nitrogen phosphorus and potassium in soil
Effect of cd and as in soil on growth availability to plant
... As and Cd on the growth of chinese cabbage, radish and lettuce and to establelish the critical level of elements in chinese cabbage, radish and lettuce Materials and Methods A silty loam soil ... significantly decreased with increasing soil As levels and the critical As levels in soils were estimated to be 6.79 mg kg-1 for loam and 2.75 mg kg-1 for sandy loam Aller et al (1990) investigated the rice ... edible part of chinese cabbage, radish, and lettuce grown at the Cd treated soils Contents of As and Cd in edible part of chinese cabbage, radish, and lettuce The contents of As and Cd in agricultural...
- 9
- 379
- 0
Control of Dioxins (and other Organochlorines) from the Pulp and Paper Industry under the Clean Water Act and Lead in Soil at Superfund Mining Sites: Two Case Studies in EPA''''s Use of Science potx
... Dioxin from Pulp and Paper and Lead in Soil at Mining Sites i Abstract This paper discusses EPA’s acquisition and use of science in addressing dioxins (and other organochlorines) from the pulp and ... coordinating role and concentrated on the risks from effluents, sludge, and occupational exposures The EPA coordinator was a Dioxin from Pulp and Paper and Lead in Soil at Mining Sites 25 Dwain Winters, ... Smelting and Refining Company, a subsidiary of the Anaconda Company, had a lead mill and smelter at Tooele After the war, lead-zinc mining production in Utah declined In 1958, US Smelting and International...
- 65
- 641
- 0
chemical equilibria and kinetics in soils
... EQUlLmRIA AND KINETICS IN SOILS (1.17) where Zi is the valence of the metal or ligand whose total molality is m Ti and the sum is over all metals (including hydrogen) and ligands (including hydroxide) ... mathematical expression for In 'Y ± (or In 'YM and In 'YL) should include both linear and bilinear terms in the molalities of all metals and ligands (or all charged species) in an aqueous solution ... Congress Cataloging -in- Publication Data Sposito, Garrison, 1939Chemical equilibria and kinetics in soils / Garrison Sposito p em Rev and expanded ed of: Thermodynamics of soil solutions 1981 Includes...
- 277
- 255
- 0
PRINCIPLES, APPLICATION AND ASSESSMENT IN SOIL SCIENCE ppt
... clay minerals as affected by phosphorus and increase in CEC reduces the leaching In soils with pH above 5.0, increases in acidity results in destruction of minerals, i.e exchangeable Ca2+ and in ... during soil weathering Soil P exists in inorganic and organic forms Inorganic P forms are associated with amorphous and crystalline sesquioxides, and calcareous compounds Organic P forms include ... relatively insoluble and less mobile Cr(III) form predominates and it geneally occurs as insoluble hydroxides and oxides (McGrath, 1995) Phosphorus states in soil and soil pH can determine the similarity...
- 406
- 487
- 0
INTERRELATIONSHIPS BETWEEN MICROORGANISMS AND PLANTS IN SOIL doc
... Library of Congress Cataloging -in- PublicationData Interrelationshipsbetween microorganismsand plants in soil (Developments in soil science ; 18) Bibliography: p Includes index Soil microbiology-Cong ... INTERRELATIONSHIPS BETWEEN MICROORGANISMS AND PLANTS I N SOIL Developments in Soil Science 18 Interrelationships between Microorganisms and Plants in Soil Proceedings of an International Symposium Liblice ... ANTARCTICA; SOILS WEATHERING PROCESSES AND ENVIRONMENT 15 M A M U L D E R S REMOTE SENSING IN SOIL SCIENCE 17 K K U M A D A CHEMISTRY OF SOIL ORGANIC MATTER IN L'ANCL'RA cirid F KLJNC I Ectirors) INTERRELATIONSHIPS...
- 501
- 898
- 0
Báo cáo lâm nghiệp: "Sulphur and nitrogen concentrations and fluxes in bulk precipitation and throughfall in the mountain and highland spruce stands in the Czech Republic" docx
... handling and dedicated work in the field and in the laboratory and K Jackson for language revision References Andersson F., Persson T (1988): Liming as a countermeasure against acidification in ... important input into the mountainous catchments of the Czech Republic In: Proceedings of the International Conference on Interdisciplinary Approaches in Small Catchment Hydrology: Monitoring and Research ... Canopy and soil retention of nitrogen deposition in a mixed boreal forest in Eastern Finland Water Air Soil Pollution, 105: 165–174 Plíva K (1987): Typological classification system “ÚHUL” Brandýs...
- 13
- 413
- 0
terrestrial biotic ligand model (tblm) for copper, and nickel toxicities to plants, invertebrates, and microbes in soils
... fetida) and springtails (Folsomia candida)) and microbes (potential nitrification rate and glucose induced respiration) in the same soils that were used for the corresponding speciation studies, and ... Cu, and Ni ecotoxicities in soils This TBLM will link the soil chemistry, the soil solution chemistry, and the interactions with an organism, with respect to Cu and Ni To so the TBLM will integrate ... activities in soil solutions This remains the main challenge in applying the BLM to soil systems (Antunes et al., 2006) In the next section, the literature on the metal speciation in soils is discussed...
- 341
- 324
- 0
Analysis of nitrogen fixation and transport in soybean (glycine max (l ) merr ) using nitrogen isotopes as tracer
... symbiotic nitrogen fixation activity is influenced by many biotic and abiotic factors (Sprent and Minchin, 1983) The nitrogen fixation rate is highest at the end of flowering and during the pod filling ... in the center, which consists of the mosaic of small uninfected cells and large infected cells The infected cells contain O2 binding protein "leghemoglobin (Lb)" that keep an important role in ... for studying of nitrogen fixation in plants By using 15 N stable isotope, researchers have found the pathways of nitrogen compounds assimilating and transporting in plants The results indicated...
- 106
- 238
- 0
Báo cáo lâm nghiệp: "Influence of flooding on growth, nitrogen availability in soil, and nitrate reduction of young oak seedlings (Quercus robur L.)" docx
... to a decrease in cytokinin synthesis resulting from a reduction in root tip biomass in flooded seedlings In fact, Dickson [10] underlined the involvement of cytokinin in bud break initiation of ... may have increased nitrate reductase activity in stressed seedlings and occulted the real effect of flooding via nitrogen availability in the soil During flooding, amino acid contents in taproot ... fresh weight and were separately lyophilised before being ground to fine powder 2.5 Nitrate and ammonium determinations Soil mineral nitrogen was extracted by incubating 10 g of fresh soil with...
- 8
- 282
- 1
Báo cáo khoa học: "characterization of phosphorus fractions in natural and fertilized forest soils" potx
... clay minerals and oxides and hydroxides [21] may protect the diester-P in the clay and silt fractions from mineralization and explain the higher diester proportion observed in VR and NF soils ... forms of P in non-fertilized and P-fertilized soils (figure 1) As can be seen in table IV and table V, in FG and VR soils, the concentrations of Pi forms in fertilized soils were lower than in non-fertilized ... signals were determined by integration The mean signal-to-noise ratio was 66 for the most intensive peak and 10 to 14 for the less intensive peaks Total P in soil (PTsoil) and total P in the 0.5 M...
- 10
- 376
- 0
Báo cáo khoa học: "Soil nitrogen mineralization in adjacent stands of larch, pine and oak in central Korea" ppsx
... and Valentine, 1991; Son and Gower, 1992), and are of interest for understanding nutrient cycling and the importance of individual species in ecosystem-scale biogeochemistry (Wedin and Tilman, ... aspen, pine and spruce stands on the same soil type in Minnesota Can J For Res 8, 290-299 Binkley D (1995) The influence of tree species on forest soils-processes and patterns In: Proceedings of ... (soil moisture, temperature and texture) and above- and belowground litter (quantity, quality and timing of inputs) (Aber and Melillo, 1982; Pastor et al, 1987; Wedin and Tilman, 1990; Gower and...
- 8
- 267
- 0
arsenic contamination in soils, water and plants
... SAMPLING COLLECTION AND TESTING Plants, soils and water samples at six locations had been taken in order to quantify the leveling of arsenic contaminant Five sampling locations are within the interesting ... contamination in soil Soil samples from locations, called in corresponding points as bore holes (BH) number, were classified using the Unified Soil Classification System Soil profiles and their ... gold mine The results would give the preliminary informations for planning to use in this area which will be advantageous for managing the agriculture and living area in near future GENERAL INFORMATION...
- 17
- 693
- 0
ARSENIC POLLUTION IN SOIL AND GROUNDWATER OF BANGLADESH
... fine sands, and muds occur at an interval of 3-4.9m (upper muddy layer) Sands are composed of well sorted quartz grains accompanying significant mica flakes Tourmaline and zircon are ... to be confined to the intermediate aquifer (30-45 m depth) 4.0 million Tubewells in Bangladesh Supplying Drinking water to the people and among them 1.12 million Tubewells are contaminated with ... horizon 27.7m and 28.9 m shown in SiO2/Al2O3, Al2O3/TiO2 ratios, which may be due to influx of coarse sands Table Rare Earth Elements And Other Trace Elements Found In Core Sample In Samta INAA No...
- 7
- 361
- 0
THE NITRATE NITROGEN POLLUTION AND THE NITROGEN REMOVAL BY PADDY FIELD IN AGRICULTURAL AREA
... of Water and Environment Technology, Vol.3, No.2, 2005 fields and forests on a plateau and a wetland which includes a paddy field in the lowlands Initial investigation showed that certain areas ... generation of algae and nitrogen removal is thus sustainable In order to explore the mechanism of nitrogen removal, experiments were conducted by sampling soil in thin layers In the paddy rice ... nitrate nitrogen concentration in the 0-1cm layer is shown in Fig.6, 1-2 cm layer is shown in Fig.7, 2-3 cm layer in Fig.8 and 5- cm layer is shown in Fig.9 At 0-1 cm layer, nitrogen removal in the...
- 4
- 489
- 0
Nitrogen Dynamics and Biomass Production in a Vertical Flow Constructed Wetland Cultivated with Forage Rice and their Mathematical Modeling
... Jury and Horton (2004), linear and instantaneous adsorption were assumed, and the concentration of nitrogen in soil interstitial water, CNH,i, is calculated as - 254 - Journal of Water and Environment ... obtain better prediction of biomass production and water treatment and a detailed understanding of the nitrogen dynamics in VF constructed wetlands CONCLUSIONS In the experimental pots replicating ... pot, and it penetrated into the soil zone and flowed out from the bottom of the pot Soil water samplers (DIK-8391, Daiki Rika Kogyo, Japan) were installed at depths of 10 cm and 20 cm in the soil...
- 16
- 581
- 1
Effect of Coagulant on Phosphorus Uptake and Release in EBPR Process
... shown in Fig In the anaerobic phase, PO4-P concentration increased to a certain value and remained constant in each run In Run1-1, PO4-P concentration in the anaerobic phase was higher than that in ... Water and Environment Technology, Vol 8, No.4, 2010 Phosphorus removal in SBR1 The PO4-P concentration in the effluent of SBR1 in Run1-1 to Run1-4 is shown in Fig In Run1-1, the mean and standard ... (components are listed in Table 1) was flowed into each reactor during the influent phase The concentrations of influent BOD, nitrogen and phosphorus were 200 mg/L, 50 mg/L and 5mg/L, respectively...
- 10
- 531
- 0
Báo cáo "The effect of Cu concentration in soil and phosphorous fertilizer on plant growth and Cu uptake by Brassia juncea L. grown on contaminated soils " doc
... water and then dried at 70oC until stabilisation of weight The monitoring indicators for plants growth include plant height and biomass Total Cu in soil and plant tissues, Cu2+ (HNO3 0.43N) in soil ... concentration in soil and Cu content in plant shows a significant positive effect (Fig 1) Table The contents of Cu2+ in soil, Cu content in plant and plant height (fresh weight) Cu2+ in soil Plant ... Cu2+ in soil with plant growth and Cu accumulation in plant The relationship between Cu concentration in soil and biomass of Brassica juncea is presented in Table The highest plant height and...
- 5
- 590
- 1
USEPA REGION 9 TECHNICAL GUIDELINES FOR ACCURATELY DETERMINING VOLATILE ORGANIC COMPOUND (VOC) CONCENTRATIONS IN SOIL AND SOLID MATRICES potx
... or sampling and analysis plan (SAP) Region 9’s guidelines for measuring VOC concentrations in soil and other solid matrices include the following: Samples should be handled as intact soil cores ... Organic Compounds in Soil Subsamples US Army Cold Regions Research and Engineering Laboratory, Special Report 95-5 Hewitt, A.D and J.E Lukash (1996) Obtaining and Transferring Soils for In- Vial Analysis ... should be handled in intact soil cores and stored in hermetically sealed vessels in both the field and the laboratory December 2005 -9- EPA Region Technical Guidelines for Accurately Determining Volatile...
- 10
- 468
- 0
Bioavailability and toxicity of cd to microorganisms and their activities in soil
... of glutamic acid in both sandy and silty loam soils, but not in clay and sandy peat soils (Haanstra and Doelman, 1984) The mineralization of carbon and nitrogen in different soils were related ... cause a 10% decrease in urease activity after week incubation amounted to 150 in sandy loam soil, 360 in silt loam, 950 in clay soil and 1980 in sandy peat soils (Doelman and Haanstra, 1986) The ... the total microbial biomass in the soil (McCann and Cullimore, 1979) and are involved in maintaining soil fertility and oxygen production (Bold and Wynne, 1978) Mineralization of algae releases...
- 15
- 596
- 0
Tìm thêm: hệ việt nam nhật bản và sức hấp dẫn của tiếng nhật tại việt nam xác định các mục tiêu của chương trình xác định thời lượng học về mặt lí thuyết và thực tế điều tra đối với đối tượng giảng viên và đối tượng quản lí khảo sát thực tế giảng dạy tiếng nhật không chuyên ngữ tại việt nam khảo sát các chương trình đào tạo theo những bộ giáo trình tiêu biểu xác định mức độ đáp ứng về văn hoá và chuyên môn trong ct mở máy động cơ rôto dây quấn các đặc tính của động cơ điện không đồng bộ hệ số công suất cosp fi p2 đặc tuyến hiệu suất h fi p2 đặc tuyến mômen quay m fi p2 đặc tuyến dòng điện stato i1 fi p2 động cơ điện không đồng bộ một pha sự cần thiết phải đầu tư xây dựng nhà máy thông tin liên lạc và các dịch vụ phần 3 giới thiệu nguyên liệu từ bảng 3 1 ta thấy ngoài hai thành phần chủ yếu và chiếm tỷ lệ cao nhất là tinh bột và cacbonhydrat trong hạt gạo tẻ còn chứa đường cellulose hemicellulose chỉ tiêu chất lượng theo chất lượng phẩm chất sản phẩm khô từ gạo của bộ y tế năm 2008 chỉ tiêu chất lượng 9 tr 25