Australian Journal of Soil Research articles from November 1998

Australian Journal of Soil Research archives from November 1998

Soil carbon changes resulting from sugarcane trash management at two locations in Queensland, Australia, and in North-East Brazil.
November 1, 1998... Introduction Sugarcane production is a major agricultural enterprise on the tropical coast of Queensland, Australia, and in Brazil. In both countries, the sugar industry was established by opening up land which was under forest or natural...

Effects of time and temperature on the sorption of cadmium, zinc, cobalt, and nickel by a soil.
November 1, 1998... Introduction One of the important characteristics determining the supply of ions to plants is the extent to which the ions continue to react with the soil so that fertilisers become less effective through time, and pollutants become less...

Geomorphic controls on aluminium in acid soils of the Axe Creek catchment, Victoria.
November 1, 1998... Introduction Acid soils can affect plant growth in several ways. Among the most important is the increase in plant-available aluminium (Al) (Jarvis 1987; Lee 1988; Thomas 1988) caused by the dissolution of clay minerals and oxides of Al....

Nitrate leaching from a drained, sheep-grazed pasture. II. Modelling nitrate leaching losses(*).
November 1, 1998... Introduction Mineral nitrogen (N) concentrations ([MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] and [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII]) in field soils consistently demonstrate pronounced spatial and temporal...

Chemical losses off dairy catchments located on a texture-contrast soil: carbon, phosphorus, sulfur, and other chemicals.
November 1, 1998... Introduction Dairying is an intensive grazing industry and in southern Australia is often located on texture-contrast soils. To increase pasture and milk production, managers are increasing fertiliser use, especially phosphorus (P)...

Procedures for characterising denitrification rates in a wastewater-irrigated forest soil.
November 1, 1998... Introduction Annual denitrification rates are often calculated by integrating fluxes of gaseous denitrification products with time. Quantifying annual denitrification losses therefore requires a sampling strategy which accounts for the...

Proteoid root mats bind surface materials in Hawkesbury Sandstone biomantles.
November 1, 1998... Introduction The sandy topsoils derived from Hawkesbury Sandstone are usually considered to be prone to severe sheet erosion following bushfire, with predicted yields of up to 48 t of sediment per hectare (Atkinson 1984). Although...

Effects of time and temperature on the sorption of cadmium, zinc, cobalt, and nickel by a soil.
November 1, 1998... Several levels of cadmium (Cd), zinc (Zn), nickel (Ni), or cobalt (Co) were added to samples of a soil as solutions of nitrate salts. The samples were incubated at about field capacity for up to 30 days at differing temperatures and the...

Geomorphic controls on aluminium in acid soils of the Axe Creek catchment, Victoria.
November 1, 1998... This study investigates the influence of terrain, including steepness and position in slope, on soil pH, extractable aluminium (Al), and organic carbon (OC) in the Axe Creek catchment, Victoria. Both soil pH and Al were determined by use of 1:5...

Chemical losses off dairy catchments located on a texture-contrast soil: carbon, phosphorus, sulfur, and other chemicals.
November 1, 1998... Runoff (overland flow and A/B horizon interflow) from 2 grazed dairy pastures at Flaxley, South Australia, accounted for [is less than] 15% of April-October rainfall in 1996; 88-96% of runoff was overland flow. A range of chemicals,...

Changes in dispersible clay content, organic carbon content, and electrolyte composition following incubation of sodic soil.
November 1, 1998... Introduction The tendency of clay to disperse is an important property of soil, and it has been suggested that values of dispersible clay should be collected routinely for assessing the impact of new management practices on soil properties...

Enhancement of soil nutrients around nest entrances of the funnel ant Aphaenogaster barbigula (Myrmicinae) in semi-arid eastern Australia.
November 1, 1998... Introduction Ants are probably the most conspicuous macro-invertebrates in arid and semi-arid rangelands because of their size and diversity. Through their foraging and seed harvesting activities, ants are active redistributors of organic...

Proteoid root mats stabilise Hawkesbury Sandstone biomantles following fire.
November 1, 1998... Introduction The proteoid roots of Banksia serrata L. f. form a dense root mat which can be thought of as an organic form of geotextile. Previous research on a Hawkesbury Sandstone hillslope revealed that, on average, B. serrata L. f. are...

Soil erodibility ([K.sub.m]) values for some Australian soils.
November 1, 1998... Introduction The need for erodibility information Soil erosion modelling has not been widely used as a management tool in Australian agriculture. In part, this is due to a lack of legislative requirements for erosion assessment and for...

Change in soil infiltration associated with leys in south-eastern Queensland.
November 1, 1998... Introduction Cropping to summer and winter grain and forage crops in south-eastern Queensland frequently involves tillage to control weeds and prepare soil for planting. These cropping practices have been found to degrade soil structural...

Effects of spent mushroom substrate on soil physical conditions and plant growth in an intensive horticultural system.
November 1, 1998... Introduction Spent mushroom substrate (SMS) is a by-product of the mushroom industry and, in New Zealand, is generally made from cereal straw, chicken litter, peat, gypsum, and chalk (Stewart et al. 1998a). Approximately 60000 t of SMS is...

Effects of humic and fulvic acids on the rhizotoxicity of lanthanum and aluminium to corn.
November 1, 1998... Introduction Aluminium (Al) and the rare earth element (REE) lanthanum (La), both trivalent cations, have been shown to be highly toxic to plants. Brady et al. (1990) showed that 2 [micro]M Al in solution caused significant reductions in...

Mineralisation of low concentrations of organic compounds and microbial biomass in surface and vadose zone soils from the Swan Coastal Plain, Western Australia.
November 1, 1998... Introduction Pesticides and other organic compounds are regularly applied to soil surfaces, either purposefully or through accidental release. In a survey in 1990 for pesticide residues of US groundwater, 10.5% of community water supplies...