scholarly journals Pb-phytoextraction by maize in a Pb-EDTA treated Oxisol

2007 ◽  
Vol 64 (1) ◽  
pp. 52-60 ◽  
Author(s):  
Bruno Fernando Faria Pereira ◽  
Cleide Aparecida de Abreu ◽  
Solange Romeiro ◽  
Ana Maria Magalhães Andrade Lagôa ◽  
Antônio Paz-González
Keyword(s):  
Contaminated Soils ◽  
Dry Matter ◽  
Chelating Agent ◽  
Soil Samples ◽  
Visual Minteq ◽  
Saturation Extract ◽  
High Metal ◽  
Maize Plants ◽  
Plant Shoots ◽  
Very High

One of the most viable strategies to restore metal contaminated soils is the introduction of plants specialized in their accumulation or able to tolerate very high metal concentrations. This research evaluated: i. the maize as a Pb-accumulator plant; ii. the effects of EDTA-chelating agent for Pb-uptake by maize; iii. amending effect of EDTA on the soil Pb-availability using different extracts. Treatments consisted of Pb rates (100; 200; 350; 1,200 and 2,400 mg kg-1) applied to a Rhodic Hapludox in the form of Pb3(NO)2 with (0.5 g kg-1) and without EDTA. Lead concentrations were determined in maize plant shoots. Soil available Pb was obtained using DTPA, Mehlich-3 and saturation solutions methods. Ionic speciation in the soil solution was performed using the software Visual-Minteq. Although a low t value was found (t <0.70), Pb concentration were high (>1,500 mg kg-1 of Pb) in maize shoots regardless of EDTA addition. Maize plants treated with EDTA had lower dry matter yield, mainly due to toxic levels of Fe and Al of the Oxisol. All extracting solutions were effective to determine available Pb in soil samples, but the saturation extract is a more difficult and time consuming procedure. At low and medium Pb levels, the plants grew less on EDTA, therefore the phytoextration process was less efficient. The addition of EDTA to the soil is not recommended with the purpose of increasing Pb absorption by maize plants.

scholarly journals Accumulation of Arsenic by Plants Growing in the Sites Strongly Contaminated by Historical Mining in the Sudetes Region of Poland

2020 ◽  
Vol 17 (9) ◽  
pp. 3342 ◽  
Author(s):  
Agnieszka Dradrach ◽  
Anna Karczewska ◽  
Katarzyna Szopka ◽  
Karolina Lewińska
Keyword(s):  
Plant Species ◽  
Contaminated Soils ◽  
Soil Samples ◽  
Plant Roots ◽  
Soil Parameters ◽  
Historical Mining ◽  
Safe Limit ◽  
Plant Shoots ◽  
Representative Samples ◽  
Extractable Soil

The uptake of As by various plants growing in highly enriched sites was examined in order to identify potential As accumulators and to assess the risk associated with As presence in plant shoots. Representative samples of 13 plant species, together with soil samples, were collected from various sites affected by historical As mining: mine and slag dumps, tailings and contaminated soils with As concentrations in a range 72–193,000 mg/kg. Potentially and actually soluble As forms, extracted with 0.43 M HNO3 and, 1M NH4NO3 were examined in relation to As concentrations in plant roots and shoots. The latter differed strongly among the species and within them and were in the ranges 2.3–9400 mg/kg and 0.5–509 mg/kg, respectively. The majority (over 66%) of plant samples had As shoot concentrations above 4 mg/kg, an upper safe limit for animal fodder. The uptake of As by plants correlated well with total and extractable soil As, though As concentrations in plants could not be predicted based on soil parameters. Equisetum spp. and C. epigejos indicated a particularly strong accumulation of As in shoots, while A. capillaris, and H. lanatus showed a limited As root-to-shoot transfer, apparently associated with species-related tolerance to As.

scholarly journals Phosphorus availability as a function of its time of contact with different soils

2016 ◽  
Vol 20 (11) ◽  
pp. 996-1001 ◽  
Author(s):  
Hemmannuella C. Santos ◽  
Fábio H. T. de Oliveira ◽  
Adailson P. de Souza ◽  
Ignácio H. Salcedo ◽  
Valério D. M. Silva
Keyword(s):  
Dry Matter ◽  
Residual Effect ◽  
Soil Samples ◽  
P Availability ◽  
P Fertilization ◽  
P Content ◽  
Maize Plants ◽  
Macro And Micronutrients ◽  
Labile P ◽  
Different Soils

ABSTRACT Phosphorus (P) availability is related to soil sorption capacity and is relevant to planning P fertilization and evaluating its residual effect. The aim of this work was to evaluate the P availability to maize plants after different incubation times of six soils from Paraíba state. For this, four doses of P (0, 100, 200 and 300 mg dm-3) were applied in samples of six soils for 0, 30, 60, 90, 180, 240 and 360 days. After the incubation time, the soil samples received fertilization with macro and micronutrients and were cultivated with maize for 35 days, when they were harvested and analyzed to verify dry matter and P content in soil. The increase in the time of contact of P with the soil decreased P availability to plants; however, the formation of non-labile P was negligible in most soils. After 360 days of incubation, between 26 and 71% of P applied at the highest dose was recovered.

scholarly journals Uptake of soil P, Al, Fe, Mn, Mg and Ca by Italian rye grass (Lolium multiflorum Lam.) induced by synthetic chelating agent

1981 ◽  
Vol 53 (3) ◽  
pp. 152-160
Author(s):  
Helinä Hartikainen
Keyword(s):  
Dry Matter ◽  
Ethylenediaminetetraacetic Acid ◽  
Lolium Multiflorum ◽  
Mineral Soil ◽  
Chelating Agent ◽  
Soil Samples ◽  
Soil P ◽  
Rye Grass ◽  
Calcium Supply ◽  
The Stability

The effect of a synthetic chelating compound on the dry matter yield and the uptake of soil P, Al, Fe, Mn, Mg and Ca by Italian rye grass was studied in a pot experiment with three mineral soil samples irrigated with water or 0.001 M Na2-EDTA(dinatrium salt of ethylenediaminetetraacetic acid) solution. The Na2-EDTA treatment seemed not to affect the quantity of the dry matter yields, but it affected markedly their chemical composition. Increased contents of P, Al and Fe were found in all the harvests. In two soil samples the P supply was improved by 35—45 %. The accumulation of Al, Fe and Mn induced by Na2-EDTA tended to be the more effective the greater the stability constant for the corresponding metal-EDTA chelate was. Thus, the iron uptake increased most intensively, i.e. by 217—458 %, and that of aluminium by 33—120 %. On the basis of the first two harvests the manganese absorption by the rye grass seemed to decrease probably due to the enormous accumulation of iron. The results also suggested that the addition of Na2-EDTA to the soil was not able essentially to affect the magnesium and calcium supply to the plants.

scholarly journals Identification of Arbuscular Mychorizae Fungi on Oil Palm in Bireuen, Aceh

2021 ◽  
Vol 5 (2) ◽  
pp. 114-121
Author(s):  
Zaitun Ritaqwin Rita ◽  
Mizan Maulana ◽  
Nazalia
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Oil Palm ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Culture Method ◽  
Soil Samples ◽  
Soil Biology ◽  
National University ◽  
Maize Plants ◽  
Very High

Abstract   Oil palm plantations in Aceh , especially in Bireuen, are generally planted on red-yellow podzolic soil types. Arbuscular mycorrhizal fungi (AMF) are fungi who are symbiotically associated with 97% of plant species. This study aims to identify the type and population of mycorrhizal spores from oil palm rhizosphere soil samples using culture trapping techniques (maize, sorghum, kudzu). This research was carried out in a greenhouse and Experimental Field, Faculty of Agriculture, Islamic National University of Indonesia, Bireuen, Aceh. Isolation, identification and observation of AMF colonization on plant roots was carried out at the Laboratory of Soil Biology, Faculty of Agriculture, Syiah Kuala University. The parameters included the number of arbuscular mycorrhizal fungi spores and the percentage of root colonization using the trapping culture method. The trapping culture method used 50 g of soil samples on oil palm rhizosphere which aged 5 months, 7 years, 9 years and 12 years. The results showed that the most dominant mycorrhizae found was the Glomus type. The mycorrhizae spores types found in the trapping culture were Glomus, Acaulospora and Gigaspora. The host plant that produced the most AMF spores was sorghum, while the highest AMF colonization of the three host plants was found in the roots of maize plants (78%) with very high criteria. Keywords: Oil palm, Culture trapping, AMF  

scholarly journals Chemical Properties of Heavy Metal-Contaminated Soils from a Korean Military Shooting Range: Evaluation of Pb Sources Using Pb Isotope Ratios

2021 ◽  
Vol 11 (15) ◽  
pp. 7099
Author(s):  
Inkyeong Moon ◽  
Honghyun Kim ◽  
Sangjo Jeong ◽  
Hyungjin Choi ◽  
Jungtae Park ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Contaminated Soils ◽  
Management Strategies ◽  
Chemical Properties ◽  
Heavy Metal Concentration ◽  
Soil Samples ◽  
Shooting Range ◽  
Geochemical Properties ◽  
Mineral Phases

In this study, the geochemical properties of heavy metal-contaminated soils from a Korean military shooting range were analyzed. The chemical behavior of heavy metals was determined by analyzing the soil pH, heavy metal concentration, mineral composition, and Pb isotopes. In total, 24 soil samples were collected from a Korean military shooting range. The soil samples consist of quartz, albite, microcline, muscovite/illite, kaolinite, chlorite, and calcite. Lead minerals, such as hydrocerussite and anglesite, which are indicative of a transformation into secondary mineral phases, were not observed. All soils were strongly contaminated with Pb with minor concentrations of Cu, Ni, Cd, and Zn. Arsenic was rarely detected. The obtained results are indicated that the soils from the shooting range are contaminated with heavy metals and have evidences of different degree of anthropogenic Pb sources. This study is crucial for the evaluation of heavy metal-contaminated soils in shooting ranges and their environmental effect as well as for the establishment of management strategies for the mitigation of environmental risks.

scholarly journals Uncommon biphasic behaviour induced by very high metal ion concentrations in HCl/H2O/[P44414]Cl and HCl/H2O/PEG-600 systems

2020 ◽  
Vol 22 (40) ◽  
pp. 23226-23236
Author(s):  
Eris Sinoimeri ◽  
Victor Maia Fernandes ◽  
Jérôme Cognard ◽  
Jorge Fernando Brandão Pereira ◽  
Lenka Svecova ◽  
...  
Keyword(s):  
Metal Ion ◽  
Ion Concentrations ◽  
System P ◽  
High Metal ◽  
Very High ◽  
Peg 600

Large amounts of Fe(iii) or Fe(ii) strongly modify the biphasic behavior of the system P44414Cl/HCl/H2O while large amounts of Fe(iii) induce a biphasic regime for the mixture PEG-600/HCl/H2O.

scholarly journals Behavior of Eucalyptus grandis and E. cloeziana seedlings grown in arsenic-contaminated soil

2010 ◽  
Vol 34 (3) ◽  
pp. 985-992 ◽  
Author(s):  
Roseli Freire Melo ◽  
Luiz Eduardo Dias ◽  
Jaime Wilson Vargas de Mello ◽  
Juraci Alves Oliveira
Keyword(s):  
Root System ◽  
Plant Height ◽  
Contaminated Soil ◽  
Dry Matter ◽  
Eucalyptus Grandis ◽  
Soil Samples ◽  
Mining Activities ◽  
Polluted Soils ◽  
Interveinal Chlorosis ◽  
Apical Bud

Arsenic has been considered the most poisonous inorganic soil pollutant to living creatures. For this reason, the interest in phytoremediation species has been increasing in the last years. Particularly for the State of Minas Gerais, where areas of former mining activities are prone to the occurrence of acid drainage, the demand is great for suitable species to be used in the revegetation and "cleaning" of As-polluted areas. This study was carried out to evaluate the potential of seedlings of Eucalyptus grandis (Hill) Maiden and E. cloeziana F. Muell, for phytoremediation of As-polluted soils. Soil samples were incubated for a period of 15 days with different As (Na2HAsO4) doses (0, 50, 100, 200, and 400 mg dm-3). After 30 days of exposure the basal leaves of E. cloeziana plants exhibited purple spots with interveinal chlorosis, followed by necrosis and death of the apical bud at the 400 mg dm-3 dose. Increasing As doses in the soil reduced root and shoot dry matter, plant height and diameter in both species, although the reduction was more pronounced in E. cloeziana plants. In both species, As concentrations were highest in the root system; the highest root concentration was found in E. cloeziana plants (305.7 mg kg-1) resulting from a dose of 400 mg dm-3. The highest As accumulation was observed in E. grandis plants, which was confirmed as a species with potential for As phytoextraction, tending to accumulate As in the root system and stem.

scholarly journals Sorption of Clomazone in Brazilian Soils with Different Physical and Chemical Attributes1

2016 ◽  
Vol 34 (2) ◽  
pp. 357-364 ◽  
Author(s):  
G.A.M. PEREIRA ◽  
L.H. BARCELLOS JR. ◽  
V.A. GONÇALVES ◽  
D.V. SILVA ◽  
A.T. FARIA ◽  
...  
Keyword(s):  
Dry Matter ◽  
Organic Matter Content ◽  
Matter Content ◽  
Soil Samples ◽  
Chemical Characteristics ◽  
Abstract Knowledge ◽  
Analysis Of Similarity ◽  
Brazilian Soils ◽  
Physical And Chemical ◽  
Different Soils

ABSTRACT Knowledge of herbicides sorption by colloids predicts its movement in the soil profile and its effectiveness in controlling weeds and crops poisoning when directly applied to the soil. This knowledge becomes even more important for herbicides which have long persistence in the soil. In this research, clomazone sorption was estimated by the biological method in Brazilian soil samples with different physical and chemical characteristics, cultivated with sugarcane crops. As an indicator of the presence of clomazone in the soil, Sorghum bicolor was used. The data relating to assessments of poisoning and accumulation of dry matter of the plants were subjected to multivariate analysis of similarity among variables. After that, clomazone doses that caused 50% of intoxication in sorghum plants grown (C50) as well as sorption ratio (SR) of the herbicide in different soil types were estimated. There was similarity greater than 80% for data regarding the percentage of intoxication and accumulated dry matter, with the option to use only those related to the first variable. RS and C50 were higher in Organosol and lower in red-yellow Latosol with and without changing the pH. It was concluded that the clomazone dose to be recommended must be differentiated for different soils, since the value of clomazone sorption in the soil is dependent on its attributes, and the organic matter content is of the utmost importance.

scholarly journals Distribution of Contaminated Soils along Transversal and Longitudinal Gradients in Dynamic Fluvial Environment (Southern Québec, Canada)

2015 ◽  
Vol 8 ◽  
pp. ASWR.S22465 ◽  
Author(s):  
Diane Saint-Laurent ◽  
Francis Baril ◽  
Ilias Bazier ◽  
Vernhar Gervais-Beaulac ◽  
Camille Chapados
Keyword(s):  
Spatial Distribution ◽  
Contaminated Soils ◽  
Soil Samples ◽  
Copper Mining ◽  
Mining Sites ◽  
Mining Areas ◽  
Pb Contamination ◽  
Flood Zone ◽  
Longitudinal Gradients ◽  
Mine Sites

This research combines a hydrological and pedological approach to better understand the spatial distribution of contaminated soils along the Massawippi River (southern Québec, Canada). This river crosses through former mines, which were some of the largest copper mining areas in North America from 1865 to 1939. To determine the spatial distribution and concentration of the metal elements, soil samples were taken in each flood recurrence zone appearing on official flood zone maps. The maximum values obtained for Cu and Pb are 380 and 200 mg kg−1, respectively, for the soils in the frequent flood zones (FFzs), while the values for soils in the moderate flood zones (MFzs) range from 700 to 540 (Cu) and 580 to 460 mg kg−1 (Pb). Contamination extends through several kilometers of the former mining sites (Eustis and Capleton), and concentration of metals in alluvial soils is slightly higher near the mine sites.

scholarly journals HUMIC SUBSTANCES AND PHOSPHOROUS SOURCES IN MAIZE CROPS

Nativa ◽  
2019 ◽  
Vol 7 (4) ◽  
pp. 371
Author(s):  
Lucas Morais Lôbo ◽  
Eva De Melo Ferreira ◽  
Camilla Oliveira Muniz ◽  
Carlos Alberto Da Silva Ferreira ◽  
Eliana Paula Fernandes Brasil
Keyword(s):  
Humic Substances ◽  
Dry Matter ◽  
Dry Weight ◽  
Agronomic Efficiency ◽  
Shoot Dry Weight ◽  
P Accumulation ◽  
Phosphorus Sources ◽  
Maize Plants ◽  
Best Responses ◽  
P Sources

SUBSTÂNCIAS HÚMICAS E FONTES DE FÓSFORO NA CULTURA DO MILHO O objetivo do estudo é verificar o efeito da adição de doses de um produto comercial a base de substâncias húmicas (SH), na produção de massa seca de plantas de milho, no acúmulo de P nas plantas e a eficiência agronômica de fontes de fósforo em dois tipos de solos com diferentes capacidades de adsorção. O trabalho foi conduzido em casa de vegetação. Os tratamentos compreendem quatro doses de substâncias húmicas (0, 100, 200 e 400 kg ha-1) e duas fontes de fósforo (superfosfato triplo – SFT e fosfato natural reativo – FNR), em dois tipos de solos (Latossolo Vermelho – LV e Neossolo Quartzarênico – NQ). As fontes de P foram fornecidas em dose constante de 75 mg.dm-3 de P. Houve resposta estatisticamente significativa (P<0,05) da produção de massa seca da parte aérea (MSPA), massa seca das raízes (MSR), P acumulado na parte aérea e P acumulado nas raízes à adição de SH. No LV os parâmetros MSPA, MSR, P acumulado na parte aérea, P acumulado nas raízes e a Eficiência agronômica relativa das fontes de P aumentaram com a adição crescente de SH, obtendo os melhores resultados com uso da maior dose (400 kg ha-1). No NQ as melhores respostas foram obtidas com a adição de 100 kg ha-1 da SH. Estes resultados indicam que a utilização de substâncias húmicas é eficiente para o aumento da produção de massa seca das plantas de milho e no teor de P acumulado.Palavras-chave: P acumulado, eficiência agronômica relativa, adsorção de fósforo. ABSTRACT: The objective of this study was to verify the effect of the application of different rates of a commercial product based on humic substances (HS) on the dry matter contents, and P accumulation in maize plants and the agronomic efficiency of phosphorus sources in two soils with different adsorption capacities. The experiment was conducted in a greenhouse. The treatments consisted of four rates of humic substances (0, 100, 200, and 400 kg ha-1) and two phosphorus sources (triple superphosphate – TSP; and reactive natural phosphate – RNP) in two types of soils (Rhodic Hapludox – RH; and Typic Quartzipsamment – TQ). The response of the shoot dry weight (SDW), root dry weight (RDW), shoot accumulated P, and root accumulated P to the application of HS was statistically significant (P <0.05). In the RH, the SDW, RDW, shoot and root accumulated P, and relative agronomic efficiency of the P sources increased with increasing HS rates; thus, the best results were found with the use of the highest rate (400 kg ha-1). In the TQ, the best responses were found with the application of 100 kg ha-1 of HS. These results indicate that the use of humic substances is efficient to increase dry matter and accumulated P contents in maize plants.Keywords: accumulated P, relative agronomic efficiency, P adsorption.

Sign in / Sign up

Export Citation Format

Share Document