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459 results for “organic C”
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Research ArticleOpen accessEvery word in the titleThe Correlations Between Mercury Speciation and Dissolved Organic Matter in the Sediment of the Red SeaM. A. Wedyan, F. A. Ababneh, S. Al-RousanThis study addresses the correlations between Hg and organic matter in recent sediment; samples were collected from the Gulf of Aqaba, Red Sea coasts (oligotrophic regions) during 2010. In the present study TOC analyzer was used to determine Total Organic Carbon (TOC) and Total Nitrogen (TN) concentrations and the total amount of mercury (HgT) in sediment samples were analyzed by … …American Journal of Environmental Sciences, Vol. 8, Issue 4 · 21 Jun 2012 · 6,799 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEffects of Land Use Practices on the Organic Carbon Content, Cation Exchange Capacity and Aggregate Stability of Soils in the Catchment ZonesMosayeb Heshmati, Arifin Abdu, Shamshuddin Jusop, Nik Muhammad MajidProblem statement: Land use practice leads to changes in the physico-chemical properties of soils, such as Soil Organic Carbon (SOC), Cation Exchange Capacity (CEC) and Soil Aggregate Stability (SAS) that cause soil erosion. Approach: Merek catchment, Iran suffers from land degradation due to poor land use practice. A study was carried out with the objectives: (i) to determine soil nutrient … …American Journal of Applied Sciences, Vol. 8, Issue 12 · 25 Oct 2011 · 8,726 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleRoot Elongation, Root Surface Area and Organic Acid by Rice Seedling Under Al3+ and/or H+ StressA. Elisa Azura, J. Shamshuddin, C.I. FauziahProblem statement: Under acidic condition, Al3+ is the most common species in solution. An experiment was conducted to study the effects of Al and/or pH on rice seed germination, root morphology and organic acids release. This study was conducted at ambient temperature in Malaysia. Approach: Two experiments were conducted: (1) Rice seeds undergoing germination were exposed to 0.5 mM CaCl2 … …American Journal of Agricultural and Biological Sciences, Vol. 6, Issue 3 · 4 Aug 2011 · 9,530 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEnhancing Bioconversion Efficiency of the Earthworm Eudrilus Eugeniae (Kingberg) by Fortifying the Filtermud Vermibed using an Organic NutrientK. Vasanthi, K. Chairman, J. Savarimuthu Michael et al.Problem statement: Rapid urbanization and population growth are largely responsible for very high increasing rate of solid waste in the urban areas, its proper management and recycling is major problems of Municipal Corporation. Conversion of industrial wastes in to beneficial vermicompost not only solves solid waste accumulation but also yield highly nutritive organic manure. Approach: Enhancing the efficiency of earthworm … …OnLine Journal of Biological Sciences, Vol. 11, Issue 1 · 6 Jul 2011 · 8,723 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEvaluation of Some Organic Pollutants Transport into the Shallow Groundwater and Surface Water of Jiaxing Landfill AreaSouleymane Keita, Zhonghua Tang, Shaogang Dong, Yuehua JiangProblem statement: Hangjiahu regions belong to the Yangtze River Delta region in Zhejiang Province in China. The vast majority of this region is flat, so surface and groundwater both have a low flow rate. With the rapid economic development of the area, a large number of industrial and domestic garbage are generated. These landfill or garbage are exposed and stacked. … …American Journal of Applied Sciences, Vol. 6, Issue 12 · 31 Dec 2009 · 8,288 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleFarmers' Perception about the Extension Services and Extension Workers: The Case of Organic Agriculture Extension Program by PROSHIKAMd. Asaduzzaman Sarker, Yoshihito ItoharaProblem statement: Need of agricultural information is the basic necessity for the farmers as it plays a pivotal role in enlightening them, raising their level of knowledge and eventually help in their decision making process regarding farming activities. Extension workers with their extension services are doing this noble work. PROSHIKA a renowned NGO in Bangladesh is promoting organic agriculture among … …American Journal of Agricultural and Biological Sciences, Vol. 4, Issue 4 · 31 Dec 2009 · 8,279 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleResponse of Root Properties to Tripartite Symbiosis between Lucerne (Medicago sativa L.), Rhizobia and Mycorrhiza Under Dry Organic Farming ConditionsM. R. Ardakani, G. Pietsch, A. Moghaddam et al.Problem statement: It is generally considered that root turnover is a major contributor to organic matter and mineral nutrient cycles in organic managed agroecosystems. Approach: This study designed to investigate whether microbial activity could affect on root properties of Lucerne in an organically managed field under dry weather conditions. The trial was laid out as a factorial experiment in the … …American Journal of Agricultural and Biological Sciences, Vol. 4, Issue 4 · 31 Dec 2009 · 8,508 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleDistribution of β-Glucosidase Activity within Aggregates of a Soil Amended with Organic FertilizersSaeid Hojati, Farshid NourbakhshProblem statement: Distribution pattern of enzyme activities in soil aggregate size classes as affected by organic amendments is not well understood. Approach: A study was conducted to evaluate the effects of repeated annual application of Cow Manure (CM), Sewage Sludge (SS) and Municipal Solid Waste Compost (MSW) on the distribution of β-Glucosidase (βG) activity within aggregates of a soil. Soil … …American Journal of Agricultural and Biological Sciences, Vol. 4, Issue 3 · 30 Sep 2009 · 8,185 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleAdsorption Study of Several Hydrophobic Organic Contaminants on an Aquifer MaterialBarbara Ruffino, Mariachiara ZanettiProblem statement: Aim of the present research was to determine coefficient of partition KD between soil and groundwater for five hydrophobic organic pollutants (benzene, chlorobenzene, trichloroethylene-TCE, perchloroethylene-PCE and toluene) in an Italian aquifer material characterized by a low organic carbon content (fOC = 0.00262) by means of laboratory batch tests. Initial aqueous concentrations (quite different among the five compounds) were … …American Journal of Environmental Sciences, Vol. 5, Issue 4 · 31 Aug 2009 · 7,368 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleElectroosmotic Phenomena in Organic SoilsAfshin Asadi, Bujang B.K. Huat, M. M. Hassim et al.Organic soils or peat represent an accumulation of disintegrated plant remains which have been preserved under condition of incomplete aeration and high water content. In order to develop a fundamental understanding of electroosmotic phenomena in peat, initially microelectrophoresis studies were carried out to conceptualize the electrokinetic phenomena. Then electroosmosis experiments were conducted on rigid cube samples containing 0.0001 M NaCl-water … …American Journal of Environmental Sciences, Vol. 5, Issue 3 · 30 Jun 2009 · 7,103 accessesView PDFCite