Australian Journal of Soil Research articles from September 2001

Australian Journal of Soil Research archives from September 2001

Brazilian latosols and their B horizon microstructure as long-term biotic constructs.(Statistical Data Included)
September 1, 2001... Introduction The age of the landscape and soils In 1868, after visiting Brazil, Louis Agassiz described with great astonishment the widespread presence of a clayey solum overlying a deep saprolite, commonly separated by stone-lines,...

Application of mineral magnetism to describe profile development of toposequences of a sedimentary soil in south-eastern Australia.(Statistical Data Included)
September 1, 2001... Introduction Mineral magnetic properties of soils have been increasingly studied in recent decades. Thompson and Oldfield (1986) summarised much of the earlier work and pointed to a wide range of applications. Several authors, notably...

Fractionation of cobalt and manganese in New Zealand soils.
September 1, 2001... Introduction Adequate cobalt (Co) in pasture is essential for ruminant health in New Zealand pastoral agriculture, and many New Zealand soils are known to be potentially Co-deficient (Andrews 1970). However, current soil diagnostic methods...

Carbon and phosphorus losses from dairy pasture in South Australia.
September 1, 2001... Introduction Dairying is an intensive grazing industry and in South Australia is often located on shallow texture-contrast soils. To increase pasture and milk production, managers are increasing fertiliser use, especially phosphorus (P)...

Effect of application of bauxite residue (red mud) to very sandy soils on subterranean clover yield and P response.(Statistical Data Included)
September 1, 2001... Introduction Red mud is the material that remains after crushed bauxite is treated with caustic soda to remove the alumina. The residue is pumped onto drying beds and the alkaline solution is drained away and reused to extract more alumina...

Changes in the surface charge characteristics of degraded soils in the wet tropics through the addition of beneficiated bentonite.
September 1, 2001... Introduction In their pristine state, soils of the wet tropics maintain highly productive climax rainforests that have an intrinsically tight nutrient cycling capacity. Soil organic matter (SOM) that effectively acts as a slow release...

Effects of grassland afforestation on exchangeable soil and soil solution aluminium.(Statistical Data Included)
September 1, 2001... Introduction Increasing areas of New Zealand hill and high country grasslands are being converted from pasture to exotic forestry plantations, with radiata pine (Pinus radiata) being the dominant plantation species. Sustaining this current...

Validation of the GLEAMS simulation model for estimating net nitrogen mineralisation and nitrate leaching under cropping in Canterbury, New Zealand.(Statistical Data Included)
September 1, 2001... Introduction Nitrate contamination of groundwater is a widely recognised environmental issue in Canterbury, New Zealand (Smith 1993). However, before scientists can effectively encourage the adoption of agricultural practices that minimise...

Root effects on soil carbon and nitrogen cycling in a Pinus radiata D. Don plantation on a coastal sand.
September 1, 2001... Introduction Many factors interact to control rates of soil carbon (C) and nitrogen (N) cycling in terrestrial ecosystems (e.g. Kladivko and Keeney 1987; Paul and Clark 1996). Several studies have examined the impact of above-ground inputs...

Application of VARLEACH and LEACHM models to to experimental data on leaching of a non-reactive tracer and three sulfonylurea herbicides.
September 1, 2001... Introduction Computer simulation models are useful in understanding the behaviour of agricultural chemicals in the soil and their movement into the groundwater (Khakural et al. 1995) under a range of soil and climatic conditions. They have...

Chemical reaction and Co-60 retardation in unsteady, unsaturated soil water flow: the effect of clay content.
September 1, 2001... Introduction Siting and design of low level radioactive waste repositories are influenced by the way the regolith immobilises or retards water-soluble nuclides inadvertently released from the waste. Unsaturated, unsteady, water flow...

Effects of electrolyte composition on chromium desorption in soils contaminated by tannery waste.
September 1, 2001... Introduction Tanning industries worldwide generate approximately 40 million [m.sup.3] of waste containing chromium (Cr) every year (Macchi et al. 1991). With inadequate regulatory guidelines, wastes were largely disposed on land and water...

Retention and plant availability of chromium in soils as affected by lime and organic matter amendments.
September 1, 2001... Introduction Approximately 6400 and 1600 tonnes of tannery and timber treatment effluents, respectively, are generated annually in New Zealand, and they contribute approximately 10% of the total hazardous waste (Jonathan et al. 1989)....

Surface reactivity of A horizons towards polar compounds estimated from water adsorption and water content.(Statistical Data Included)
September 1, 2001... Introduction The surface area of a soil largely resides in its clay fraction but would also include a contribution from other finely divided soil components, notably soil organic matter. Although there are many references in the soil...

Effects of rundown in soil hydraulic condition on crop productivity in south-eastern Queensland--a simulation study.(Statistical Data Included)
September 1, 2001... Introduction Traditionally, cropping systems in south-eastern Queensland use tillage for weed control, to prepare a seedbed, and to improve soil infiltration and aeration (Freebairn et al. 1986). Tillage is typically intense, breaks up the...

Evaluation of WEPP for runoff and soil loss prediction at Gunnedah, NSW, Australia.(Statistical Data Included)
September 1, 2001... Introduction There has been a worldwide trend in testing and using physically based runoff and soil erosion models at both field and watershed scales (e.g. Jetten et al. 1999). These physically based models, often with an explicit attempt...

Routine measurement of the soil water potential gradient near saturation using a pair of tube tensiometers.(Statistical Data Included)
September 1, 2001... Introduction In southern Australia the increase in groundwater recharge resulting from changed land use during the last century is well recognised as being the cause of high water tables, water-logging, and dryland salinity (Hatton and...

Cotton root growth in a compacted Vertisol (Grey Vertosol) I. Prediction using strength measurements and `limiting water ranges'.(Statistical Data Included)
September 1, 2001... Introduction Richards and Cockroft (1974) and Stepniewski (1981) studied the inter-relationships between soil strength, aeration, and water content, and referred to a range of soil water contents where none of these factors limit plant...

Cotton root growth in a compacted Vertisol (Grey Vertosol) II. Correlation with image analysis parameters.(Statistical Data Included)
September 1, 2001... Introduction Critical soil strength limits for cotton root growth have been described by Taylor et al. (1966) and Taylor and Ratliff (1969). Their information is widely used in crop simulation studies (e.g. Whisler et al. 1986). However,...

Corrigendum.(Statistical Data Included)
September 1, 2001... Vol. 39, issue 2, pp. 219-238. A comparison using the caesium-137 technique of the relative importance of cultivation and overland flow on soil erosion in a steep semi-tropical sub-catchment. A. S. Wiranatha, C. W. Rose, and M. S. Salama...