Correlation of Absolute 238U Bioavailability (238U-ABA) and 238U Bioaccessibility Fraction (238U-BAF) Using IAEA-312 Standard Reference Soil

2020 ◽  
Author(s):  
N. Rashid ◽  
N. Rodzi ◽  
K. Siong ◽  
W. Um
Keyword(s):  
Reference Soil

EXTRACTION OF BORON FROM CSSC REFERENCE SOILS BY HOT WATER, DILUTE CaCl2 AND MANNITOL-CaCl2 SOLUTIONS

1986 ◽  
Vol 66 (2) ◽  
pp. 377-381 ◽  
Author(s):  
P. A. SCHUPPLI
Keyword(s):  
Key Words ◽  
Soil Samples ◽  
Water Soluble ◽  
Hot Water ◽  
Distilled Water ◽  
Background Color ◽  
Color Development ◽  
Reference Soil ◽  
Highly Correlated

Soils were extracted by hot water, dilute CaCl2, and by mannitol-CaCl2 solutions and boron was determined by either azomethine-H or the curcumin method. Results were strongly method dependent; in particular results by the simplest method, mannitol-CaCl2, were generally lower and not highly correlated (r = 0.64) with those by the recommended procedure. This procedure involves extraction with hot distilled H2O (2:1 solution:soil), centrifugation, filtration, color development with azomethine-H and correction for background color. Extractable boron values by this procedure ranged from 0.1 to 1.4 mg kg−1. Background color can be further reduced by the substitution of 0.02 M CaCl2 for distilled water. Key words: CSSC reference soil samples, hot-water-soluble boron

A gamma-ray spectrometry approach to field separation of illuviation-type WRB reference soil groups in northern Thailand

2010 ◽  
Vol 174 (4) ◽  
pp. 536-544 ◽  
Author(s):  
Ulrich Schuler ◽  
Petra Erbe ◽  
Mehdi Zarei ◽  
Wanida Rangubpit ◽  
Adichat Surinkum ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Gamma Ray Spectrometry ◽  
Northern Thailand ◽  
Reference Soil ◽  
Field Separation ◽  
Soil Groups

TOTAL FLUORINE IN CSSC REFERENCE SOIL SAMPLES

1985 ◽  
Vol 65 (3) ◽  
pp. 605-607 ◽  
Author(s):  
P. A. SCHUPPLI
Keyword(s):  
Nitric Acid ◽  
Acid Solution ◽  
Key Words ◽  
Nitric Acid Solution ◽  
Soil Samples ◽  
Solution Technique ◽  
Reference Soil ◽  
Lithium Metaborate ◽  
Canadian Soils ◽  
Fluoride Electrode

Total fluorine was measured in a variety of Canadian soils using the lithium metaborate-nitric acid solution technique in conjunction with the fluoride electrode. Total fluorine ranged from 90 to 1000 mg∙kg−1. Key words: Soil fluorine analysis, fluoride electrode, CSSC reference soil samples

Bridal Creeper (Asparagus asparagoides)–Invaded Sites with Elevated Levels of Available Soil Nutrients: Barrier to Restoration?

2011 ◽  
Vol 4 (2) ◽  
pp. 212-222 ◽  
Author(s):  
Peter J. Turner ◽  
John K. Scott ◽  
Helen Spafford
Keyword(s):  
Native Species ◽  
Soil Nutrient ◽  
Soil Conditions ◽  
Nutrient Levels ◽  
Reference Soil ◽  
Native Shrubs ◽  
Exotic Grass ◽  
Environmental Weed ◽  
Invasive Exotic ◽  
The Impact

AbstractBridal creeper has become a serious environmental weed in southern Australia. Historically the invaded areas had low soil nutrient levels. However, our field surveys indicate that soils in bridal creeper–invaded areas have higher phosphorus and iron levels than soils in nearby native reference areas regardless of the proximity to agriculture or other disturbances. A glasshouse experiment was undertaken to determine the influence of increased nutrients on plants that co-occur with bridal creeper in order to (1) assess the impact of changed soil conditions and (2) predict the response of dominant species following the biological control of bridal creeper. The relative growth rate (RGR) of bridal creeper, two native shrubs (narrow-leaved thomasia [Thomasia angustifolia] and bluebell creeper [Billardiera heterophylla]), and an invasive exotic grass (annual veldt grass [Ehrharta longiflora]) were determined in three soil types: soil collected within a bridal creeper stand, soil collected from a nearby reference area, and a potting mix with nutrient levels higher than that recorded in the field. The plant species were chosen due to their association with bridal creeper. For example, the native species narrow-leaved thomasia was identified in a previous survey as the most abundant shrub at the invaded site where the soil was collected. The two other species, bluebell creeper and annual veldt grass, were identified from a previous seedbank trial as being abundant (in the seedbank) and able to readily germinate in invaded areas. When grown in either the bridal creeper–invaded soil or reference soil, bluebell creeper had significantly lower RGRs than narrow-leaved thomasia and annual veldt grass. However, as all these species showed increases in RGRs between reference soil and bridal creeper soil, this study indicates that for at least these three species the impact of increased nutrients may not be a barrier to the recovery of invaded areas following the control of bridal creeper.

Comparing data mining and deterministic pedology to assess the frequency of WRB reference soil groups in the legend of small scale maps

Geoderma ◽  
2015 ◽  
Vol 237-238 ◽  
pp. 237-245 ◽  
Author(s):  
Romina Lorenzetti ◽  
Roberto Barbetti ◽  
Maria Fantappiè ◽  
Giovanni L'Abate ◽  
Edoardo A.C. Costantini
Keyword(s):  
Data Mining ◽  
Small Scale ◽  
Reference Soil ◽  
Soil Groups

Deriving World Reference Base Reference Soil Groups from the prospective Global Soil Map product — A case study on major soil types of Africa

Geoderma ◽  
2016 ◽  
Vol 263 ◽  
pp. 226-233 ◽  
Author(s):  
Vince Láng ◽  
Márta Fuchs ◽  
Tamás Szegi ◽  
Ádám Csorba ◽  
Erika Michéli
Keyword(s):  
Soil Types ◽  
Reference Base ◽  
Soil Map ◽  
Reference Soil ◽  
Global Soil ◽  
World Reference Base ◽  
Base Reference ◽  
Soil Groups
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