Australian Journal of Soil Research articles from November 2003

Australian Journal of Soil Research archives from November 2003

ASRIS: the database.
November 1, 2003... Introduction Knowledge about soils and their behaviour is critical for effective management of natural resources at landscape and ecosystem scales to meet the twin goals of sustainable production and environmental protection. Such data are...

Predicting sheetwash and rill erosion over the Australian continent.
November 1, 2003... Introduction Soil erosion is a natural process that contributes to the evolution of the land surface. It is governed by topography, climate, soil, vegetation cover, and land use and management factors through mechanisms including particle...

A comparison of rubber-tyred and steel-tracked skidders on forest soil physical properties.
November 1, 2003... Introduction Considerable research has been undertaken on the effects of harvesting machinery on the physical properties of forest soils. It is generally agreed that the movement of forest machinery has several negative impacts on soil...

Prediction of hydraulic conductivity for some Australian soils.
November 1, 2003... Introduction Soil hydraulic conductivity is an important property in processes involving water and solute flow in soils. Mathematical models describing these processes are increasingly being used for field applications and study of water...

Size distributions and minimum Stokes diameters of soil particles.
November 1, 2003... Introduction There is particular interest today in the very fine clay particles in soils because of their potential to sorb and then transport contaminants. Coincidentally, instruments using dynamic light scattering, for example, are now...

Simultaneous estimation of several soil properties by ultra-violet, visible, and near-infrared reflectance spectroscopy.
November 1, 2003... Introduction Soil is a non-ideal system, and is chemically and mineralogically more complex than the 'pure' systems often studied using traditional laboratory procedures. Mechanisms of soil processes are difficult to fully understand and...

Age of loess deposits in the Central Tablelands of New South Wales.
November 1, 2003... Introduction Loess-like deposits have been identified in southern Australia since the 1940s (Crocker 1946) but have been differentiated from classical loess because of their high clay content, and consequently were termed parna to...

Influence of changed management of sugarcane on some soil chemical properties in the humid wet tropics of north Queensland.
November 1, 2003... Introduction Within the Australian sugar industry, there has been a progressive move away from the burning of sugarcane before harvest to green cane trash blanketing (GCTB), where crop residues after harvesting are left on the soil surface...

Nitrate retention under sugarcane in wet tropical Queensland deep soil profiles.
November 1, 2003... Introduction The environmental health concerns of the Great Barrier Reef have been associated with nutrients (especially N and P) and sediment loading from cropping and other land uses (Yellowlees 1991). The Great Barrier Reef is a United...

Microbial and chemical tracer movement through two Southland soils, New Zealand.
November 1, 2003... Introduction Over recent years there has been a large increase in dairy farming in Southland, New Zealand, and in the associated land disposal of dairy shed and dairy factory effluent. Southland is a relatively new and successful dairying...

Effect of soil type, exchangeable sodium percentage, water content, and organic amendments on urea hydrolysis in some tropical Indian soils.
November 1, 2003... Introduction Urea is the most affordable source of nitrogen among solid nitrogenous fertilisers. Urea consumption during the last 3 decades has increased tremendously in developing countries. In India, more than 80% of nitrogen is consumed...

Ammonium oxidation kinetics in the presence of nitrification inhibitors DCD and DMPP at various temperatures.(Short Communication)
November 1, 2003... Introduction Nitrification inhibitors are compounds that delay bacterial oxidation of the ammonium ion (N[H.sub.4.sup.+]), by reducing the activity of the edaphic Nitrosomona spp. bacteria (Trenkel 1997). A host of chemical material, both...

Soil testing for phosphorus: comparing the Mehlich 3 and Colwell procedures for soils of south-western Australia.
November 1, 2003... Introduction When first cleared for agriculture, most soils of south-western Australia were acutely deficient in phosphorus (Wild 1958; McArthur 1991). Regular applications of superphosphate and ammonium phosphate fertilisers have been...

A laboratory study of phosphorus mobilisation from commercial fertilizers.
November 1, 2003... Introduction Nutrient enrichment of surface waters contributes to the increasing incidence of cyanobacteria blooms, as well as other less noxious algal species in south-eastern Australia (Environment Protection Authority 1995). The...

A slowly soluble, sulfur fertiliser from a by-product of mineral sands processing.
November 1, 2003... Introduction Fertiliser practices in Europe have been identified as an important factor contributing to the contamination of ground water with nitrates. A shortage of sulfur (S) lowers the utilisation of applied nitrogen (N) fertiliser...

Effect of soil amendment with bauxite Bayer process residue (red mud) on the availability of phosphorus in very sandy soils.
November 1, 2003... Introduction Four alumina refineries in Western Australia (WA) produce ~15 million tonnes of residue per year (Summers 1994) as a by-product. Bauxite ore is mined and crushed before going through the Bayer process. This involves 4 steps:...