Abstract Trace metals, including heavy can be harmful to the biota and human beings. This leads study accumulation of those elements in soils. In Pampean region (Argentina) this knowledge is scarce. Our objectives were (i) determine trace metal concentration soils Buenos Aires City agricultural areas, (ii) start establish soil metals baseline concentration, (iii) find relationships between properties Topsoil samples taken on farms along an arc 50 250 km away from metropolis. All studied...

Remediation strategies are capable to mitigate negative effects of heavy metals (HMs) on soils. The distribution cooper (Cu), zinc (Zn), and chromium (Cr) was evaluated in a contaminated soil after adding biosolid compost (BC) phosphate fertilizer (PF). A greenhouse assay sequential extraction procedure were performed determine the fractionation HM remediated soil. In BC treatment, among 4 6% Cu associated with humic substances. Without amendments application, Zn solubility increased by 15.4...

The soils of the Pampas are thought to be generally non-contaminated but there is growing evidence trace element accumulation at some specific sites. goal this study was measure current levels main Potentially Toxic Elements (PTE) in top horizon and soil profiles so that we would establish baseline concentrations these elements. Eighty-eight three were sampled. samples acid digested. Arsenic, boron, barium, cadmium, cobalt, chromium, copper, lead, manganese, mercury, molybdenum, nickel,...

Biosolids compost is a good organic amendment but immature can exhibit phytotoxic behavior which be attributed to different toxic substances. Our objective was determine the phytotoxicity of: i) Biosolids; ii) Mix of biosolids and wood sawdust sampled day after composting started; iii) The same material at end thermophilic stage; iv) cured compost; v) cow manure vi) horse A germination bioassay carried out using Lolium perenne (ryegrass) seeds: root growth percentage were determined as well...

The objective of this work was to evaluate the affects application composted biosolids on accumulation heavy metals (Cd, Cu, Ni, Pb and Zn) in lettuce leaves. Pots containing different proportions (0 100%) were used grow plants under greenhouse conditions. Dry fresh weight, leaf area Cd, Zn uptake determined after harvest. It found that dry matter productions significantly lower control treatment. addition caused a 20 40% increase biomass accumulation. Cd concentrations leaves below...

Copper (Cu), zinc (Zn) and chromium (Cr) are pollutants that usually accumulated in soils. Their toxicity can be decreased by applying amendments. We proposed to evaluate changes Cu, Zn, Cr availability, due the application of amendments, through chemical analysis phytotoxicity tests. The test was carried out using species belonging Sesbania genus; plant parameters were measured 48, 72, 96, 168 hours after start incubation. treatments included enriched soil, addition biosolid compost triple...

The effects of biosolid compost and phytoremediation applied on the leaching cadmium, copper, lead zinc, through different horizons a superficially polluted soil were determined. was from Province Buenos Aires, Argentina. It contaminated with cadmium zinc. Leaching columns used three horizons: A: 0.12 m A horizon, B: horizon A+0.15 Bt C: horizon+0.15 horizon+0.13 BC horizon. treatments (1). Witness (contaminated soil), (2). soil+plants (Plant), (3). soil+50 Mg has-1 (Compost) (4)....

This research aims to assess the effect of application biosolids compost and phytoremediation on mobility total biodisponibles (DTPA) fractions cadmium, copper, lead, zinc from different horizons a superficially contaminated soil. Leaching experiment in soil columns was proposed. Treatments contemplated biosolid phytoremediation. Two destructive samplings were performed. Total DTPA trace metals identified each horizon. The overall performance various elements its forms show greater...

Biosolids (B) may contain various types of environmental pollutants, which can exert phytotoxic effects in plants. The effect aqueous extracts on seed germination and the primary root growth discaria (Discaria americana) obtained from different soil-application rates B a mixture incinerated were investigated. objective was to evaluate potential use for stabilization B-amended soils. Ryegrass (Lolium perenne L.) used comparison. Compared ryegrass, relative (RSG) significantly lower discaria....

The aim of using wastes in agriculture is to achieve a sustainable cycle which these will turn into organic sources agricultural production. specific objective was study the composition compost made with different sewage sludge/bulking agent ratios and establish most suitable stability or maturity analytical index for compost. Three piles volume proportions (biosolids:sawdust) were performed. Measurements pH, cationic-exchange capacity (CEC), total carbon (Ct), nitrogen (Nt), ignition losses...

Summary Soilless potting substrates are increasingly used in greenhouse production of bedding plants replacing soil as growth media. These usually consist a mixture organic materials like peat or pine bark and inorganic substances such perlite, vermiculite sand. Among other possibilities, compost made from municipal industrial sludges solid wastes can effectively replace both soils they imply little risk to human the environment. The objective this study was evaluate effects different...

In this research, we have studied the accumulation of four PTEs (Cadmium, copper, lead and zinc) during after biosolid application, in two soils with different clay content their eventual movement depth.The study was performed Province Buenos Aires, Argentina, on a Typic Argiudoll Hapludoll.Treatments were: control at doses 14 Mg ha -1 year (dry matter).There were types sampling: (i) Topsoil samp ling, 0-0.15 m depth, taken throughout five years (ii) Depth soil sampling regular intervals...

Changes in P fractions using Hedley's sequential fractionation of organic and inorganic soil P, were studied soils covering a wide range developmental stages original materials. A greenhouse experiment was performed order to make an exhaustive uptake by Lolium perenne study phosphorus mobilization from different fractions. Samples obtained at 30, 60 90 days sowing, with two fertilization rates added as KH2PO4. The exhaustion produced plants resulted patterns according characteristics. For...

Na Argentina, a aplicação superficial de dejecto líquido é técnica mais utilizada, embora com alto risco perdas amônia. Essas emissões podem ser reduzidas por meio diferentes métodos aplicação, mas seus impactos no sistema solo-planta têm sido pouco explorados. Assim, este trabalho teve como objetivo avaliar os efeitos dejetos líquidos suínos: acidificados (AS), incorporados (IS) e superficiais (SS) na qualidade do solo produtividade uma cultura trigo, em comparação fertilização mineral (MF)...

Cover crops are well known for their positive effects on erosion processes, soil organic matter, physical properties, weed populations and nitrate (NO₃) leaching. In this work, we evaluated the fate of nitrogen (N) from fertilizer in maize (<i>Zea mays</i> L.) then ryegrass (<i>Lolium multiflorum</i>) as cover crop, conditions Argentine Pampas. To end, a field experiment was carried out at School Agriculture, University Buenos Aires, Argentina (34°36′ S, 58°29′ W). The design...