biodiversity of beneficial and nonbeneficial soil microflora

... analysis of As, Fe, Ca, Mg and P contents of the filtrate The amount of Ca and Mg adsorbed per gram of soil was calculated from the difference of Ca and Mg concentration in the initially added Ca and ... (mg/L) (mg/L) of Ca and Mg added Amount of Ca and Mg added (mg/L) (a) (b) Adsorbed Ca, Mg (mg/g) Fig - Concentration profiles of (a) As and (b) Fe in leachate with the addition of Ca and Mg in different ... Concentrations of Ca and Mg Fig 1(a) clearly shows a decrease in the leaching of As with an increase in the added amount of Ca and Mg In the absence of Ca and Mg, leached As was 51.1 µg/L - 331 - Journal of...

Ngày tải lên: 05/09/2013, 10:15

... height and biomass of Brassica juncea L.) with increasing concentration of Cu in soil The accumulation of heavy metal in plant tissues of Brassica juncea L is reflected the concentration in soil ... accumulation in plant, and also the role of phosphate in reducing the uptake of Cu by Brassica juncea L 2.2 Sampling and chemical analysis Plant and soil samples were taken and analysed at the harvest time ... Cu in soil and plant tissues, Cu2+ (HNO3 0.43N) in soil was determined by Atomic Absorption Spectroscopy (AAS) Materials and methods Results and discussion 2.1 Pot experiments Alluvial soils...

Ngày tải lên: 14/03/2014, 15:20

... Influence of tillage on nutrient uptake and yield of corn Agron J 1985;77:763᎐768 He QB, Singh BR Effect of organic matter on the distribution, extractability and uptake of cadmium in soils J Soil ... the higher contents of Co, Pb and Zn in top soil under ZT were related to higher OM and Al contents and lower pH in those soils The comparison between both cropped treatments and the pasture showed ... hypothesize that concentrations of trace elements will increase and stratify in those soils However, as a consequence of the recent introduction of zero tillage and the lack of fertilization history,...

Ngày tải lên: 15/03/2014, 23:22

... yield of the 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 ... concentrations of As and Cd was used in the experiment Physico-chemical properties of the soil were measured by the standard methods of soil chemical analysis (NIAST, 1988) and were shown in Table Soil ... of 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...

Ngày tải lên: 16/03/2014, 00:07

... result of a number of factors, including crop, temperatures of greenhouse and ventilation air, humidity and amount of supplemental lighting, all of which a€ected the rate of transpiration and thus ... application soil column study experimental matrix, showing number of columns assigned to each treatment of sludge and pH Sludge and pH treatments Sludge type Soil type Initial soil pH Arkport sandy ... polyethylene tub A soil sample was then taken, preweighed masses of sludge were added and the soil and sludge were thoroughly mixed The soil/ sludge mixture was then returned to the soil column and ®rmly...

Ngày tải lên: 16/03/2014, 00:07

... The particles size distribution of the soil indicated very sandy soils under the control, sandy under the cattle manure, sandy on the top horizon (0 - 22 cm) and sandy-clay on the sub horizon (22 ... Sci Technol Table Initial soil physical and chemical (carbon, nitrogen and organic matter content) properties at - 22 and 22 - 55 cm soil layers in the ferrallitic soil of the Toumodi area, Côte ... Total nitrogen (Nt) and organic nitrogen (Norg) were calculated as the sum of Kjeldahl-N and NO3 N and as the difference between Nt and the inorganic nitrogen (sum of NH4+-N and NO3-N), respectively...

Ngày tải lên: 23/03/2014, 21:20

... the EPA Office of Water/Office of Science and Technology/Standards and Applied Science Division To conduct the assessment required estimates of several factors The factors and the sources of the ... Humans, Terrestrial and Avian Wildlife, and Aquatic Life to Dioxins and Furans from Disposal and Use of Sludge from Bleached Kraft and Sulfite Pulp and Paper Mills Office of Pesticides and Toxic Substances, ... over-estimation of the cancer risks of dioxin, went on to become the leading voice of a revisionist camp of environmental journalism 33 Dioxin from Pulp and Paper and Lead in Soil at Mining Sites 24 of four...

Ngày tải lên: 24/03/2014, 05:20

... susceptibility of soil to erosion, potential erosivity of rainfall and runoff, and soil protection afforded by plant cover (Renard et al., 1997) In practice, the Revised Universal Soil Loss Equation ... Vietnam; and to determine peak discharge of these watersheds by the predictors of initial flow, rainfall, and rain intensity c) to identify the roles of forest cover on soil erosion prevention; and ... interception of precipitation, evapotranspiration and physical properties of soil (Shukla et al., 2003) Soil water retention which is an important soil hydrological property is influenced by soil structure...

Ngày tải lên: 03/04/2014, 12:22

... of common region (CR) nucleotide sequences of the DNA-A (CRA) and database(CRB) of ACMV (A) and EACMV Alignment of common region (CR) nucleotide sequences of the DNA-A (CRA) and DNA-B (CRB) of ... Africa and of the distribution of viruses the location of the completely location of CMG clones types of viruses well as the localizationinlay map of Tanzania showingsimilar to these clones Map of ... fragment of about 800 nts not of EACMV origin, covering AC2-AC3 and the C-terminus of AC1 (Fig 8A) ii) Comparisons of the B components of EACMCV The EACMCV West African isolates had only a stretch of...

Ngày tải lên: 18/06/2014, 22:20

... of common region (CR) nucleotide sequences of the DNA-A (CRA) and database(CRB) of ACMV (A) and EACMV Alignment of common region (CR) nucleotide sequences of the DNA-A (CRA) and DNA-B (CRB) of ... Africa and of the distribution of viruses the location of the completely location of CMG clones types of viruses well as the localizationinlay map of Tanzania showingsimilar to these clones Map of ... fragment of about 800 nts not of EACMV origin, covering AC2-AC3 and the C-terminus of AC1 (Fig 8A) ii) Comparisons of the B components of EACMCV The EACMCV West African isolates had only a stretch of...

Ngày tải lên: 20/06/2014, 04:20

... proposed and carried out projects of studies on Phytophthora diseases such as quick and low death of black pepper, quick death of durian, bud root of pineapple, wilt death of litchi, downy mildew of ... 4.0 3.1.2 Effect of different petal baits on trap and isolation of Phytophthora Using of different color of flower as baits to trap and isolate Phytophthora conidia (Table 2) All of petals could ... isolation from soil and root of several crops Solution Crops Durian Aquilaria Cafe Soil Total of soil samples 27 20 33 Sample isolated (%) 22.2 25.0 18.1 The Phytophthora isolation from soil ranged...

Ngày tải lên: 22/06/2014, 12:20

... gradient of species richness illustrates the complex evolutionary history of global biodiversity, and many studies have placed it in the context of geological history and rates of speciation and extinction ... mexicana and is ancestral Separation between group (composed of New World/American Foliosae species) and group (composed of Old World/African and Asian Foliosae and American, Asian and African ... processes involved in the evolution and diversification The Dynamical Processes of Biodiversity Case Studies of Evolution and Spatial Distribution of the Vanilla genus and concluded that Vanilla must...

Ngày tải lên: 28/06/2014, 08:20

... degradation of ecosystems and the loss of biodiversity Our project on “The Economics of Ecosystems and Biodiversity is about addressing this second challenge, and making a comprehensive and compelling ... Economics of Ecosystems and Biodiversity (TEEB), aims to promote a better understanding of the true economic value of ecosystem services and to offer economic tools that take proper account of this ... standard of the lives of the poor, alleviating poverty and hunger Services from, wetlands and forests MDG 3: Promote gender equality and empower women Fuelwood and water: adequate availability and and...

Ngày tải lên: 28/06/2014, 19:20

... Province, Thailand, 2004 Advances in Geotechnical Earthquake Engineering – Soil Liquefaction and Seismic Safety of Dams and Monuments 28 Fig 40 Scouring of Foundation Soils and Severing of Building’s ... Engineering – Soil Liquefaction and Seismic Safety of Dams and Monuments Due to the steep and rugged topography in the affected mountainous region, wide spread landslides (see Figs and 10) have ... an overview of the characteristics of the earthquake and tsunami; and damage reconnaissance including: geotechnical and structural damage, liquefaction, damage to dykes and levees, and bridges...

Ngày tải lên: 29/06/2014, 09:20

... assessing and monitoring soil biodiversity The lack of awareness of the importance of soil biodiversity in society further enhances the problem of the loss of ecosystem services due to loss of soil biodiversity ... risks of soil biodiversity loss are, and how soil biodiversity can be restored, protected and conserved Considering the specific nature of soil biodiversity as compared to that of aboveground biodiversity, ... by soil organisms Soil microorganisms actually only represent 0.1% of soil by mass, and occupy less than 5% of the total soil volume (Ingham, Trofymow et al 1985) Soil consists of a mosaic of...

Ngày tải lên: 06/07/2014, 08:20

... 75 kg of K2O + 500 kg of MMC Treatment (T2): 50 kg of N + 90 kg of P2O5 + 75 kg of K2O + 500 kg of MMC Treatment (T3): 100 kg of N + 90 kg of P2O5 + 75 kg of K2O + 500 kg of MMC RESULTS AND DISCUSSION ... that one kg of MMC helps generate 0.7 kg of rice With the total input of 500 kg of MMC for one of rice, additional 350 kg of rice is expected Taking into account the price of MMC and of rice, financially ... MMC contributes also to improvement of soil fertility and the increase of micro-organism populations in both the alluvial soil of Gia Lam and the degraded soil of Hiep Hoa However, MMC showed a...

Ngày tải lên: 06/08/2014, 19:20

... fluctuations of soil moisture and many pests Localities characteristic of central uplands of the Hrubý Jeseník Mts., where natural spruce stand, spruce stand influenced by silvicultural activities and ... occurred in soil sorption properties and soil buffer system The aim of this study was to compare the correctness in linear and multivariate models of the soil system data MATERIAL AND METHODS ... analysis of variance (MANOVA) was applied CLU and MANOVA were used to evaluate the closeness of the nutrient status of the spruce stands and to assess the closeness of chemical properties of the...

Ngày tải lên: 07/08/2014, 03:22

... patterns of soil temperature (a) and soil water content (b) in the oak, mixed and beech stands (zones without moisture treatment, n = 3) and comparison of soil water content variations in the moist and ... variables: stand, moisture treatment, the interaction between stand and moisture treatment, and the two random eects date and location The models were all tted with the MIXED procedure of the SAS software ... moist Soil respiration in pure and mixed stands 145 Table III Parameters and R2 of the Q10 functions (Eq (1)) estimated for the dierent soil respiration contributions in the three stands (standard...

Ngày tải lên: 07/08/2014, 16:20

... scenarios and 2) (Tab VIIB) In relative values, at 120 cm, it represented a change of 64, +12, and 18 % for N, K, Ca and Mg respectively for scenario and of 59, +29, +5 and % for N, K, Ca and Mg ... times for N, and times for K, Ca and Mg) but rather low in absolute value (15 kg of N, kg of K, 4.4 kg of Ca and 1.8 kg of Mg for the less conservative scenario) Extra drainage of Al was about ... concentration of Al3+ (+52 àmolc L1 at 15 cm and +19 àmolc L1 at 30 cm) and NO (+37 àmolc L1 at 15 cm and +102 àmolc L1 at 30 cm) in the soil upper layers, but not at 30 and 120 cm The concentration of...

Ngày tải lên: 07/08/2014, 16:20

... layer of subsoil composed of gravel and sand sediments of quaternary origin laying above impermeable clay sediments of tertiary origin The forest stand was composed of oak (Quercus robur L., 78% of ... the model tree (V T.tree) and of the stand (VT.stand) at the area of Astand Atree = Astand (VT.tree / VT.stand) crown ground plan, Actmax or similarly by the ground plan of root systems, Artmax, ... point of decreased water availability “pda” (U soil = –2 × 10 Pa) and (2) wilting point “wp” (U soil = –15 × 105 Pa) Amount of water within the soil profile of the system (i.e., the given size of...

Ngày tải lên: 08/08/2014, 14:21