Australian Journal of Soil Research articles from September 2003

Australian Journal of Soil Research archives from September 2003

Field study of pesticide leaching in an allophanic soil in New Zealand. 1: experimental results.
September 1, 2003... Introduction This study is part of a nationwide approach for assessing pesticide behaviour in key New Zealand soils under different climatic conditions, and the suitability of simulation models to predict transport to depth, where there...

Field study of pesticide leaching in an allophanic soil in New Zealand. 2: comparison of simulations from four leaching models.
September 1, 2003... Introduction Computer simulation models are useful for understanding the behaviour of pesticides in the soil and groundwater. They are increasingly being used to predict the transport and fate of agrochemicals and to perform risk...

Land use effects on sorption of pesticides and their metabolites in sandy soils. I. Fenamiphos and two metabolites, fenamiphos sulfoxide and fenamiphos sulfone, and fenarimol and azinphos methyl.
September 1, 2003... Introduction In Australia and elsewhere there is growing concern about contamination of groundwater by pesticides, especially from intensive agricultural systems (Gerritse et al. 1991; Vighi and Funari 1995; Kookana et al. 1998). Several...

Land use effects on sorption of pesticides and their metabolites in sandy soils. II. Atrazine and two metabolites, deethylatrazine and deisopropylatrazine, and prometryne.
September 1, 2003... Introduction In Australia, there has been concern about contamination of groundwater by pesticides, especially from intensive agricultural systems (Gerritse et al. 1991; Kookana et al. 1994). In Western Australia, the shallow unconfined...

Acid buffering capacity and potential acidification of cotton soils in northern New South Wales.
September 1, 2003... Introduction Acidic soils are a major limitation to crop productivity in much of the world. In Australia, acid soils cover approximately 40% of the total land area. Although soil acidification is a natural process, modern agricultural...

Carbon storage in cotton soils of northern New South Wales.
September 1, 2003... Introduction Greater food security and the risk of accelerated greenhouse gas emissions are both linked to the sustainability of soil quality and its relationship to the soil C pool and dynamics. Resolving these issues requires at least...

Transformation and fixation of Zn in two polluted soils by changes of pH and organic ligands.
September 1, 2003... Introduction The concentration of Zn in soil solution (the free cation and its complexes) is largely controlled by the equilibrium that it has with the quantity of metal associated with the soil solid phase (Tiller et al. 1972a). Estimates...

A technique to assess small-scale heterogeneity of chemical properties in soil aggregates.
September 1, 2003... Introduction Current land use and soil management practices largely treat soil chemical and soil physical properties in separation. Soil chemical properties are generally assessed by measurements made on homogenised samples, ignoring the...

Effects of long-term irrigation with reclaimed water on soils of the Northern Adelaide Plains, South Australia.
September 1, 2003... Introduction Current and future generations worldwide need to be more efficient with their use of limited water resources. The reclamation and agricultural reuse of wastewater is one means of achieving this (Oster 1994; Bahri 1999). A...

Influence of soil treading on sediment and phosphorus losses in overland flow.
September 1, 2003... Introduction The loss of phosphorus (P) and sediment from land to surface waters via overland flow is a significant cause of impaired water quality. In much of New Zealand where surface water drains hard rock catchments (as opposed to...

Field swelling, shrinking, and water content change in a heavy clay soil.
September 1, 2003... A note on terminology: what is 'normal'? In this paper we shall be concerned with the swelling and shrinking of soil. Inevitably we shall come across the term 'normal', and this will cause difficulty. 'Normal' shrinkage refers to volume...

Interaction effects of clay swelling and dispersion and CaC[O.sub.3] content on saturated hydraulic conductivity.
September 1, 2003... Introduction Soils in large areas of the world are under sodic conditions. For example, over 28% of the total land area of Australia is sodic and ii is likely that over 50% of arable land has sodicity-related problems. A sodicity process...

Event erosivity factor and errors in erosion predictions by some empirical models.
September 1, 2003... Introduction Risse et al. (1993) observed that the Universal Soil Loss Equation (USLE) (Wischmeier and Smith 1965) tended to overpredict observed erosion losses when erosion losses were low and underpredict observed erosion losses when...

Identification of functional horizons to predict physical properties for soils from alluvium in Canterbury, New Zealand.
September 1, 2003... Introduction There is a rapid development of sophisticated computer models designed to help solve environmental issues such as leaching of nitrates and pesticides to groundwater, nitrous oxide emissions, and sequestration of carbon. These...