Zinc, copper, and nickel availabilities as determined by soil solution and DTPA extraction of a sludge‐amended soil

1989 ◽  
Vol 20 (1-2) ◽  
pp. 139-158 ◽  
Author(s):  
J. F. Adams ◽  
D. E. Kissel
Keyword(s):  
Soil Solution ◽  
Dtpa Extraction ◽  
Amended Soil

Salinity increases cadmium uptake by wheat and Swiss chard from soil amended with biosolids

Soil Research ◽  
2000 ◽  
Vol 38 (1) ◽  
pp. 37 ◽  
Author(s):  
K. Weggler-Beaton ◽  
M. J. McLaughlin ◽  
R. D. Graham
Keyword(s):  
Triticum Aestivum ◽  
Computer Program ◽  
Soil Solution ◽  
Soil Salinity ◽  
Nacl Solution ◽  
Cd Uptake ◽  
Major Cations ◽  
Swiss Chard ◽  
Plant Shoots ◽  
Amended Soil

Soil salinity has been shown to significantly increase cadmium (Cd) concentrations in crops grown on soils fertilised with phosphatic fertilisers containing Cd. However, the effect of soil salinity on plant availability of Cd derived from biosolids is unknown. This paper reports the influence of increasing chloride (Cl) (NaCl) concentrations in soil solution on the phytoavailability of Cd in soils amended with biosolids (equivalent to 50 t/ha). Wheat (Triticum aestivum cv. Halberd) and Swiss chard (Beta vulgaris cv. Foodhook Giant) were grown in biosolids-amended soil and watered daily with a dilute NaCl solution (0–27.4 mМ). After 30 days, plant shoots were analysed for Cd and soil solution was displaced. Major cations and anions in soil solution were determined and Cd speciation was calculated with the computer program GEOCHEM-PC. Cadmium concentrations in soil solution and shoots of wheat and Swiss chard plants increased linearly with increasing Cl concentration in soil solution of the biosolids-amended soil. The activity of CdCl+ species correlated best with the Cd uptake of both plant species. Increases in shoot Cd concentrations were unrelated or only weakly correlated to the activity of the free Cd2+ ion in solution. It was concluded that chloro-complexation of Cd increased the phytoavailability of Cd in biosolids-amended soil.

LONG-TERM INFLUENCE OF SOIL AMENDMENTS ON GERMINATION OF CONIDIA

1964 ◽  
Vol 10 (4) ◽  
pp. 605-612 ◽  
Author(s):  
G. J. Griffin
Keyword(s):  
Soil Solution ◽  
Sucrose Solution ◽  
Inorganic Nitrogen ◽  
Soil Amendments ◽  
Aqueous Extracts ◽  
Soil Extracts ◽  
Carbon And Nitrogen ◽  
Fungistatic Activity ◽  
Amended Soil

Washed conidia of Gliocladium fimbriatum and Fusarium solani f. phaseoli required a carbon and nitrogen source for complete germination. Filtered aqueous extracts and membrane-expressed soil solution supported germination of washed conidia of both fungi, but germination of G. fimbriatum was completely inhibited in non-filtered aqueous soil extracts and on soil–cellophane–agar plates, whereas conidia of F. solani f. phaseoli germinated readily in both instances.The long-term influence of certain soil amendments on the capacity of the soil solution to support germination of conidia was investigated. Inhibition of germination of conidia of F. solani f. phaseoli and G. fimbriatum in filtered aqueous extracts of cellulose-amended soil with a C/N ratio higher than 25/1 and barley-amended (C/N ratio, 55/1) soil was overcome by the addition of 5 p.p.m. nitrate nitrogen to the soil during extraction. Chemical analysis of cellulose-amended (C/N ratio, ∞) soil indicated that most of the inorganic nitrogen had been immobilized. Germination in aqueous extracts of soybean- (C/N ratio, 7/1) and alfalfa-amended (C/N ratio, 18/1) soil or non-amended soil was not inhibited. Germination of F. solani f. phaseoli conidia added directly to cellulose-amended (C/N ratio, ∞) soil in 2% sucrose solution was also inhibited, whereas conidia added in 2% sucrose to non-amended soil germinated readily. Cellulose-amended (C/N/P ratio, 25/1/0.1) soil was the only soil that consistently demonstrated fungistatic activity to germination of conidia of F. solani f. phaseoli on soil–cellophane–agar plates. Membrane expressed soil solutions of the cellulose-amended soil, however, did not demonstrate fungistatic activity to germination of conidia.

scholarly journals   Assessment of single extraction methods for evaluating the immobilization effect of amendments on cadmium in contaminated acidic paddy soil

2012 ◽  
Vol 58 (No. 2) ◽  
pp. 98-103 ◽  
Author(s):  
Q.H. Zhu ◽  
D.Y. Huang ◽  
S.L. Liu ◽  
Z.C. Luo ◽  
H.H. Zhu ◽  
...  
Keyword(s):  
Correlation Analysis ◽  
Paddy Soil ◽  
Extraction Procedure ◽  
Extraction Methods ◽  
Simple Correlation ◽  
Single Extraction ◽  
Extraction Procedures ◽  
Dtpa Extraction ◽  
Amended Soil

Various single extractants (EDTA, DTPA, CaCl<sub>2</sub>, NaNO<sub>3</sub> and NH<sub>4</sub>NO<sub>3</sub>) and the first step of Community Bureau of Reference (BCR1) method were used to evaluate the immobilization of Cd in contaminated acidic paddy soil by different amendments. The extractability of Cd in amended soil changed in the following order: EDTA &asymp; BCR1 &gt; DTPA &gt; NH<sub>4</sub>NO<sub>3</sub> &asymp; CaCl<sub>2</sub> &gt; NaNO<sub>3</sub>. A simple correlation analysis indicated that the BCR1, CaCl<sub>2</sub>, NH<sub>4</sub>NO<sub>3</sub>, and NaNO<sub>3</sub> methods are the best suited methods for predicting changes in the phytoavailability to rice of Cd in soil (r = 0.680 to 0.828, P &lt; 0.001), followed by the DTPA extraction procedure (r = 0.543 to 0.666, P &lt; 0.01). However, non-significant correlations were observed between soil EDTA-extractable Cd and Cd accumulated in rice. Accordingly, the BCR1, CaCl<sub>2</sub>, NH<sub>4</sub>NO<sub>3</sub>, and NaNO<sub>3</sub> extraction procedures are recommended for evaluating the immobilization of Cd in contaminated acidic paddy soil. &nbsp;

Phytostabilization Ability and Growth Response of Calotropis procera and Lantana camara towards Tannery Amended Soil

2019 ◽  
Vol 35 (2) ◽  
pp. 215-224
Author(s):  
Poonam Rani ◽  
◽  
Adarsh Kumar ◽  
Ramesh Chandra Arya ◽  
◽  
...  
Keyword(s):  
Growth Response ◽  
Lantana Camara ◽  
Calotropis Procera ◽  
Amended Soil

SOIL WATER CONTENT AFFECTS THE AVAILABILITY OF PHOSPHATE

1985 ◽  
pp. 185-189
Author(s):  
M.C.H.Mouat Pieter Nes
Keyword(s):  
Water Content ◽  
Soil Water ◽  
Soil Water Content ◽  
Soil Solution ◽  
Equivalent Reduction

Reduction in water content of a soil increased the concentration of ammonium and nitrate in solution, but had no effect on the concentration of phosphate. The corresponding reduction in the quantity of phosphate in solution caused an equivalent reduction in the response of ryegrass to applied phosphate. Keywords: soil solution, soil water content, phosphate, ryegrass, nutrition.

Sign in / Sign up

Export Citation Format

Share Document