Australian Journal of Soil Research articles from January 2000

Australian Journal of Soil Research archives from January 2000

Effect of antecedent soil water regime and rice straw application time on [CH.sub.4] emission from rice cultivation.
January 1, 2000... Introduction Methane ([CH.sub.4]) is an important greenhouse gas and a key factor in tropospheric and stratospheric chemistry (Bouwman 1991). Rice fields are one of the major contributors to the increasing atmospheric [CH.sub.4]...

Effect of macropore flow on the transport of surface-applied cow urine through a soil profile.
January 1, 2000... Introduction The movement of water through macropores in soil is not a new concept, and was first documented in the 18th century (Beven and Germann 1982). However, the importance of macropores in contributing to water and solute transport...

Irrigation of an allophanic soil with dairy factory effluent for 22 years: responses of nutrient storage and soil biota.(Statistical Data Included)
January 1, 2000... Introduction In New Zealand and many other countries, land application of agricultural, industrial, and municipal effluent is being favoured over disposal in waterways (Cameron et al. 1997). However, few studies have examined the effects...

Salinity increases cadmium uptake by wheat and Swiss chard from soil amended with biosolids.(Statistical Data Included)
January 1, 2000... Introduction Land application of biosolids is a common practice in many countries to allow re-use of the increasing amounts of municipal sewage waste produced by urban populations. In Australia, with the imperative to re-use sewage wastes...

Changes in free living soil nematode and micro-arthropod communities under a canola-wheat-lupin rotation in Western Australia.(Statistical Data Included)
January 1, 2000... Introduction Break crops are vital components of the Australian wheat industry, reducing disease in following wheat crops and providing alternative sources of income through diversification of grain crops. Canola (Brassica napus L.) is...

Degradation of soil structure due to coalescence of aggregates in no-till, no-traffic beds in irrigated crops.(Statistical Data Included)
January 1, 2000... Introduction High production from crops requires good soil management so that yield is not limited by soil factors. However, soil science has far to go in developing methods of soil management that enable crops to reach potential yields...

Crop rotation effects on soil carbon and physical fertility of two Australian soils.(Statistical Data Included)
January 1, 2000... Introduction The continuous cultivation and cropping of many of the worlds soils, which previously supported native vegetation, have generally resulted in a reduction in soil carbon content and consequent destabilisation of soil structure....

Resistance to cropping pressure of two New Zealand soils with contrasting mineralogy.(Statistical Data Included)
January 1, 2000... Introduction Arable cropping can have a large impact on soil properties because, compared with long-term pastures and forests, there is frequent soil disturbance, compaction, greater use of agrochemicals and high off-takes, while organic...

Creating and testing a geometric soil-landscape model in dry steeplands using a very low sampling density.(Statistical Data Included)
January 1, 2000... Introduction Approach to soil-landscape modelling in steeplands The aim of this study was to determine whether a predictive geometric soil-landscape model could be created for 29 soil properties on seasonally dry greywacke steeplands...

Nature of organic carbon and nitrogen in physically protected organic matter of some Australian soils as revealed by solid-state [sup.13]C and [sup.15]N NMR spectroscopy.(Statistical Data Included)
January 1, 2000... Introduction As a limiting factor for plant and microbial growth, the form and chemistry of the organic soil nitrogen is closely related to biological productivity in soils. Most of the nitrogen entering soil as part of the decaying...

The distribution of net nitrogen mineralisation within surface soil. 1. Field studies under a wheat crop.(Statistical Data Included)
January 1, 2000... Introduction In Australian soils, nitrogen (N) supply to cereal crops depends on the release of N from the soil organic matter via mineralisation and supplementation from fertiliser. Nitrogen mineralisation is a biological process, the...

The relationship between soil solution pH and [Al.sup.3+] concentrations in a range of South Island (New Zealand) soils.(Statistical Data Included)
January 1, 2000... Introduction The toxicity of inorganic monomeric Al to plants and fish is well known (Cronan and Schofield 1979; Alva et al. 1986). Equally well known is the insolubility of [Al.sup.3+] at circumneutral pH (log [K.sub.s0] (gibbsite) =...

Surface area of soils of contrasting mineralogies using para-nitrophenol adsorption and its relation to air-dry moisture content of soils.(Statistical Data Included)
January 1, 2000... Introduction The reactivity of a soil towards extraneous substances is closely related to its specific surface area (SSA). For this reason, the SSA of soil is a key parameter for many soil processes. For example, the bioavailability of...

Palygorskite-cemented crusts (palycretes) in Southern Portugal.(Statistical Data Included)
January 1, 2000... Introduction Duricrusts are among the most common surface phenomena known that affected ancient and modern landscapes. Essentially, duricrusts are composed of coarse-grained mineral material cemented together by matrix materials such as...

Minimum threshold value of smectite for vertic properties.(Statistical Data Included)
January 1, 2000... Additional keywords: Mineralogy class, taxonomic rationale. Introduction It is well documented that vertic properties of soils are primarily regulated by the nature of clay minerals, particularly their surface properties (Anon. 1975,...

Particle density and the plummet balance.(Statistical Data Included)
January 1, 2000... Introduction Accurate values of the dry densities of fine fractions of particles in soils or tailings from mines could be useful indicators of both the composition and settlement rates of particles. However, separation of fractions by...

Isotopic dilution methods to determine the gross transformation rates of nitrogen, phosphorus, and sulfur in soil: a review of the theory, methodologies, and limitations.
January 1, 2000... Introduction Nutrient transformations in the soil, e.g. mineralisation and immobilisation, or release and retention, play an important role in regulating the supply of nutrients such as nitrogen (N), phosphorus (P), and sulfur (S) to...