Australian Journal of Soil Research articles from January 2003

Australian Journal of Soil Research archives from January 2003

Soil and soil solution chemistry of a New Zealand pasture soil amended with heavy metal-containing sewage sludge.
January 1, 2003... Introduction The recycling of sewage sludge to land is an accepted agricultural practice in many countries, as the sludge is a resource, containing high concentrations of plant nutrients. However, these sludges always contain heavy metals,...

Cadmium distribution and inventories at a pre-European seabird breeding site on agricultural land, Banks Peninsula, New Zealand.
January 1, 2003... Introduction Cadmium (Cd) is a ubiquitous trace element, which can cause toxic effects in both wild and domestic animals (Larison et al. 2000). Cd concentrations in New Zealand agricultural soils average 0.44 mg/kg, more than double that...

A field study on persistence and mobility of metsulfuron-methyl in three tropical agricultural soils. (Short Communication).
January 1, 2003... Introduction Metsulfuron-methyl belongs to the sulfonylurea group of herbicides and is used for pre- and post-emergence control of a number of broadleaved and grassy weeds. It is widely used in Malaysia for the control of weeds in oil palm...

Characterisation of iron nodules in a Ultisol of central Taiwan.
January 1, 2003... Introduction Nodules typically occur in hydromorphic soils of humid temperate climates. Compared with concretions, nodules do not occur commonly in soils. Sherman and Kanehiro (1954) and Folster (1968) reported that iron nodules were...

Artificial neural network analysis of laboratory and in situ spectra for the estimation of macronutrients in soils of Lop Buri (Thailand).
January 1, 2003... Introduction Soil has both dynamic and relatively static properties varying spatially (Bouma 1997). In particular, the topmost layers of agricultural soils are very delicate and dynamic in their behavior. Soil testing, since 1940s (SPAC...

Chemical characteristics of phosphorus in alkaline soils from southern Australia.
January 1, 2003... Introduction Most Australian soils have a naturally low phosphorus (P) status compared with soils in the United States or Europe (Donald 1964). To cope with this deficiency, P-fertilisers (mainly superphosphates) have been applied for more...

The effect of soil texture and roots on the stable carbon isotope composition of soil organic carbon.
January 1, 2003... Introduction The carbon isotope composition ([[delta].sup.13]C value) of soil organic carbon (SOC) has provided information on past changes in vegetation (Dzurec et al. 1985; Pressenda et al. 1996; Schwartz et al. 1996), on the rates at...

Soil organic matter as influenced by straw management practices and inclusion of grass and clover seed crops in cereal rotations.
January 1, 2003... Introduction In New Zealand, most arable crops have been grown as part of a mixed farming system consisting of 2-5 years of arable cropping followed by 2-5 years of grazed ryegrass/clover pasture (Haynes and Francis 1990). The length of...

Organic carbon and soil porosity.
January 1, 2003... Introduction McGarry et al. (1996) took cores from a sodic Hydrosol (Isbell 1996) or Natraqualf (Soil Survey Staff 1994) under native trees and an adjoining canefield. The soil was sandy to about 0.35 m, after which clay content gradually...

Subsoil nitrogen mineralisation and its potential to contribute to N[H.sub.4] accumulation in a Vertosol.(ammonium)
January 1, 2003... Introduction In a Vertosol soil in south-east Queensland, high concentrations of exchangeable ammonium (N[H.sub.4.sup.+]) have been observed at depths below 1.2 m. Between 1.2 and 3 m, total amounts of N[H.sub.4]-N in the order of 200-270...

Sediment yields and soil loss rates from different land uses on Triassic shales in western Sydney, NSW.(New South Wales)
January 1, 2003... Introduction Soil erosion is one of the most significant forms of land degradation in Australia and is greatly influenced by land use and management as well as climate and soil erodibility (Woods 1984; Edwards 1991; Erskine and Saynor...

An improved Victorian erosivity map.
January 1, 2003... Introduction Soil erosion by rainfall-driven processes is known to be related to the erosive potential, or the erosivity, of rainfall (Wischmeier and Smith 1958). Erosivity is commonly quantified using the R factor developed for the...

The effect of a gap between the access tube and the soil during neutron probe measurements.
January 1, 2003... Introduction The neutron scattering method is widely used for measuring the water content along a soil profile, and its change over time. A neutron moisture gauge consists of a source of fast (high-energy) neutrons, a thermal neutron...