Assessment of soil diuron bioavailability to plants and microorganisms through non-exhaustive chemical extractions of the herbicide

Geoderma ◽  
2018 ◽  
Vol 312 ◽  
pp. 130-138 ◽  
Author(s):  
M. Rubio-Bellido ◽  
E. Morillo ◽  
J. Villaverde
Keyword(s):  
Chemical Extractions

scholarly journals Characteristics of Interlayer Materials in Non-Allophanic Volcanic Ash and Red Yellow Soils from Japan

2005 ◽  
Vol 5 (1) ◽  
pp. 1-23
Author(s):  
Anabella Tulin ◽  
Keyword(s):  
Iron Oxides ◽  
Volcanic Ash ◽  
Sodium Citrate ◽  
Citrate Solution ◽  
X Ray Diffraction ◽  
X Ray ◽  
Chemical Extractions ◽  
Oxalate Solution

The characteristics and properties of interlayer materials from 10 non-allophanic (Melanudand) and red yellow soils (Alfisols and Ultisols) from three locations in Japan were studied by chemical extractions and x-ray diffraction (XRD) analyses. Allophane was dissolved from clay samples using 0.15 M acid oxalate solution while silicon and aluminum were dissolved using both 0.15 M acid oxalate and 0.3 M sodium citrate solutions. XRD analyses were done for the treated and untreated samples. For the chemically extracted samples, the clay samples were treated with bicarbonate citrate solution for the removal of iron oxides after the dissolution treatments then saturated with K and Mg ions for XRD analyses. Results of the XRD patternd of the untreated and treated samples indicated the interlayer materials as a hydroxy-interlayered form for vermiculite (HIV). Between the two dissolution treatments, the 0.3 M sodium citrate treatment was found to be more effective in removing the interlayer materials than the 0.15 M acid oxalate treatment by allowing interlayer expansion and collapse.

Characterization of soil phosphorus in a fire-affected forest Cambisol by chemical extractions and 31P-NMR spectroscopy analysis

2010 ◽  
Vol 408 (16) ◽  
pp. 3342-3348 ◽  
Author(s):  
María-Belén Turrion ◽  
Francisco Lafuente ◽  
María-José Aroca ◽  
Olga López ◽  
Rafael Mulas ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
31P Nmr ◽  
Soil Phosphorus ◽  
31P Nmr Spectroscopy ◽  
Spectroscopy Analysis ◽  
Chemical Extractions

scholarly journals Ecosystem type effects on the stabilization of organic matter in soils: Combining size fractionation with sequential chemical extractions

Geoderma ◽  
2019 ◽  
Vol 353 ◽  
pp. 423-434 ◽  
Author(s):  
Beatrice Giannetta ◽  
César Plaza ◽  
Claudio Zaccone ◽  
Costantino Vischetti ◽  
Pere Rovira
Keyword(s):  
Organic Matter ◽  
Size Fractionation ◽  
Chemical Extractions

The use of chemical extractions and continuous cropping to measure the potassium status of soils

1978 ◽  
Vol 29 (6) ◽  
pp. 1247 ◽  
Author(s):  
AM Graley
Keyword(s):  
Nitric Acid ◽  
Critical Level ◽  
Potassium Uptake ◽  
Continuous Cropping ◽  
Exchangeable Potassium ◽  
Soil Potassium ◽  
Chemical Extractions ◽  
Plant Yields ◽  
Yield Responses ◽  
Soil Groups

Soil potassium, measured by simple chemical extractions, was compared with potassium availability assessed during continuous cropping of perennial ryegrass in pots, on 12 surface soils representing four Tasmanian soil groups. For three soil groups with mainly kaolinitic clay, potassium uptake by the plant (the main measure of potassium availability) was related to a decrease in the potassium extracted from the soil by boiling lM nitric acid during the experiment. The decrease in soil potassium extracted by repeated nitric acid digestions averaged 95% of the total potassium uptake. However, a large and rapid uptake from the illitic yellow podzolics was only partly assessable by chemical extractions. For all soils, much of the large amount of potassium taken up early was stored in the plant roots and transferred to the tops much later. Plant yields were related to exchangeable potassium only within soil groups; over most soils they were related to nitric acid-soluble potassium. Yield responses to added potassium usually occurred when exchangeable potassium became depleted to a critical level of 0.2–0.25 m-equiv./100 g or nitric acid-soluble potassium to 0.4–0.7 m-equiv./100 g. The critical level of potassium in ryegrass tops was 0.5–0.8%. On average nearly two-thirds of the potassium released from soils came from exchangeable sources. Potassium initially non-exchangeable was differentiated into quickly released 'intermediate' potassium and slowly released 'constant rate' potassium. Release of intermediate potassium predominated from the yellow podzolics and from one non-calcic brown soil with much randomly interstratified material in its clay.

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