Australian Journal of Soil Research articles from November 2005

Australian Journal of Soil Research archives from November 2005

Determining nitrous oxide emissions from subsurface measurements in grazed pasture: a field trial of alternative technology.
November 1, 2005... Introduction Agricultural soils are the principal source of nitrous oxide ([N.sub.2]O) emissions (Mosier et al. 1998a). Emissions are often measured at the surface using chambers inserted into the soil (e.g. de Klein et al. 2003). Others...

Local temperature optimum of [N.sub.2]O production rates in tropical rain forest soils of Australia.
November 1, 2005... Introduction With the ongoing discussion on climate change, not only is the topic of rising mean annual temperatures on the agenda, but also the expected modification of precipitation patterns and intensities, both having drastic...

Transport and deposition of Bacillus subtilis through an intact soil column.
November 1, 2005... Introduction Study of microbial transport through soils is of great importance in environmental, agronomic, and public health sciences. Concerns about water-borne infectious diseases have triggered research into the fate and transport of...

Hydrolysable carbohydrate in tropical soils under adjacent forest and savanna vegetation in Lamto, Cote d'Ivoire.
November 1, 2005... Introduction Carbohydrates represent 5-25% of the organic matter in soils (Cheshire 1979). Their composition and dynamics under cultivation (Dalai and Henry 1988), manure application (Appel et al. 1999; Kiem and Kogel-Knabner 2003), and...

Ultra-violet, visible, near-infrared, and mid-infrared diffuse reflectance spectroscopic techniques to predict several soil properties.
November 1, 2005... Introduction Since site-specific crop management has been introduced, there is a continuous demand for a rapid and cheaper method of soil analysis (Bouma et al. 1999). In Australia, the cost for standard soil analysis per sample is...

Effect of gypsum and polyacrylamides on water turbidity and infiltration in a sodic soil.
November 1, 2005... Introduction It has been observed that sodic soils in rice-growing areas create turbid water, and that this seriously affects the successful establishment of rice seedlings (Humphreys and Barrs 1998). Similar conditions were reported in...

Modelling velocity and retardation factor of a nonlinearly sorbing solute plume.
November 1, 2005... Introduction Only limited developments, both theoretical and experimental, have been achieved so far for quantifying the transport parameters of reactive solutes. There is need to validate the theories that explain and predict the...

Modelling phosphorus exports from rain-fed and irrigated pastures in southern Australia.
November 1, 2005... Introduction Eutrophication, the accumulation of nutrients such as nitrogen, phosphorus (P), and carbon in streams and water impoundments is a worldwide problem (Cooke et al. 1993; USEPA 1996; European Environment Agency 1998). The adverse...

Extractable iron and aluminium predict the P sorption capacity of Thai soils.
November 1, 2005... Introduction Land suitable for agriculture comprises about 52% of the total area of Thailand and most soils are phosphate (P) deficient (Vijarnsorn 2000). Reactions of soil with applied P depend to a large extent on mineralogy and texture...

Exploring pedogenesis via nuclide-based soil production rates and OSL-based bioturbation rates.(Optically stimulated luminescence )
November 1, 2005... Introduction The rate at which saprolite is altered to soil is known as soil production, and its quantification is vital to assessing sustainable erosion rates in areas where soil loss, enhanced by overgrazing and deforestation, threatens...