and soil samples. Addition of Organic Wastes to the soil increased values of Cmic, BSR, and enzyme activities in soil and earthworm casts, indicating activation by microorganisms. Except for catalase activity, these values of microbiological parameters in casts were higher than in surrounding soil at all waste treatments and control. The addition of Organic Wastes caused a rapid and significant...
M. Sayeed Akhtar - One of the best experts on this subject based on the ideXlab platform.
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Effects of Organic Wastes,Glomus intraradices andPseudomonas putida on the growth of tomato and on the reproduction of the Root-knot nematodeMeloidogyne incognita
Phytoparasitica, 2008Co-Authors: Zaki A. Siddiqui, M. Sayeed AkhtarAbstract:Effects of Organic Wastes (biosolids, horse manure, sawdust and neem leaf litter [NLL]), an arbuscular mycorrhizal (AM) fungus Glomus intraradices , and a plant growth-promoting rhizobacterium Pseudomonas putida , were studied on the growth of tomato and on the reproduction of Meloidogvne incognita. Pseudomonas putida and G. intraradices promoted tomato growth in nematode-infected and nematode-free plants but growth promotion was higher in the infected ones. When P. putida and G. intraradices were applied together, the increase in tomato growth was greater than when either agent was applied alone. Of the Organic Wastes, NLL was better in improving tomato growth of nematode-infected plants followed by biosolids, horse manure and sawdust. Combined use of NLL with P. putida plus G. intraradices was best in improving growth of the infected plants. Root colonization by P. putida was increased more when inoculated with G. intraradices than when inoculated singly. Of the Organic Wastes, use of sawdust with P. putida caused a greater increase in root colonization by fluorescent pseudomonads followed by NLL, horse manure and biosolids. Nematode parasitism had an adverse effect on root colonization by P. putida . Inoculation of P. putida and Organic Wastes increased the root colonization caused by the AM fungus. P. putida was better in reducing galling and nematode multiplication than G. intraradices , whereas use of the two together was better than that of either of them alone. Among Organic Wastes, NLL was better in reducing galling and nematode multiplication followed by biosolids, horse manure and sawdust. Combined use of NLL with P. putida plus G. intraradices was better in reducing galling and nematode multiplication than any other treatment.
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Effects of Organic Wastes, Glomus intraradices and Pseudomonas putida on the growth of tomato and on the reproduction of the Root-knot nematode Meloidogyne incognita
Phytoparasitica, 2008Co-Authors: Zaki A. Siddiqui, M. Sayeed AkhtarAbstract:Effects of Organic Wastes (biosolids, horse manure, sawdust and neem leaf litter [NLL]), an arbuscular mycorrhizal (AM) fungusGlomus intraradices, and a plant growth-promoting rhizobacteriumPseudomonas putida, were studied on the growth of tomato and on the reproduction ofMeloidogvne incognita. Pseudomonas putida andG. intraradices promoted tomato growth in nematode-infected and nematode-free plants but growth promotion was higher in the infected ones. WhenP. putida andG. intraradices were applied together, the increase in tomato growth was greater than when either agent was applied alone. Of the Organic Wastes, NLL was better in improving tomato growth of nematode-infected plants followed by biosolids, horse manure and sawdust. Combined use of NLL withP. putida plusG. intraradices was best in improving growth of the infected plants. Root colonization byP. putida was increased more when inoculated withG. intraradices than when inoculated singly. Of the Organic Wastes, use of sawdust withP. putida caused a greater increase in root colonization by fluorescent pseudomonads followed by NLL, horse manure and biosolids. Nematode parasitism had an adverse effect on root colonization byP. putida. Inoculation ofP. putida and Organic Wastes increased the root colonization caused by the AM fungus.P. putida was better in reducing galling and nematode multiplication thanG. intraradices, whereas use of the two together was better than that of either of them alone. Among Organic Wastes, NLL was better in reducing galling and nematode multiplication followed by biosolids, horse manure and sawdust. Combined use of NLL withP. putida plusG. intraradices was better in reducing galling and nematode multiplication than any other treatment.
Matthieu Bravin - One of the best experts on this subject based on the ideXlab platform.
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Putative role of trace elements and soil chemical properties in the induction or mitigation of rhizotoxicity in soils amended with Organic Wastes
2013Co-Authors: Marie Hutte, Nantenaina Rabetokotany-rarivoson, Géraud Daniel Moussard, Laurent Thuriès, Matthieu BravinAbstract:Soil contamination by trace elements may occur afte r recycling Organic waste on agricultural lands. This paper focused on the impact of trace elements and soil chemical properties in rhizotoxicity in soils amended with Organic Wastes. An ecotoxicologi cal approach using biological tests was carried out in order to ease the determination of the effec ts of trace elements contaminated soils on the root elongation. Our results revealed that (i) the degre e of rhizotoxicity was depending on the type of Organic Wastes and the application rate, (ii) the c orrelation between root elongation and Cu in soil solution was not significant. This first assessment suggested the complex interac tion between trace elements and soil chemical properties. (Resume d'auteur)
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Temporal dynamic of trace elements in soils amended with contaminated Organic Wastes
2011Co-Authors: Marie Tella, Matthieu Bravin, Emmanuel DoelschAbstract:Applications of so-called Organic Wastes are recommended in agriculture where the Organic matter content of soil is low. However, before applying Organic Wastes to soil it is essential to assess that these materials do not pose any hazard to humans, animals, or to the environment. This study aims at evaluating the dynamic of trace elements in a soil amended with various Organic Wastes combining incubation and DGT techniques. Soil/waste samples were incubated to evaluate the impact of Organic waste application on trace elements exchangeable fractions by exploring the DGT response. Organic Wastes were incorporated at 80 t ha-1 of dry matter. During Organic waste mineralization, we have detected increase in the exchangeable fractions of trace elements, which was more noticeable for Zn and Pb than for Cu, Cd, Ni and Cr. (Resume d'auteur)
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Investigation of trace elements content in Organic Wastes used for market gardening
2010Co-Authors: Marie Tella, Matthieu Bravin, Sophie Chataing, Emmanuel DoelschAbstract:While agricultural recycling is recognized as an alternative to stockpiling or incineration, the benefits of the use of Organic Wastes as fertilizers and soil amendments should be assessed together with potential environmental and toxicological impacts due to the presence of trace elements (TE). While these considerations are common in Northern countries, issues and problems involved in waste management are increasing in developing countries. Within the framework of the ANR project ISARD, designed to set up methods to ensure suitable agricultural intensification based on the recycling of Organic Wastes, this study investigated the contents of major chemical elements and TE in various composts, from sewage sludge, household refuses, animals manure and garden rubbish, applied on market-garden crops on the outskirts of cities in various countries (Saint Denis, La Reunion, France; Majunga, Magacascar; and Dakar, Senegal). Organic waste contents are various and depend on the geographic origin and type of Wastes (e.g. Pb = 0.82-2100 mg kg-1 dry matter). Half of the Organic Wastes that were examined exhibit very high TE concentrations, and are above the limits set by European legislation and found in the literature data for Organic Wastes designed for market gardening. Size fractionation of Organic Wastes exhibited a fairly large enrichment in TE in the smaller solid fraction (0.2-20 ?m) in comparison with raw Wastes. This result suggests that TE were potentially associated with Organic matter in the 0.2-20 ?m fraction, which is the most reactive to degradation of micro-organisms. The use of such Organic Wastes for market gardening could consequently be potentially harmful with respect to TE phytoavailability and phytotoxicity. However, total concentrations of TE in Organic Wastes and of TE dynamic in amended soils will be crucial to predict TE phytoavailability. (Texte integral)
Samir Kumar Khanal - One of the best experts on this subject based on the ideXlab platform.
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rethinking Organic Wastes bioconversion evaluating the potential of the black soldier fly hermetia illucens l diptera stratiomyidae bsf
Waste Management, 2020Co-Authors: K C Surendra, Jeffery K Tomberlin, Arnold Van Huis, Jonathan A Cammack, Lars Henrik L Heckmann, Samir Kumar KhanalAbstract:Population growth and unprecedented economic growth and urbanization, especially in low- and middle-income countries, coupled with extreme weather patterns, the high-environmental footprint of agricultural practices, and disposal-oriented waste management practices, require significant changes in the ways we produce food, feed and fuel, and manage enormous amounts of Organic Wastes. Farming insects such as the black soldier fly (BSF) (Hermetia illucens) on diverse Organic Wastes provides an opportunity for producing nutrient-rich animal feed, fuel, Organic fertilizer, and biobased products with concurrent valorization of Wastes. Inclusion of BSF larvae/pupae in the diets of poultry, fish, and swine has shown promise as a potential substitute of conventional feed ingredients such as soybean meal and fish meal. Moreover, the bioactive compounds such as antimicrobial peptides, medium chain fatty acids, and chitin and its derivatives present in BSF larvae/pupae, could also add values to the animal diets. However, to realize the full potential of BSF-based biorefining, more research and development efforts are necessary for scaling up the production and processing of BSF biomass using more mechanized and automated systems. More studies are also needed to ensure the safety of the BSF biomass grown on various Organic Wastes for animal feed (also food) and legalizing the feed application of BSF biomass to wider categories of animals. This critical review presents the current status of the BSF technology, identifies the research gaps, highlights the challenges towards industrial scale production, and provides future perspectives.
Mohsen Jalali - One of the best experts on this subject based on the ideXlab platform.
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Effects of some industrial and Organic Wastes application on growth and heavy metal uptake by tomato (Lycopersicum esculentum) grown in a greenhouse condition
Environmental Science and Pollution Research, 2020Co-Authors: Marzieh Taghipour, Mohsen JalaliAbstract:In this study, pot experiments were conducted to determine the effects of industrial solid Wastes (ISWs) (ceramic, stone, and sugar factory Wastes) and Organic Wastes (rice husk and wheat straw) on growth and heavy metals uptake by tomato ( Lycopersicum esculentum ) plants. The soil was treated with 10% of ISWs and 5% of Organic Wastes. The fractionation of heavy metals also has been studied in all treated soils. It was observed that the addition of ISWs in soil increased heavy metal contents in all fractions. The addition of Organic Wastes to control and treated soils decreased exchangeable fraction and increased Organic matter and residual fractions. Following the ceramic factory and stone cutting waste addition, tomato yield significantly decreased as compared to control soil. The application of ISWs caused an increase in heavy metal contents of tomato plants. In control and ISWs-treated soils, dry matter yield of tomato grown in the presence of wheat straw was significantly restricted, while the application of rice husk increased tomato shoot and root dry weight. Results of experiments indicated that the application of both Organic Wastes significantly decreased heavy metal uptake by tomato plants. The investigation of health risk index (HRI) values indicated that in these industrial areas, potential health risk by intake of heavy metals from tomato for both adults and children generally assumed to be safe. The values of HRI were lesser when rice husk was applied to the soil. In general, these results highlighted that the application of rice husk in soils contaminated with ISWs increased the growth and yield of tomato and reduced the heavy metal toxicity for tomato consumption in contaminated soils.
